Power Plant Engineering Review

1
PPE / IPE
FINAL COACHING
2
A vertical turbine pump with the jump and motor
closed coupled and design to be installed
underground, as in the case of a deepwell pump.
A. Horizontal split case pump
B. Booster pump
C. Submersible pump
D. Vertical shaft turbines pump
3
Water which is available from well, driven into
water bearing subsurface strata (aquifer)
A. Aquifer
B. Ground water
C. Wet pit
D. Well water
4
Imparts velocity to the liquid, resulting from
centrifugal force as the impeller is rotated.
A. Impeller
B. Stuffing box
C. Casing
D. Shaft sleeve
5
A means of throttling the leakage which would
otherwise occur at the point of entry of the
shaft into the casing.
A. Impeller
B. Stuffing box
C. Casing
D. Shaft sleeve
6
Protect the shaft where it passes through the
stuffing box.
A. Impeller
B. Stuffing box
C. Casing
D. Shaft sleeve
7
The ratio of the actual vapor density to the
vapor density at saturation
A. Relative humidity
B. Absolute humidity
C. Humidity ratio
D. Saturation ratio
8
An expression of the mass of water vapor per unit
mass of dry air
A. Relative humidity
B. Absolute humidity
C. Humidity ratio
D. Saturation ratio
9
The bypass factor for large commercial units
A. Around 20
B. Around 30
C. Around 10
D. Around 50
10
For any given barometric pressure, the humidity
ratio is a function of the
A. Critical temperature
B. Dew point temperature
C. Dry bulb temperature
D. Wet bulb temperature
11
The fluid pressure difference created by column
of heated gas, as by chimney is called
A. Natural draft
B. Forced draft
C. Induce draft
D. Required draft
12
The humidity ratio corresponding to any given dew
point temperature varies with the total
barometric pressure, increasing as the barometric
pressure
A. Increases
B. Decreases
C. Varies
D. Constant
13
A closed channel excavated through an
obstructiuon such as a ridge of higher land
between the dam and the powerhouse is called
A. Canal
B. Headrace
C. Penstock
D. Tunnel
14
The small reservoir in which the water level
rises or falls to reduce the pressure swings so
that they are not transmitted to the closed
conduit is called
A. Penstock
B. Power reservoir
C. Pressure tank
D. Tunnel
15
A structure used to relieve the reservoir of
excess water
A. Spillway
B. Diversion channel
C. Butress dam
D. Arch dam
16
The pressure rise from greater to a lesser
vacuum, created in a gas loop between stream
generator outlet and chimney by means of a fan is
called
A. Forced draft
B. Induced draft
C. Required draft
D. Balanced draft
17
A timber, concrete or masonry enclosure having a
screened inlet kept partially filled with water
by an open body of water such as pond, lake, or
steams.
A. Aquifer
B. Ground water
C. Wet pit
D. Well water
18
Also known as Francis turbines or radial flow
turbines
A. Impulse turbines
B. Tangential turbines
C. Reaction turbines
D. Axial flow turbines
19
Sometimes called specific humidity
A. Relative humidity
B. Absolute humidity
C. Humidity ratio
D. Saturation ratio
20
The turbine, draft tube and all related parts
comprise what is known as
A. Powerhouse
B. Forbay
C. Setting
D. Surge chamber
21
When a forbay is not part of the generating
plants design, it will be desirable to provide a
_________ in order to relieve the effects of
rapid changes in flowrate.
A. Forbay
B. Draft tube
C. Surge chamber
D. Penstock
22
The minimum fluid energy required at the pump
inlet for satisfactory operation is known as
A. NPSHR
B. NPSHA.
C. Velocity head
D. Friction head
23
To keep the deflected jet out of the way of the
incoming jet, the actual angle is limited to
approximately
A. 90 deg.
B. 135 deg.
C. 165 deg.
D. 175 deg.
24
Throttling the input line to a pump and venting
or evacuating the receiving tank
A. Both increase cavitation
B. Both decrease cavitation
C. Both eliminate cavitation
D. Both drive cavitation
25
An underground formation that contains sufficient
saturated permeable material to yield significant
quantities of water.
A. Aquifer
B. Ground water
C. Wet pit
D. Well water
26
An adiabatic saturation process is also known as
A. Constant WB temperature process
B. Constant DB temperature process
C. Constant DP temperature process
D. Constant vapor temperature process
27
The process of simultaneous heating and
dehumidifying is known as
A. Sensible heating
B. Cooling and dehumidifying
C. Sensible cooling
D. Chemical dehumidifying
28
The process in increasing the dry-bulb
temperature without changing the humidity ratio
is known as
A. Sensible heating
B. Cooling and dehumidifying
C. Sensible cooling
D. Heating and dehumidifying
29
Traditional reciprocating pumps with pistons and
rods can be either single-acting or double acting
and are suitable up to approximately
A. 2000 psi
B. 4000 psi
C. 8000 psi
D. 10,000 psi
30
Which of the following is equivalent to 1lb?
A. 5000 grains
B. 6000 grains
C. 7000 grains
D. 8000 grains
31
In a sensible heating process the final humidity
ratio is
A. Increased
B. Decreased
C. The same
D. Cannot be determined
32
Cooling and dehumidifying process is commonly
used for
A. Summer air conditioning
B. Ice making
C. Winter cooling
D. Heat pumping
33
The process of simultaneous cooling and
decreasing of humidity ratio is known as
A. Sensible cooling
B. Cooling and humidifying
C. Cooling and dehumidifying
D. Heating and dehumidifying
34
The process of cooling without changing the
humidity ratio is known as
A. Sensible heating
B. Cooling and dehumidifying
C. Sensible cooling
D. Heating and humidifying
35
The process of simultaneous heating and
humidifying ratio is known as
A. Sensible cooling
B. Cooling and humidifying
C. Heating and humidifying
D. Heating and dehumidifying
36
Which of the following cycle is bulky and
involves toxic fluids hence it is unsuitable for
home and autocooling
A. Carnot refrigeration cycle
B. Absorption cycle
C. Vapor and compression cycle
D. Air refrigeration cycle
37
Which of the following refrigeration cycle is
practical when large quantities of waste or
inexpensive heat energy are available?
A. Heat driven refrigeration cycle
B. Absorption cycle
C. Vapor compression cycle
D. Air refrigeration cycle
38
A product of computer-aided manufacturing and
precision machining were introduce commercially
in the late 1980s as replacements for
reciprocating compressors in small residential
air conditioners
A. Reciprocating compressors
B. Centrifugal compressors
C. Rotary compressors
D. Scroll compressors
39
Condensers used in small and medium sized up to
approximately 100 tons refrigerators.
