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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 pumpB. Booster pumpC. Submersible pumpD. Vertical shaft turbines pump

Answer: C

An underground formation that

contains sufficient saturated

permeable material to yield

significant quantities of water.

A. AquiferB.

Ground waterC. Wet pit

D. Well waterAnswer: A

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. AquiferB. Ground waterC. Wet pitD. Well water

Answer: C

Water which is available from well,

driven into water bearing

subsurface strata (aquifer)

A. AquiferB. Ground waterC.

Wet pit

D. Well waterAnswer: B

Imparts velocity to the liquid,

resulting from centrifugal force as

the impeller is rotated.

A. ImpellerB. Stuffing boxC. CasingD. Shaft sleeve

Answer: A

A means of throttling the leakage

which would otherwise occur at the

point of entry of the shaft into

the casing.

A. ImpellerB. Stuffing boxC.

CasingD. Shaft sleeve

Answer: B

Protect the shaft where it passes

through the stuffing box.

A. ImpellerB. Stuffing boxC. CasingD. Shaft sleeve

Answer: D

The ratio of the actual vapor

density to the vapor density at

saturation

A. Relative humidityB. Absolute humidityC. Humidity ratioD. Saturation ratio

Answer: A

An expression of the mass of water

vapor per unit mass of dry air

A. Relative humidityB. Absolute humidityC. Humidity ratioD. Saturation ratio

Answer: C

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Which of the following is

equivalent to 1lb?

A. 5000 grainsB. 6000 grainsC. 7000 grainsD. 8000 grains

Answer: C

The bypass factor for large

commercial units

A. Around 20%B. Around 30%C. Around 10%D. Around 50%

Answer: C

Sometimes called specific humidity

A. Relative humidityB. Absolute humidityC. Humidity ratioD. Saturation ratio

Answer: C

For any given barometric pressure,

the humidity ratio is a function of

the

A. Critical temperatureB. Dew point temperatureC. Dry bulb temperatureD. Wet bulb temperature

Answer: B

The humidity ratio corresponding to

any given dew point temperature

varies with the total barometric

pressure, increasing as the

barometric pressure

A. IncreasesB. DecreasesC. VariesD. Constant

Answer: B

The ratio of the mass of water

vapor in the air per unit mass of

dry to the mass of water vapor

requires for saturation of the same

air sample

A. Relative humidityB. Absolute humidityC. Humidity ratioD. Saturation ratio

Answer: D

A closed channel excavated through

an obstructiuon such as a ridge of

higher land between the dam and the

powerhouse is called

A. CanalB. HeadraceC. PenstockD. Tunnel

Answer: D

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. PenstockB. Power reservoirC. Pressure tankD. Tunnel

Answer: D

The regulation of the water in the

form of a relatively small pond of

reservoir provided at the plant is

called

A. PondageB. Water storageC. ReservoirD. Lake

Answer: A

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A structure used to relieve the

reservoir of excess water

A. SpillwayB. Diversion channelC. Butress damD. Arch dam

Answer: A

The fluid pressure difference

created by column of heated gas, as

by7 chimney is called

A. Natural draftB. Forced draftC. Induce draftD. Required draft

Answer: A

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 draftB. Induced draftC. Required draftD. Balanced draft

Answer: B

Also known as Francis turbines or

radial flow turbines

A. Impulse turbinesB. Tangential turbinesC. Reaction turbinesD. Axial flow turbines

Answer: C

The turbine, draft tube and all

related parts comprise what is

known as

A. PowerhouseB. ForbayC. SettingD. Surge chamber

Answer: C

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. ForbayB. Draft tubeC. Surge chamberD. Penstock

Answer: C

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 %D. 175 deg.