A. Air-cooled condensers
B. Water cooled condensers
C. High side condensers
D. Low side condensers
40
For efficient operation, the condensing
temperature should not be lower than
A. 5 C
B. 17 C
C. 10 C
D. 20 C
41
For efficient operation, the condensing
temperature should not be more than
A. 5 C
B. 17 C
C. 10 C
D. 20 C
42
An evaporator in a refrigeration unit makes use
of which heat transfer modes?
A. Conduction
B. Convection
C. Radiation
D. All of the above
43
Energy added to a vapor is known as a latent heat
of vaporization
A. Latent heat of vaporization
B. Sensible heat of vapor
C. Superheat
D. B and C
44
The vaporization process that occurs at
temperature below the triple point of a substance
is called.
A. Evaporation
B. Boiling
C. Sublimation
D. Condensation
45
As the pressure increases, the amount of work it
can do increases and its enthalpy
A. Increases
B. Remained the same
C. Decreases
D. Pressure and enthalpy has no relation at all
46
Forced draft fans are run at relatively high
speeds in the range of
A. 1200 to 1800 rpm
B. 1500 to 2000 rpm
C. 1000 to 1600 rpm
D. 900 to 1500 rpm
47
The simultaneous demand of all customers required
at any specified point in an electric power
system is called
A. Demand
B. Electrical demand
C. Power demand
D. Load
48
During the compression process, the internal
energy of the refrigerant vapor
A. Increases
B. Decreases
C. Remain the same
D. Internal energy has no relation to the
compression process
49
The measure of the amount of thermal energy
transfer occurring within the evaporator per unit
mass under stated conditions.
A. Refrigeration capacity
B. Heat capacity
C. Refrigeration effect
D. Heat absorptivity
50
The peak power that can be produced on an
occasional basis
A. Brakepower
B. Intermittent rating
C. Continous duty rating
D. Power rating
51
A value of a property that includes the effect of
friction is known as
A. Brake value
B. Indicated value
C. Friction value
D. Actual value
52
Cooling efficiency is typically
A. 75 to 80
B. 50 to 70
C. 80 to 85
D. 90 to 95
53
In a balanced system, the available draft is
A. Unity
B. 100
C. Zero
D. Infinite
54
It is a device used for atomizing or cracking
fuel oil and through which the fuel oil is
injected into the working cylinders of Diesel
engines
A. Atomizer
B. Injector
C. Fuel spray nozzle
D. Cracker
55
Chimneys that rely on natural draft are sometimes
referred to as
A. Natural chimney
B. Normal chimney
C. Gravity chimney
D. Stack
56
Undergrounds system of hot water and / or steam
A. Hydrothermal resource
B. Geothermal resource
C. Hot water resource
D. High pressure water system
57
The process of returning spent geothermal fluids
to the subsurface Is called
A. Injection
B. Returning
C. Rejection
D. Exhaustion
58
The electricity generating plants that are
operated to meet the peak or maximum load on the
system are called
A. Peaking plants
B. High-load plants
C. High demanding plants
D. Add-on plants
59
The capacity of a substance to transmit a fluid
is called
A. Fluidity
B. Permeability
C. Porosity
D. Smoothness
60
The ratio of the aggregate volume pore spaces in
rock or soil to its total volume is called
A. Porosity
B. Sphericity
C. Permeability
D. Salinity
61
Forced draft towers can cool the water to within
A. 10 to12 F
B. 5 to 6 F
C. 20 to 24 F
D. 2.5 to 3 F
62
The higher the wet bulb temperatures
A. The higher the efficiency
B. The lower the efficiency
C. The efficiency is limited
D. The efficiency is maximum
63
For realistic problems, the achievable stack
effect probably should be considered to be
A. 75 of the ideal
B. Equal to the ideal
C. 80 of the ideal
D. Half the ideal
64
The device that transfer thermal energy from one
fluid to another
A. Condenser
B. Feedwater
C. Evaporator
D. Heat exchanger
65
Plunger pumps are only single-acting and are
suitable up to approximately
A. 2000 psi
B. 4000 psi
C. 8000 psi
D. 10,000 psi
66
 The ratio of total dissolved solids in the
recirculating water to the total dissolved solids
in the make-up water.
A. Ratio of concentration
B. Cooling efficiency
C. Coil efficiency
D. Bypass factor
67
Define the relative difficulty in cooling,
essentially the relative amount of contact area
or fill volume required
A. Heat load
B. Tower load
C. Cooling duty
D. Rating factor
68
Evaporation loss can be calculated from the
humidity ratio increase and is approximately
_________ decrease in water temperature
A. 0.18 per C
B. 0.25 per C
C. 0.10 per C
D. 0.30 per C
69
Traditional reciprocating pumps with pistons and
rods can be either single-acting or double acting
and are suitable up to approximately
A. 2000 psi
B. 4000 psi
C. 8000 psi
D. 10,000 psi
70
Water lost in small droplet and carried away by
the air flow
A. Range
B. Approach
C. Drift
D. Bleed-off
71
A dry-cooling tower where steam travels through
large diameter trunks to a cross-flow heat
exchanger where it is condensed and cooled by the
cooler air
A. Direct condensing tower
B. Indirect condensing dry cooling tower
C. Evaporative cooling tower
D. Atmospheric cooling tower
72
The minimum fluid energy required at the pump
inlet for satisfactory operation is known as
A. NPSHR
B. NPSHA
C. Velocity head
D. Friction head
73
The actual fluid energy at the inlet
A. NPSHR
B. NPSHA
C. Velocity head
D. Friction head
74
Throttling the input line to a pump and venting
or evacuating the receiver tank
A. Both increase cavitation
B. Both decrease cavitation
C. Both eliminate cavitation
D. Both drive cavitation
75
The ratio of the actual to the ideal heat
transfer coefficient.
A. Fouling factor
B. Sensible heat ratio
C. Cleanliness factor
D. Biot number
76
The ratio of the maximum to minimum mass steam
flow rates at which the temperature can be
accurately contained by the desuperheater.
A. Cleanliness factor
B. Capacity factor
C. Turndown ratio
D. Fouling factor
77
With a reversible regenerator, the thermal
efficiency of the Ericsson cycle is ______ to
that of the Carnot cyle
A. Less than
B. Greater than
C. Proportional
D. Equal
78
The electro magnetic radiation emitted from the
daughter nucleus when an alpha particles leaves
the patent atom
A. Neutron
B. Position
C. Gamma ray
D. K-capture
79
Which of the following statement is a scheme for
energy storage?
A. Pumped hydro
B. Magnetic energy storage
C. Thermal energy storage
D. All of the above
80
Which of the following types of air dryers works
by absorbing moisture on a solid dessicant or
drying material such as activated alumina,
silicon gel or molecular sieve?
A. Regenerative dryer
B. Spray dryer
C. Deliquescent dryer
D. Refrigerated dryer
81
The water bearing stratum of permeable san, rock,
or gravel is called
A. Reservoir
B. Water source
C. Aquifer
D. Well
82
The effectiveness of a body as a thermal radiator
at a given temperature.
A. Absorptivity
B. Conductivity
C. Emissivity
D. Reflectivity
83
Combining the conservation of mass and momentum
equations into a single equation and plotting it
on the h-s diagram yield a curve called
A. Fanno line
B. Rayleigh line
C. Willians line
D. Molliers line
84
A reactor that employs fast or high energy
neutrons and contains no moderator is called
A. High energy reactor
B. Fast reactor
C. High speed reactor
D. Turbo reactor
85
The size of a steam reciprocating pumps is
generally designed by a three-digits number size
as 646. The first digit designates
A. Stroke of the pump in inches
B. Inside diameter of the steam cylinder measured
in inches
C. Percent clearance
D. Number of cylinder
86
A reactor that utilizes slow moving neutrons
A. Slow reactor
B. Intermediate reactor
C. Thermal reactor
D. Slow speed reactor
87
When two bodies, isolated from other environment,
are in thermal equilibrium with a third body, the
two are in thermal equilibrium with each other.
A. Zeroth law of thermodynamic
B. First law of thermodynamicsr
C. Second law of thermodynamics
D. Third law of thermodynamics
88
The electricity generating units that are
operated to meet the constant or minimum load on
the system is called
A. Constant load plants
B. Baseload plants
C. Invariable load plants
D. Steady load plants
89
What are the main components in a combined cycle
power plant?
A. Diesel engine and air compressor
B. Steam boiler and turbine
C. Gas engine and waste heat boiler
D. Nuclear reactor and steam boiler
90
The law that states Entropy of all perfect
crystalline solids is zero at absolute zero
temperature
A. Zeroth law of thermodynamic
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics
91
The power required to deliver a given quantity of
fluid against a given head with no losses in the
pump is called
A. Wheel power
B. Brake power
C. Hydraulic power
D. Indicated power
92
Fluid that are pumped in processing work are
frequently more viscous than water. Which of the
following statement is correct?
A. Reynolds number varies directly as the
viscosity
B. Efficiency of a pump increases as the
viscosity increases
C. Increased fluid friction between the pump
parts and the passing fluid increases useful work
D. Working head increases as the viscosity
93
An expression of the mass of water vapor per unit
mass of dry air
A. Relative humidity
B. Absolute humidity
C. Humidity ratio
D. Saturation ratio
94
Which of the following is equivalent to 1 lb?
A. 5000 grains
B. 6000 grains
C. 7000 grains
D. 8000 grains
95
The locus of states that the same value of
stagnation enthalpy and mass flux is called.
A. Fanno line
B. Rayleigh line
C. Willians line
D. Molliers line
96
Across the shock, the stagnation temperature of
an ideal gas
A. Increases
B. Decreases
C. Remains constant
D. Proportional
97
The sum of the energies of all the molecules in a
system where energies appear in several complex
forms is the
A. Kinetic energy
B. Internal energy
C. Potential energy
D. Friction energy
98
The geometrical electricity generating plants
that employs a closed-loop heat exchange system
in which the heat of the primary fluid is
transferred to a secondary fluid, which is
thereby vaporized and used to drive a turbine
generator set
A. Binary cycle plant
B. Dual cycle plant
C. Double cycle plant
D. Cascade cycle
99
The water formed by condensation of steam is
called
A. Distilled water
B. Condensate
C. Dew
D. Condenser
100
The geothermal solution which contains
appreciable amounts of sodium chloride or other
salts is called
A. Sulfur dioxide
B. Potassium silicate
C. Sea water
D. Brine
101
The quantity of heat required to raise the
temperature of one pound of water one degree
Fahrenheit at standard conditions.
A. Btu
B. Calorie
C. Joule
D. Centigrade
102
The process that uses a stream of geothermal of
hot water or stream to perform successive task
requiring temp is called
A. Diminishing heat
B. Decreasing heat
C. Cascading heat
D. Negative gradient process
103
A structure that removes heat from condensate is
called
A. Desuperheater
B. Cooling tower
C. Evaporator
D. Condenser
104
After the water passes through the turbine, it is
discharges through the draft tube to the
receiving reservoir known as the
A. Tail race
B. Tailwater
C. Draft tube
D. Setting
105
The Carnot refrigeration cycle includes all of
the following process except
A. Isentropic expansion
B. Isenthalpic expansion
C. Isothermal expansion
D. Isentropic compression
106
The maximum possible work that can be obtained a
cycle operating between two reservoirs is found
from
A. Process irreversibility
B. Carnot efficiency
C. Availability
D. Reversible work
107
If a draft tube is not employed, water maybe
returned to the tailwater by way of a channel is
known as the
A. tail race
B. tailwater
C. Draft tube
D. Setting
108
In a typical hydroelectric generating plant using
reaction turbines, the turbine is generally
housed in a
A. Powerhouse
B. Penstock
C. Forbay
D. Setting
109
The turbine, draft tube and all related parts
comprise what is known as
A. Powerhouse
B. Forbay
C. Setting
D. Surge chamber
110
The following factors are necessary to define a
thermodynamic cycle expect
A. The working substance
B. High and low temperature reservoirs
C. The time it takes to complete the cycle
D. The means of doing work on the system
111
A temperature above which a given gas cannot be
liquefied
A. Cryogenic temperature
B. Absolute temperature
C. Vaporization temperature
D. Critical temperature
112
The mass flow rate produces by the compressor is
A. Proportional to the mass of the suction vapor
that the compressor takes in at the suction inlet
per unit time
B. Equal to the mass of the suction vapor that
the compressor takes in at the suction inlet per
unit time
C. Less than the mass of the suction vapor that
the compressor takes in at the suction inlet per
unit time
D. Greater that the mass of the suction vapor
that the compressor takes in at the suction inlet
per unit time
113
Which of the following is a reserved Brayton
cycle?
A. Carnot refrigeration cycle
B. Vapor refrigeration cycle
C. Air refrigeration cycle
D. Absoption cycle
114
A 100kg is at 0C is heated by supplying 2000KJ
of heat to it. If the heat of fusion is 335kJ/kg
how many kilograms of ice will melt into water?