Answer: C

The minimum fluid energy required

at the pump inlet for satisfactory

operation is known as

A. NPSHRB. NPSHAC. Velocity headD.

Friction head

Answer: A

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Throttling the input line to a pump

and venting or evacuating the

receiving tank

A. Both increase cavitationB. Both decrease cavitationC. Both eliminate cavitationD. Both drive cavitation

Answer: A

Traditional reciprocating pumps

with pistons and rods can be either

single-acting or double acting and

are suitable up to approximately

A. 2000 psiB. 4000 psiC. 8000 psiD. 10,000 psi

Answer: A

In a sensible heating process the

final humidity ratio is:

a. Increasedb. Decreasedc. The samed. Cannot be determined

Answer: C

In an adiabatic saturation process

the final relative humidity is:

A. IncreasedB. DecreasedC. The sameD. Cannot be determined

Answer: A

Cooling and dehumidifying process

is commonly used for:

A. Summer air conditioningB. Ice makingC. Winter coolingD. Heat pumping

Answer: A

An adiabatic saturation process is

also known as:

A. Constant WB temperatureprocess

B. Constant DB temperatureprocess

C. Constant DP temperatureprocess

D. Constant vapor temperatureprocess

Answer: A

The process of simultaneous heating

and dehumidifying is known as:

A. Sensible heatingB. Cooling and dehumidifyingC. Sensible coolingD. Chemical dehumidifying

Answer: D

The process in increasing the dry-

bulb temperature without changing

the humidity ratio is known as:

A. Sensible heatingB. Cooling and dehumidifyingC. Sensible coolingD. Heating and dehumidifying

Answer: A

The process of simultaneous cooling

and decreasing of humidity ratio is

known as:

A. Sensible coolingB. Cooling and humidifyingC. Cooling and dehumidifyingD. Heating and dehumidifying

Answer: C

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The process of cooling without

changing the humidity ratio is

known as:

A. Sensible heatingB. Cooling and dehumidifyingC. Sensible coolingD. Heating and humidifying

Answer: C

The process of simultaneous heating

and humidifying ratio is known as:

A. Sensible coolingB. Cooling and humidifyingC. Heating and humidifyingD. Heating and dehumidifying

Answer: C

Which of the following cycle is

bulky and involves toxic fluids

hence it is unsuitable for home and

autocooling

A. Carnot refrigeration cycleB. Absorption cycleC. Vapor and compression cycleD. Air refrigeration cycle

Answer: B

Which of the following

refrigeration cycle is practical

when large quantities of waste or

inexpensive heat energy are

available?

A. Reciprocating compressorsB. Centrifugal compressorsC. Rotary compressorsD. Scroll compressors

Answer: D

Condensers used in small and medium

sized up to approximately 100 tons

refrigerators.

A. Air-cooled condensersB. Water cooled condensersC. High side condensersD. Low side condensers

Answer: A

For efficient operation, the

condensing temperature should not

be lower than

A. 5 CB. 17 CC. 10 CD. 20 C

Answer: A

For efficient operation, the

condensing temperature should not

be more than

A. 5 CB. 17 CC. 10 CD. 20 C

Answer: B

An evaporator in a refrigeration

unit makes use of which heat

transfer modes?

A. ConductionB. ConvectionC. RadiationD. All of the above

Answer: D

Energy added to a vapor is known as

a latent heat of vaporization

A. Latent heat of vaporizationB. Sensible heat of vaporC. SuperheatD. B and C

Answer: C

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The vaporization process that

occurs at temperature below the

triple point of a substance is

called.

A. EvaporationB. BoilingC. SublimationD. Condensation

Answer: C

As the pressure increases, the

amount of work it can do increases

and its enthalpy

A. IncreasesB. Remained the sameC. DecreasesD. Pressure and enthalpy has no

relation at all

Answer: A

During the compression process, the

internal energy of the refrigerant

vapor

A. IncreasesB. DecreasesC. Remain the sameD. Internal energy has no

relation to the compression

process

Answer: A

The measure of the amount of

thermal energy transfer occurring

within the evaporator per unit mass

under stated conditions.