A. 8 kg
B. 10 kg
C. 6 kg
D. 3 kg
115
Determine the quantity of latent heat transferred
to an evaporator when 5 kg of water undergoes
those changes from a liquid at 0C to ice at 0C.
A. 1,300 kJ
B. 1,675 kJ
C. 1,450 kJ
D. 1,800 kJ
116
Compute the rate of water transfer by melting an
ice at a rate of 50 kg/hr.
A. 8 kJ/sec
B. 10 kJ/sec
C. 5 kJ/sec
D. 12 kJ/sec
117
10 kg of water at 60C receives 42,000kJ of heat
coming from the surrounding. Assuming it is open
to the atmosphere, how many kilograms of water
will be vaporized?
A. 18 kg
B. 15 kg
C. 10 kg
D. 20 kg
118
As the liquid changes phase to vapor, its enthalpy
A. Increases
B. Decreases
C. Remains constant
D. Enthalpy has no relation to phase change
119
Which of the following processes does not alter
the kinetic energy level of a substance?
A. Fusion
B. Adding sensible heat to a solid
C. Adding sensible heat to a liquid
D. Superheating a vapor
120
In new equipment, which of the following replace
R-11?
A. R-12
B. R-123
C. R-502
D. R-22
121
What is the power seat width of a spray valve?
A. 1/16 in.
B. 1/32 in.
C. 1/8 in.
D. 1/4 in.
122
The useful energy transfer in Btu/hr divided by
input power in watts. This is just the
coefficient of performance expressed in mixed
units.
A. Energy efficient ratio
B. Coil efficient
C. Bypass factor
D. Sensible heat ratio
123
If EER is the energy efficiency ratio, and COP is
the coefficient of performance then
A. EER3.41COP
B. COP3.41EER
C. EERxCOP3.41
D. 3.41EERxCOP1
124
Which of the following is a reversed Rankine
vapor cycle?
A. Carnot refrigeration cycle
B. Vapor refrigeration cycle
C. Air refrigeration cycle
D. Absoption cycle
125
 The most common type of refrigeration cycle,
finding application in household refrigerators,
air conditioners for cars and houses, chillers
and so on.
A. Carnot refrigeration cycle
B. Vapor refrigeration cycle
C. Air refrigeration cycle
D. Absoption cycle
126
Condensers used for larger capacities
refrigerators.
A. Air-cooled condersers
B. Water-cooled condensers
C. High side condensers
D. Low side condenser
127
Weight per unit volume is termed as
A. Specific gravity
B. Specific density
C. Weight density
D. Pressure
128
Measure of hotness or coldness of the body
A. Pressure
B. Temperature
C. Energy
D. Entropy
129
Suction lines should not be sized too large, as
reasonable velocity is needed to carry oil from
the evaporator back to the compressor. For
horizontal suction lines, the recommended minimum
velocity is
A. 3.8 m/s
B. 6.1 m/s
C. 7.1 m/s
D. 4.8 m/s
130
The temperature at which the water vapor in the
air begins to condensed, or the temperature at
which the relative humidity of air becomes 100.
A. Flash point
B. Boiling point
C. Dew point
D. Freezing point
131
Plunger pumps are only single-acting and are
suitable up to approximately
A. 2000 psi
B. 4000 psi
C. 8,000 psi
D. 10,000 psi
132
The ratio of the maximum to minimum mass steam
flow rates at which the temperature can be
accurately contained by the desuperheater.
A. Cleanliness factor
B. Capacity factor
C. Turndown ratio
D. Fouling factor
133
A manometer is an instrument that is used to
measure
A. Air pressure
B. Condensate water level
C. Heat radiation
D. Air volume
134
The relationship of water vapor in the air at the
dew point temperature to the amount that should
be in the air if the air were saturated at the
dry-bulb temperature is
A. Partial pressure actual dew point
B. Percentage humidity
C. Relative humidity
D. Run faster
135
All of the following statements about wet bulb
temperature are true, EXCEPT
A. Wet bulb temperature aequals adiabatic
saturation temperature
B. Wet bulb temperature is the only temperature
necessary to determine grains water per lb of dry
air
C. Wet bulb temperature lies numerically between
dew point and dry bulb temperature for
unsaturated systems
D. Wet bulb temperature equals both dry-bulb and
dew point temperature at 100 relative humidity
136
Heat added to or removed from a substance that
cause a change of temperature
A. Absolute heat
B. Latent heat
C. Specific heat
D. Sensible heat
137
The ratio of the actual to the ideal heat
transfer coefficient.
A. Fouling factor
B. Sensible heat ratio
C. Cleanliness factor
D. Biot number
138
Used to described the act of blowing the exhaust
product out with the air-fuel mixture
A. Supercharging
B. Scavenging
C. Honing
D. Choking
139
Which of the following compresses and increases
the amount of air that enters the cylinder per
stoke
A. Supercharging
B. Scavenging
C. Honing
D. Choking
140
Coolers and chillers for water generally operate
with an average temperature difference of
A. 3 to 11 C
B. 5 to 8 C
C. 6 to 22 C
D. 10 to 16 C
141
To avoid freezing problems, entering refrigerant
should be
A. Below-2 C
B. Above-2 C
C. Equal to-2 C
D. 0 C
142
Type of turbine used for low heads, high
rotational speeds and larger flow rates
A. Axial flow turbines
B. Reaction turbines
C. Radial flow turbines
D. Impulse turbines
143
To keep the deflected jet out of the way of the
incoming jet, the actual angle is limited to
approximately
A. 135 deg.
B. 150 deg.
C. 165 deg.
D. 175 deg.
144
It consists of a wet and dry bulb thermometers
mounted on a strip of metal
A. Manometer
B. Gyrometer
C. Pyrometer
D. Sling psychrometer
145
Which of the following turbines are centrifugal
pumps operating in reverse?
A. Reaction turbines
B. Impulse turbines
C. Tangential turbines
D. Axial flow turbines
146
The maximum speed of the turbine under no and no
governing action is called
A. Runaway speed
B. Pre governing speed
C. Governing speed
D. No load governing
147
Which of the following statements is false when
gasoline is used as diesel fuel.
A. Gasoline does not ignite
B. Gasoline wears the fuel-injection pumps
because of its low viscosity
C. Addition of lubrication oil to gasoline will
just severe the situation
D. All of the above
148
Which of the following is an advantage of
hydro-plants?
A. Hydro plants provide ancillary benefits like
irrigation, flood control, aquaculture navigation
etc.
B. Modern hydro generators give high efficiency
over considerable range of load. This helps in
improving the system
C. Due to its great ease of taking up and
throwing off the load, the hydro power can be
used as the ideal spinning reserve in a system
mix of the thermal, hydro and power station
D. All of the above
149
The hole area behind the dam draining into a
stream or river across which dam has been
constructed is called
A. Lake
B. Forebay
C. Catchment area
D. Reserve potential
150
Dams constructed primarily to store flood waters
called
A. Storge dams
B. Diversion dams
C. Detention dam
D. None of the above
151
A channel which lead water to a turbine is called
A. Canal
B. Tailrace
C. Penstock
D. Headrace
152
Sometimes called percentage humidity
A. Relative humidity
B. Absolute humidity
C. Humidity ratio
D. Saturation ratio
153
When measuring ____________ of air, the bulb of
the thermometer should be shaded to reduce the
effect of direct radiation
A. Dry bulb temperature
B. Wet bulb temperature
C. Critical temperature
D. Saturation temperature
154
An ordinary thermometer whose bulb is enclosed in
a wetted cloth sac or wick
A. Dry bulb thermometer
B. Wet bulb thermometer
C. Ordinary thermometer
D. Mercury thermometer
155
To obtain an accurate reading with a wet bulb
thermometer, the wick should be saturated with
A. Clean air
B. Vapor
C. Moist
D. Clean water
156
The amount by which the wet bulb temperature is
reduced below the dry bulb temperature depends on
the relative humidity of the air and is collective
A. Range
B. Approach
C. Drift
D. Wet bulb depression
157
A form of supercharging in which the exhaust
gases drive the supercharger
A. Lugging
B. Honing
C. Turbocharging
D. Blower charging
158
The latent heat of the air is a function of the
A. Wet bulb temperature
B. Dry bulb temperature
C. Dewpoint temperature
D. Saturation temperature
159
The total heat of air is a function of the
A. Wet bulb temperature
B. Dry bulb temperature
C. Dewpoint temperature
D. Saturation temperature
160
A single suction pump having its suction nozzle
on the opposite side casing from the stuffing box
and having the face of the suction perpendicular
to the longitudinal axis of the shaft.
A. Centifugal pump
B. In line pump
C. End suction pump
D. Horizontal pump
161
A centrifugal pump with one or more impellers
discharging into one or more bowls and a vertical
educator or column pipe used to connect the bowls
to the discharge head on which the pump driver is
mounted.
A. Horizontal split case pump
B. In line pump
C. End suction pump
D. Vertical shaft turbine pump
162
A pump that takes suction from a public service
main or private use water system for the purpose
of increasing the effective water pressure.
A. Horizontal split case pump
B. Booster pump
C. Submersible pump
D. Vertical shaft turbine pump
163
The measure of the ability of a goal to
withstand exposure to the environment elements
without excessive crumbling
A. crumbling coefficient
B. weatherability
C. cohensiveness
D. attrition coefficient
164
A type of coal that tends to break apart as it
burns thereby exposing the unburned coal to the
combustion air.
A. loose coal
B. free burning coal
C. non-cohensive coal
D. aggregate
165
The measure of the relationship between the dry
bulb and dewpoint temperature of the air and as
such, it provides a convenient means of Dewpoint
temperature of the air when the dry bulb
temperature is known
A. Wet bulb temperature
B. Saturation temperature
C. Humidity ratio
D. Relative humidity
166
An index of the total heat (enthalpy) of the air
A. Wet bulb temperature
B. Saturation temperature
C. Dry bulb temperature
D. Dewpoint temperature
167
The sensible heat of the air is a function of the
A. Wet bulb temperature
B. Dry bulb temperature
C. Dewpoint temperature
D. Saturation temperature
168
A type of coal that produced a fused coal mass as
it burns.
A. plastic coal
B. caking coal
C. soft coal
D. high-moisture coal
169
A combustible coal content that produces a major
atmospheric pollutant consequently, it is
important that coal has a low percentage of this
component.
A. nitrogen
B. sulfur
C. carbon
D. hydrogen
170
Which of the following statement is/are true
regards to the first law of thermodynamics for a
change in state of a control mass
A. since heat and work are path function Q-W must
also be a path function
B. Q-W is an inexact differential
C. A and B
D. Q-W is a point function
171
Which of the following statements is/are true
with regards to heat and work.
A. heat and work are both transient phenomena
B. both heat and work are boundary phenomena
C. both heat and work are path function
D. all of the above
172
The height of the surface of the water above the
gage point
A. pressure head
B. velocity head
C. dynamic head
D. static head
173
The head required to produced a flow of the water.
A. static head
B. pressure head
C. velocity head
D. dynamic head
174
The sum of the pressure head and velocity head.
A. static head
B. pressure head
C. velocity head
D. dynamic head
175
The dynamic pressure of the liquid at pump
section less the corresponding to the temperature
at the same point, converted to liquid.
A. NPSH
B. specific head
C. pump operating head
A. suction head
176
The algebraic difference of the discharge and
suction heads.
A. pump operating head
B. TDH
C. A and B
D. NPSH
177
The transfer of the heat energy from exhaust
gases to compressed air flowing between the
compressor and combustion chamber.
A. intercooling
B. convection
C. regeneration
D. economics
178
The removal of heat from compressed air between
stages of compression.
A. regeneration
B. exhaustion
C. heat evacuation
D. intercooling
179
As a general rule, the cooling water side of the
condenser should be schedule for inspection for
every
A. month
B. 3 months
C. 6 months
D. year
180
If the compressor runs continually, the cause
might be the
A. high-pressure cutout switch is jammed shut
B. low pressure switch is jammed shut
C. thermal bulb is not operating properly
D. scale trap is clogged
181
If the temperature in the icebox is too high, the
trouble could be
A. a clogged scale trap
B. air in the system
C. automatic controls not functioning properly
D. insufficient cooling water to the condenser
182
If frost forms on the cylinders, the cause would
be
A. expansion valve not open wide enough
B. charging valve open too wide
C. expansion valve open too wide
D. dehydrator not working properly
183
The most likely cause of high superheat would be
A. too much refrigerant
B. expansion valve open too wide
C. expansion valve closed in too much
D. back-pressure valve set too high
184
Short-cycling means that the machine
A. grounds out frequently
B. stops and starts frequently
C. runs too fast
D. runs too slow
185
If the cooling water to the condenser should
suddenly fail
A. the solenoid valve will close
B. the compressor will shut down
C. the expansion valve will close
D. an alarm will ring to notify the engineer
186
Calculate the net radiation heat flux exchange of
two bodies with surface temperature of 25 deg C.