A. Refrigeration capacityB.

Heat capacity

C. Refrigeration effectD. Heat absorptivity

Answer: C

The peak power that can be produced

on an occasional basis

A. BrakepowerB. Intermittent ratingC. Continous duty ratingD. Power rating

Answer: B

A value of a property that includes

the effect of friction is known as:

A. Brake valueB. Indicated valueC. Friction valueD. Actual value

Answer: A

Forced draft fans are run at

relatively high speeds in the range

of

A. 1200 to 1800 rpmB. 1500 to 2000 rpmC. 1000 to 1600 rpmD. 900 to 1500 rpm

Answer: A

Chimneys that rely on natural draftare sometimes referred to as

A. Natural chimneyB. Normal chimneyC. Gravity chimneyD. Stack

Answer: C

For realistic problems, the

achievable stack effect probably

should be considered to be

A. 75% of the idealB. Equal to the idealC. 80 % of the idealD. Half the ideal

Answer: C

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In a balanced system, the available

draft is

A. UnityB. 100C. ZeroD. Infinite

Answer: C

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. AtomizerB. InjectorC. Fuel spray nozzleD. Cracker

Answer: A

The device that transfer thermal

energy from one fluid to another

A. CondenserB. FeedwaterC. EvaporatorD. Heat exchanger

Answer: D

Undergrounds system of hot water

and / or steam

A. Hydrothermal resourceB. Geothermal resourceC. Hot water resourceD. High pressure water system

Answer: A

The process of returning spent

geothermal fluids to the subsurface

Is called

A. InjectionB. ReturningC. RejectionD. Exhaustion

Answer: A

The simultaneous demand of all

customers required at any specified

point in an electric power system

is called

A. DemandB. Electrical demandC. Power demandD. Load

Answer: D

The electricity generating plants

that are operated to meet the peak

or maximum load on the system are

called

A. Peaking plantsB.

High-load plants

C. High demanding plantsD. Add-on plants

Answer: A

The capacity of a substance totransmit a fluid is called

A. FluidityB. PermeabilityC. PorosityD. Smoothness

Answer: B

The ratio of the aggregate volumepore spaces in rock or soil to itstotal volume is called

A. PorosityB. SphericityC. PermeabilityD. Salinity

Answer: A

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Cooling efficiency is typically

A. 75 to 80%B. 50 to 70%C. 80 to 85%D. 90 to 95%

Answer: B

Forced draft towers can cool thewater to within

A. 10 to12 FB. 5 to 6 FC. 20 to 24 FD. 2.5 to 3 F

Answer: B

The higher the wet bulbtemperatures

A. The higher the efficiencyB. The lower the efficiencyC. The efficiency is limitedD.

The efficiency is maximum

Answer: B

Define the relative difficulty incooling, essentially the relativeamount of contact area or fillvolume required

A. Heat loadB. Tower loadC. Cooling dutyD. Rating factor

Answer: D

Evaporation loss can be calculatedfrom the humidity ratio increaseand is approximately _________decrease in water temperature

A. 0.18% per CB. 0.25% per CC. 0.10% per CD. 0.30% per C

Answer: A

Water lost in small droplet andcarried away by the air flow

A. RangeB. ApproachC. DriftD. Bleed-off

Answer: C

The ratio of total dissolved solidsin the recirculating water to thetotal dissolved solids in the make-up water.

A. Ratio of concentrationB. Cooling efficiencyC. Coil efficiencyD. Bypass factor

Answer: A

A dry-cooling tower where steamtravels through large diametertrunks to a cross-flow heatexchanger where it is condensed andcooled by the cooler air

A. Direct condensing towerB. Indirect condensing dry

cooling tower

C. Evaporative cooling towerD. Atmospheric cooling tower

Answer: A

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The minimum fluid energy requiredat the pump inlet for satisfactoryoperation is known as

A. NPSHRB. NPSHAC. Velocity headD. Friction head

Answer: A

The actual fluid energy at theinlet

A. NPSHRB. NPSHAC. Velocity headD. Friction head

Answer: B

Throttling the input line to a pumpand venting or evacuating thereceiver tank

A. Both increase cavitationB. Both decrease cavitationC. Both eliminate cavitationD. Both drive cavitation

Answer: A

Traditional reciprocating pumpswith pistons and rods can be eithersingle-acting or double acting andare suitable up to approximately

A. 2000 psiB. 4000 psiC. 8000 psiD. 10,000 psi

Answer: A

Plunger pumps are only single-acting and are suitable up toapproximately

A. 2000 psiB. 4000 psiC. 8000 psiD. 10,000 psi

Answer: D

The ratio of the actual to theideal heat transfer coefficient.