The radiation heat transfer coefficient is 7.0
W/m2-k
A. 700 w/sq m
B. 750 w/sq m
C. 665 w/sq m
D. 650 w/sq m
187
Calculate the reserve factor for a power plant
with a load factor of 0.7 average load of 50 MW
and rated capacity of 80 MW
A. 2
B. 1.5
C. 1.12
D. 1.6
188
Maximum demand of 30 MW and 10 MW are connected
to a power plant with a peak load of 70 MW. What
is the diversity factor of the plant?
A. 0.50
B. 0.70
C. 0.65
D. 0.86
189
A gas in piston-cylinder set-up undergoes an
expansion of such rate that PV 1.2 constant.
Before the expansion process the pressure of the
gas is 300 kpa and the volume is 0.50 m3. If the
final volume of the gas is 0.1 m3, calculate the
work done by the gas
A. 9.71 KJ
B. 11.0 KJ
C. 12 KJ
D. 8 KJ
190
The phenomenon in which air enters a submerged
suction pipe from the water surface is called a
A. whirlpool
B. vacuum
C. vortex
D. thixotropic
191
Where groundwater ( wells and springs) or surface
water (streams and takes) are used for feedwater,
water hardness of ___ and alkalinity of pH 10 to
be ph should be considered
A. 0-10 ppm
B. 10-20 ppm
C. 20-30 ppm
D. 30-40 ppm
192
Which of the following is not a solid fuel?
A. peat
B. briquettes
C. tar
D. coke
193
Canisters of helmets shall be removed immediately
after having been used or Seal broken and is
unused, must be renewed at least once every
A. 1 year
B. 2 years
C. 3 years
D. 4 years
194
Pump whose purpose is to increase the effective
water pressure by sucking water from a public
service main or private-use water system
A. horizontal split case pump
B. vertical shaft turbine pump
C. booster pump
D. submersible pump
195
A small fitting with a double offset, or shaped
like the letter U with the ends turned out
A. elbow tee
B. expansion loop
C. spigot joint
D. cross-over
196
The condition in which droplets of water are
carried by steam in the boiler
A. priming
B. breeching
C. carryover
D. condensation
197
A circular chip ( k 150 w/ mk) with a diameter
d10mm and thickness t 4 mm is embedded in a
circuit board. Its surface is exposed to the flow
of a coolant (h 250 W/m2k, T 10 degrees C)
while its side and back surface and perfectly
insulated. If any point in the chip the temp must
not exceed 90 degrees C, what is the steady state
heat dissipation of the chip?
A. 2.5 W
B. 1.6 W
C. 2.0 W
D. 1.8 W
198
A 5m thick flat plane ( k60 w/ m k) is well
insulated on its sides, while the top and bottom
surfaces are maintained at 150 deg. Assuming a
steady state heat conduction, calculate the
temperature 4 m below the top surface.
A. 100 deg c
B. 120 deg c
C. 94 deg c
D. 80 deg c
199
A 3 cm layer asbestos k20 W/m degrees C is
used for a pipe k20 W/m degrees C with 15 cm
inside diameter and 12 cm outer diameter. The
inside wall temperature of the pipe is maintained
at 500 deg C while the outside surface of
asbestos at 90 deg C. Calculate the heat loss per
meter length
A. 1265 w/m
B. 1500 w/m
C. 1400 w/m
D. 1100 w/m
200
A solid of diameter D0.5 m and surface
emissivity of 0.8 contains electrons that
dissipate 100 W of heat. If it does not receive
radiation from the surroundings, what is the
surface temp?
A. 300 deg C
B. 280 deg C
C. 230 deg C
D. 270 deg C
201
Which of the following is basically a jet engine
that exhausts into a turbine generator?
A. aeroderivative gas turbine
B. brayton engine
C. industrial gas turbine
D. joule turbine
202
It is referred to as the maximum continous power
available from a hydroelectric power plant even
under the most adverse hydraulic condition
A. primary power
B. continuous base power
C. continuous peak power
D. firm power
203
The memory lost when the operating power is
removed
A. power memory
B. volatile memory
C. initial memory
D. quick data
204
The interaction that occurs between a system and
its surroundings as the system executes a
process, which is the result of the system being
at the temperature different from the surrounding
is
A. mass transfer
B. heat transfer
C. work transfer
D. none of the above
205
Exergy destruction is a result of
A. Heat transfer
B. work production
C. process irreversibility
D. none of the above
206
An air pollutant which isth e result of burning
fuels oils
A. ferrous oxide
B. hydrogen nitride
C. sulfur dioxide
D. aluminum oxide
207
Analysis of solid fuel to determine moisture,
volatile matter, fixed carbon, and ash expressed
as percentage of the total weight of the sample
A. viscometer
B. proximate analysis
C. ultimate
D. pour point
208
A gas analysis apparatus in which the percentage
of oxygen, carbon dioxide and neonoxide in the
gas measured by absorption in separate chemical
solutions
A. orsat
B. proximate
C. ultimate
D. pour point
209
At the start of the compression process of an
air-standard diesel power cycle the pressure is
100kpa and the temp is 15 deg C. for a mean
effective pressure of 1362 kpa and compression
ratio of 18 the heat of combustion developed is
1800 kj/kg. what is the thermal efficiency of the
cycle?
A. 65
B. 59
C. 55
D. 68
210
The water added to boiler feed to compensate for
the water lost through blowdown, leakage, etc
A. condensate
B. make-up
C. sulfur
D. economizer
211
Gas flow caused by boilers pressure being less
than boilers furnace pressure
A. induced draft
B. infrared
C. injector
D. inhibitor
212
An automatic pressure-relieving device that opens
in proportion to the increase in pressure over
its opening pressure
A. pressure gauge
B. relieve valve
C. ammeter
D. calorimeter
213
Air can be prevented from getting into the system
by
A. keeping all gland and stuffing boxes on the
high pressure side tight
B. keeping the dehydrator clean at all times
C. keeping all glands and stuffing boxes on the
low pressure side tighter
D. running the refrigerant through an aerator
214
An excessively high head pressure could be caused
by
A. solenoid valve shut off
B. insufficient cooling water to the condenser
C. insufficient cooling water to the evaporator
coils
D. too much cooling water to the condenser
215
The solenoid valve is controlled by
A. the amount of liquid in the system
B. the amount of gas in the system
C. the temperature in the condenser
D. the thermal switch operated by the icebox
temperature
216
If the discharge side of the thermal expansion
valve is warmer than the
A. expansion valve is working normally
B. expansion valve is not working normally
C. solenoid valve is not working normally
D. scale trap is dirty
217
If the pressure is too high
A. the relief valve should open before the high
pressure output
B. the relief valve should open and let excess
refrigerant go to receiver
C. the high pressure output switch should operate
before the relief valve
D. close in on the suction valve  
218
If a pressurized water reactor (PWR)
A. the coolant water is pressurized to work as
moderator
B. the coolant water boils in the core of the
reactor
C. the coolant water is pressurized to prevent
boiling of water in the core
D. no moderator is used
219
Which of the following property of coal has major
influence on the design and operation of a steam
power plant
A. density of coal
B. carbon content of coal
C. ash content of coal
D. shape and size of coal
220
A boiler horsepower is equal to the evaporation
of 3405lbs of 100 degrees c water per hr. how
much steam in lb per hour a 700 horsepower boiler
can generate?
A. 24150 lb / hr
B. 21000 lb/ hr
C. 18000 lb/hr
D. 30000 lb/hr
221
___ is obtained by mixing and burning precisely
the right amount of fuel and oxygen so that
products are left once combustion is complete
A. perfect combustion
B. burning combustion
C. firing combustion
D. burning combustion
222
What type of boiler commonly used in industrial
and heavy commercial application due to less
expensive to make low pressure, easier to
maintain and repair
A. water tube boiler
B. fire tube boiler
C. air tube boiler
D. marine water
223
During the emergency operation of the boiler,
when there is no water in the gauge glass and
steam comes out of the bottom trycock, the water
level cannot be determined. What preventive
measure the operator does to save the boiler
A. shutdown the boiler and do not add water
B. add water to compensate the water loss
C. increase the firing rate
D. continue to operate the boiler and add water
224
The most important valve in the boiler operation
and the last line of defense against disaster is
known as
A. pressure gauge
B. compound gauge
C. safety valve
D. gate valve
225
Why should you avoid bending or twisting of fan
blades in an air conditioning unit?
A. it will not cause ice build up
B. it will wear out the motor bearings cause
noise
C. it may not slice suction line
D. it decrease the volume flow of refrigerant
226
Under normal operating conditions, when a solid
material to be dried is placed inside a batch
tray dryer, the material is usually subjected
A. under constant drying conditions
B. under variable drying conditions
C. under high temperature drying
D. under low temperature drying
227
A change of phase directly from vapor to solid
without passing through the liquid state is
called as
A. sublimation
B. vaporization
C. solidification
D. deposition
228
In terms of heat transfer, the use of a cooling
tower is said to be more efficient and more
economical compared to an ordinary heat exchanger
since
A. large volume of air is available and free
B. temperature profiles of air and water can
cross each other
C. large amount of water can be processed
D. a cooling tower is much smaller and cheaper
than a heat exchanger
229
It is a form of oxygen photochemicallly produced
in nature
A. ozone
B. oxidizing agent
C. oxidation
D. C02
230
What is the chemical formula of ozone
A. O3
B. D3O
C. O2
D. O1
231
In the upper atmosphere, ozone is nade by
ultraviolet light reacting with
A. oxygen
B. nitrogen
C. hydrogen
D. water vapor
232
the ozone concentration of parts per
million(ppm) is generally considered maximum
permissible for how many hours of exposure?
A. 8 hrs
B. 7 hrs
C. 4 hrs
D. 3 hrs
233
How may moisture be removed from air?
A. condensation
B. adsorption
C. A and B
D. none of these
234
in cooling cycle, the dry bulb temp (db) of the
air is lowered, what will happens to the
relative humidity
A. increased
B. decreases
C. remains constant
D. increases or decreases depending on the
temperature at which it is cooled
235
what is the effect of superheating the
refrigerant?
A. it increases the coefficient of performance
B. it decreases the coefficient of performance
C. it lowers the boiling point of the refrigerant
D. it increases the suction pressure of the
refrigerant  
236
A turbine setting where one disadvantage is the
difficulty of lubricating the operating
mechanism, with consequent relatively rapid water
A. siphon setting
B. open fume setting
C. cast setting
D. capacity setting  
237
In sensible heating the absolute humidity remains
constant but the relative humidity
A. increases
B. remains constant
C. decreases
D. zero
238
The relative humidity becomes 100 and where the
water vapor start to condense
A. dew point
B. saturated point
C. cloud point
D. critical point
239
Which of the following is the type of refrigerant
that damages Ozone layer?
A. Hydrocholorofluorocarbons (HCHFs)
B. R-22
C. R-12
D. All of these
240
Why should you avoid bending or twisting of fan
blades in an air conditioning unit?
A. It will cause ice build-up
B. It will wear out the motor bearings and cause
noise
C. It may not slice suction line
D. It decreases the volume flow of refrigerant
241
The phenomenon that warm air rise and cold air
settle is called
A. Stratification
B. Setting Due
C. Sedimentation
D. Ventilation
242
Which of the following components of the window
air conditioning system cleaned annually?
A. Evaporator and condenser
B. Fan blades and fan motor
C. Motor and compressor
D. All of these
243
The ratio of the maximum pressure in the cycle to
the atmospheric pressure
A. cycle pressure ratio
B. cycle pressure level
C. regenerator effectiveness
D. thermal efficiency  
244
A rough measure of the physical size of the
equipment which must handle the specified
quantity of the fluid
A. pressure ratio  
B. fuel rate
C. thermal efficiency
D. air ratio
245
A patented device combining expansion and
compression function in a single rotor permitting
higher cycle temperatures
A. comprex
B. compressor
C. expander
D. single-shaft  
246
The ratio of the highest main compressor
discharge pressure as the lower main compressor
inlet pressure
A. cycle pressure ratio
B. cycle pressure level
C. work ratio
D. air ratio  
247
The ratio of the actual partial pressure exerted
by tge water vapor in any volume of air to the
partial pressure that would be exerted by the
water vapor in the air is saturated at the
temperature of the air
A. relative humidity
B. absolute humidity
C. humidity ratio
D. saturation ratio  
248
A cooled heat exchanger that transfer heat from
compressed air to cooler air.
A. Intercooler
B. Refrigerator
C. Economizer
D. Aftercooler
249
A large paper plant uses its own cogeneration
power plant to generate its electricity because.
A. It permits the use of a more efficient
generator
B. The company can better control the voltage
C. It does away with high power lines leading to
the plant
D. It provides a more efficient conversion of fuel
250
All the control stand, pitch of the turbine
blades must be adjusted manually by a
A. Sensor
B. Float valve
C. Gate
D. Switch
251
The most commonly used adjustable-blade propeller
turbine.
A. Francis turbine
B. Kaplan turbine
C. Impulse turbine
D. Pelton wheel
252
Large-bulb alcohol thermometer used to measure
air speed or atmospheric condition by means of
cooling.