A. Fouling factorB. Sensible heat ratioC. Cleanliness factorD. Biot number

Answer: C

The ratio of the maximum to minimummass steam flow rates at which thetemperature can be accuratelycontained by the desuperheater.

A. Cleanliness factorB. Capacity factorC. Turndown ratioD. Fouling factor

Answer: C

With a reversible regenerator, thethermal efficiency of the Ericssoncycle is ______ to that of theCarnot cyle

A. Less thanB. Greater thanC. ProportionalD. Equal

Answer: D

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The electron magnetic radiationemitted from the daughter nucleuswhen an alpha particles leaves thepatent atom

A.B. NeutronC. PositionD. Gamma rayE. K-capture

Answer: C

Which of the following statement isa scheme for energy storage?

A. Pumped hydroB. Magnetic energy storageC. Thermal energy storageD. All of the above

Answer: D

A reactor that employs fast or highenergy neutrons and contains nomoderator is called

A. High energy reactorB. Fast reactorC. High speed reactorD. Turbo reactor

Answer: B

A reactor that utilizes slow movingneutrons

A. Slow reactorB. Intermediate reactorC. Thermal reactorD. Slow speed reactor

Answer: C

The water bearing stratum ofpermeable san, rock, or gravel iscalled

A. ReservoirB. Water sourceC. AquiferD. Well

Answer: C

The electricity generating unitsthat are operated to meet theconstant or minimum load on thesystem is called

A. Constant load plantsB. Baseload plantsC. Invariable load plantsD. Steady load plants

Answer: B

The effectiveness of a body as athermal radiator at a giventemperature,

A. AbsorptivityB. ConductivityC. EmissivityD. Reflectivity

Answer: C

What are the main components in acombined cycle power plant?

A. Diesel engine and aircompressor

B. Steam boiler and turbineC. Gas engine and waste heat

boiler

D. Nuclear reactor and steamboiler

Answer: C

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The size of a steam reciprocatingpumps is generally designed by athree-digits number size as 646.The first digit designates

A. Stroke of the pump in inchesB. Inside diameter of the steam

cylinder measured in inches

C. Percent clearanceD. Number of cylinder

Answer: B

The power required to deliver agiven quantity of fluid against agiven head with no losses in thepump is called

A. Wheel powerB. Brake powerC. Hydraulic powerD. Indicated power

Answer: C

Fluid that are pumped in processing

work are frequently more viscousthan water. Which of the followingstatement is correct?

A. Reynolds number variesdirectly as the viscosity

B. Efficiency of a pumpincreases as the viscosityincreases

C. Increased fluid frictionbetween the pump parts andthe passing fluid increases

useful workD. Working head increases as the

viscosity

Answer: C

The law that states Entropy of all

perfect crystalline solids is zeroat absolute zero temperature

A. Zeroth law of thermodynamicB. First law of thermodynamicsC. Second law of thermodynamicsD. Third law of thermodynamics

Answer: D

An expression of the mass of watervapor per unit mass of dry air

A. Relative humidityB. Absolute humidityC. Humidity ratioD. Saturation ratio

Answer: C

Which of the following isequivalent to 1 lb?

A. 5000 grainsB. 6000 grainsC. 7000 grainsD. 8000 grains

Answer: C

The locus of states that the samevalue of stagnation enthalpy andmass flux is called.

A. Fanno lineB. Reyleigh lineC. Willians lineD. Molliers line

Answer: A

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Combining the conservation of massand momentum equations into asingle equation and plotting it onthe h-s diagram yield a curvecalled

A. Fanno lineB. Reyleigh lineC. Willians lineD. Molliers line

Answer: B

Across the shock, the stagnationtemperature of an ideal gas

A. IncreasesB. DecreasesC. Remains constantD. Proportional

Answer: C

Which of the following types of airdryers works by absorbing moistureon a solid dessicant or dryingmaterial such as activated alumina,silicon gel or molecular sieve?

A. Regenerative dryerB. Spray dryerC. Deliquescent dryerD. Refrigerated dryer

Answer: C

When two bodies, isolated fromother environment, are in thermalequilibrium with a third body, thetwo are in thermal equilibrium witheach other.

A. Zeroth law of thermodynamicB. First law of thermodynamicsC. Second law of thermodynamicsD. Third law of thermodynamics

Answer: A

The sum of the energies of all themolecules in a system whereenergies appear in several complexforms is the

A. Kinetic energyB. Internal energyC. Potential energyD. Friction energy

Answer: B

The Carnot refrigeration cycle

includes all of the followingprocess except

A. Isentropic expansionB. Isenthalpic expansionC. Isothermal expansionD. Isentropic compression

Answer: B

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The maximum possible work that canbe obtained a cycle operatingbetween two reservoirs is foundfrom

A. Process irreversibilityB. Carnot efficiencyC. AvailabilityD. Reversible work

Answer: B

The following factors are necessaryto define a thermodynamic cycleexpect

A. The working substanceB. High and low temperature

reservoirs

C. The time it takes to completethe cycle

D. The means of doing work onthe system

Answer: C

A temperature above which a givengas cannot be liquefied

A. Cryogenic temperatureB. Absolute temperatureC. Vaporization temperatureD. Critical temperature

Answer: D

The geometrical electricitygenerating plants that employs aclosed-loop heat exchange system inwhich the heat of the primary fluidis transferred to a secondaryfluid, which is thereby vaporizedand used to drive a turbinegenerator set

A. Binary cycle plantB. Dual cycle plantC. Double cycle plantD. Cascade cycle

Answer: A

The geothermal solution which

contains appreciable amounts ofsodium chloride or other salts iscalled

A. Sulfur dioxideB. Potassium silicateC. Sea waterD. Brine

Answer: D

The quantity of heat required toraise the temperature of one poundof water one degree Fahrenheit atstandard conditions.

A. BtuB. CalorieC. JouleD. Centigrade

Answer: A

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The process that uses a stream ofgeothermal of hot water or streamto perform successive taskrequiring temp is called

A. Diminishing heatB. Decreasing heatC. Cascading heatD. Negative gradient process

Answer: C

The water formed by condensation ofsteam is called

A. Distilled waterB. CondensateC. DewD. Condenser

Answer: B

A structure that removes heat fromcondensate is called

A. DesuperheaterB. Cooling towerC. EvaporatorD. Condenser

Answer: B

In a typical hydroelectricgenerating plant using reactionturbines, the turbine is generallyhoused in a

A. PowerhouseB. PenstockC. ForbayD. Setting

Answer: A

After the water passes through theturbine, it is discharges throughthe draft tube to the receivingreservoir known as the

A. Tail raceB. TailwaterC. Draft tubeD. Setting

Answer: A

The turbine, draft tube and allrelated parts comprise what isknown as

A. PowerhouseB. ForbayC. SettingD. Surge chamber

Answer: C

When a forbay is not part of thegenerating plants design, it will

be desirable to provide a ________in order to relieve the effects ofrapid changes in flowrate.

A. ForbayB. Draft tubeC. Surge chamberD. Penstock

Answer: C

To keep the deflected jet out ofthe way of the incoming jet, theactual angle is limited toapproximately

A. 90 deg.B. 135deg.C. 165%D. 175deg.

Answer: C

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The spontaneous vaporization of thefluid, resulting in a degradationof pump performance.

A. CavitationB. Vapor lockC. Available headD. Net head

Answer: A

A dry cooling tower where steam iscondensed by cold water jets(surface or jet condenser)

A. Direct condensing towerB. Indirect condensing dry

cooling tower

C. Evaporative cooling towerD. Atmospheric cooling tower

Answer: B

If the heat is being removed fromwater, the device is known as

A. ChillerB. CoolerC. Air conditionerD. Air cooler

Answer: A

Which of the following is therefrigerant of choice in uniting

air conditioners?