A. Kata thermometer
B. JJ Thompson Thermometer
C. Kelvin Thermometer
D. Wet Bulb Thermometer
253
What is supplied to the servomotor from the
turbine governor oil system through the generator
shaft and through a control valve.
A. Water
B. Air
C. Steam
D. Oil
254
A type of refrigerant that will not damage the
ozone layer.
A. Hydrofluorocarbons (HCFs)
B. R-22
C. Hydrochlorofluorocarbons (HCHFs)
D. R-12
255
The volumetric output of a centrifugal pump is
reduced by closing a valve part way on the intake
side of the pump, throttling the intake. The
reduction of flow is accompanied by popping
noises which seem to come from inside the case.
What is the probable cause?
A. The impeller has broken
B. Dirt particles have got into the pump intake
C. The intake valve flow seal is loose and
vibrates
D. The fluid is cavitating
256
Runner blades are adjusted automatically in
synchronism with turbine wicker gates by a/an.
A. Control valve
B. Governor
C. Oil servomotor
D. Manual operation
257
Used to exhaust air from the casing for starting.
A. Ejectors
B. Dearator
C. Injector
D. Blower
258
Advantage for propeller turbines of all types
A. open flumes setting
B. siphon setting
C. cost setting
D. capacity setting
259
In a refrigerator, this is a chamber for storing
low-side liquid refrigerant in a system, which
also serves as a surge drum.
A. Condenser
B. Evaporator
C. Compressor
D. Accumulator
260
Equipment designed to reduce the amount of water
vapor in the ambient atmosphere
A. Blower
B. Condenser
C. Dehumidifier
D. Cooling tower
261
The measure of a fluids resistance to flow(the
internal friction of a fluid) as temperature
increase.
A. Density
B. Viscosity
C. Specific gravity
D. Temperature
262
A mechanical device used to burn solid fuel
specifically used in coal power plant.
A. Stroker
B. Boiler
C. Staybolt
D. Condenser
263
Reflector of a nuclear reactor are made up of
A. Boron
B. Cast iron
C. Beryllium
D. Steel
264
The ratio of the internal thermal resistance of a
solid to the boundary layer thermal resistance is
described by
A. Biot number
B. Nusselt number
C. Prandtl number
D. Reynolds number
265
Air arrangement of headwater tubes located in the
boiler
A. Economizer
B. Condenser
C. Evaporator
D. Boiler
266
The chemically correct ratio of air fuel a
mixture capable of perfect combustion with no
unused air or fuel,
A. Fuel point
B. Pour point
C. Stoichiometric ratio
D. Stack
267
When a solid material is said to be dry it
means that
A. The solid does not contain any moisture
B. The solid still contains very small amount of
moisture
C. The solid contains equilibrium moisture
D. The weight of the solid is the same as the
bone dry weight
268
An instrument which is commonly used to measure
the most important characteristics of fuel oil
which is viscosity is known as
A. Saybolt Viscosimeter
B. Ph-meter
C. Acid Testmeter
D. Gravity meter
269
An office air conditioning system drew in a
quantitity of hot air from outside, cooled it to
1 deg C, and mixed it with the internal air of a
building. Care was taken to supply enough fresh
air to eliminate objectionable odors. The
temperature of the space was maintained constant,
and yet some people became uncomfortable in the
afternoon, why?
A. The relative humidity had dropped
B. When a person spends a long time at a constant
temperature that person becomes uncomfortable
C. Radiant heat from others in the office made
the space uncomfortable
D. The complainers were not really uncomfortable,
they were just bored
270
A hot block is cooled by blowing cool air over
its top surface. The heat that is first
transferred to the air layer close to the block
is by conduction. It is eventually carried away
from the surface by
A. Convection
B. Radiation
C. Conduction
D. Thermal
271
Which of the following is the most commonly used
moderator?
A. Graphite
B. Sodium
C. Deuterium
D. Heavy water
272
Ammonia leaks in the condenser can be detected by
A. Smelling the discharge water
B. Applying litmus paper to the circulating water
discharge
C. Adding oil of peppermint to the system and
tracing the small
D. Applying a scapy mixture to the condenser
heads and looking for bubbles
273
When drying banana chips under the sun, the rate
of drying is faster
A. On a slightly breezy day
B. On a calm day
C. On a cloudy day
D. On a hot and windy day
274
In a cooling tower, the water is cooled mainly by
A. Condensation
B. Evaporation
C. Convection
D. Conduction
275
If a man touches two metals which were kept
together at room temperature, why would one metal
feel colder that the other?
A. One has a high temperature coefficient
B. One has a lower temperature
C. One has a high thermal conductivity
D. One has a high temperature
276
A temperature above which a given gas cannot be
liquefied
A. Cryogenic Temperature
B. Absolute Temperature
C. Vaporization
D. Critical Temperature
277
What part of heat exchangers that are classified
as radiant convection and placed at the near of
the furnace, where they receive the bulk of the
radiation from the flame.
A. Radiant superheaters
B. Condenser
C. Radiator
D. Evaporators
278
The function of a moderator in a nuclear reactor
is
A. To slow down the fast moving electrons
B. To speed up the slow moving electrons
C. To start the chain reaction
D. To transfer the heat produced inside the
reactor to a heat exchanger
279
A moderator is used to
A. Slow down neutrons
B. Slow down electrons
C. Accelerate neutrons
D. Direct flow of electron
280
In nuclear power plant which of the following is
used to slow down the fast neutron?
A. Reflector
B. Shield
C. Control rod
D. Moderator
281
Which of the following is the major consideration
while selecting the nuclear power plant?
A. Safety
B. Load center
C. Disposal of waste
D. Availability of water
282
The effectiveness of a body as a thermal radiator
at a given temperature.
A. Absorptivity
B. Emissivity
C. Conductivity
D. Reflectivity
283
Control rods for nuclear reactors are made of
A. Graphite
B. Concrete
C. Cadmium
D. Lead
284
The reactor in which fissionable fuel produced is
more than the fuel consumed is known as
A. Fast reactor
B. Breeder reactor
C. Thermal reactor
D. None of the above
285
A heat engine whose thermodynamic efficiency is
greater than that of a Carnot device using the
same energy reservoir is known as
A. A perpetual machine of the zeroth kind
B. A perpetual machine of the second kind
C. A perpetual machine of the first kind
D. A perpetual machine of the third kind
286
What is the color code of steam line in
geothermal power plant?
A. Green
B. Blue
C. Silver Gray
D. Red
287
What is absorbed by sulphites in boiler water
treatment?
A. Carbon dioxide
B. Oxygen
C. Carbon monoxide
D. Impurities settled in mud drums
288
Which of th