A. R-22B. R-123C. R-11D. R-502

Answer: A

In new equipment, which of thefollowing replace R-11?

A. R-12B. R-123C. R-502D. R-22

Answer: B

The mass flow rate produces by thecompressor is

A. Proportional to the mass ofthe suction vapor that the

compressor takes in at thesuction inlet per unit time

B. Equal to the mass of thesuction vapor that thecompressor takes in at thesuction inlet per unit time

C. Less than the mass of thesuction vapor that thecompressor takes in at thesuction inlet per unit time

D. Greater that the mass of thesuction vapor that the

compressor takes in at thesuction inlet per unit time

Answer: B

A boiler operated at pressure notexceeding 1.055kg/cm2 gage steam,or water temperature no exceeding121C.

A. Low pressure heating boilerB.

Hot water supply boiler

C. MiniatureD. Power boiler

Answer: A

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The very hot steam that doesnt

occur with a liquid

A. Pure steamB. Saturated vaporC. Critical steamD. Dry steam

Answer: D

The steam produced when thepressure on a geothermal liquid isreduced

A. Low pressure steamB. High quality steamC. Sub pressure steamD. Flashed steam

Answer: D

The vent or hole in the Earthsurface, usually in a volcanicregion, from which, gaseous vapors,or hot gasses issue.

A. FumarolesB. CraterC. Hot spotD. Hot spring

Answer: A

The earth interior heat madeavailable to man by extracting itfrom hot water or rocks.

A. Geological heatB. Geothermal heatC. Volcanic heatD. None of these

Answer: B

Device that takes advantage of therelatively constant temperature ofthe Earths interior, using it as a

source and sink of heat for bothheating and cooling.

A. Geothermal devicesB. Geothermal generatorC. Geothermal heat pumpsD. Geothermal turbines

Answer: C

The spring that shoots jets of hotwater and steam into the air iscalled

A. GeyserB. Hot jetC. Thermal jetD. Guyshen

Answer: A

What is the power seat width of aspray valve?

A. 1/16 in.B. 1/32 in.C. 1/8 in.D. 1/4 in.

Answer: A

A device which automaticallygoverns or controls the speed of anengine.

A. ServomotorB. IndicatorC. GovernorsD. Speedometer

Answer: C

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The useful energy transfer inBtu/hr divided by input power inwatts. This is just the coefficientof performance expressed in mixedunits.

A. Energy efficient ratioB. Coil efficientC. Bypass factorD. Sensible heat ratio

Answer: A

If EER is the energy efficiencyratio, and COP is the coefficientof performance then

A. EER=3.41COPB. COP=3.41EERC. EERxCOP=3.41D. 3.41EERxCOP=1

Answer: A

Which of the following is areversed Rankine vapor cycle?

A. Carnot refrigeration cycleB. Vapor refrigeration cycleC. Air refrigeration cycleD. Absoption cycle

Answer: B

The most common type ofrefrigeration cycle, findingapplication in householdrefrigerators, air conditioners forcars and houses, chillers and soon.

A. Carnot refrigeration cycleB. Vapor refrigeration cycleC. Air refrigeration cycleD. Absoption cycle

Answer: B

Which of the following is areserved Brayton cycle?

A. Carnot refrigeration cycleB. Vapor refrigeration cycleC. Air refrigeration cycleD. Absoption cycle

Answer: C

A 100kg is at 0C is heated by

supplying 2000KJ of heat to it. Ifthe heat of fusion is 335kJ/kg howmany kilograms of ice will meltinto water?

A. 8 kgB. 10 kgC. 6 kgD. 3 kg

Answer: C

Determine the quantity of latentheat transferred to an evaporatorwhen 5 kg of water undergoes thosechanges from a liquid at 0C to ice

at 0C.

A. 1,300 kJB. 1,675 kJC. 1,450 kJD. 1,800 kJ

Answer: B

Compute the rate of water transferby melting an ice at a rate of 50kg/hr.

A. 8 kJ/secB. 10 kJ/secC. 5 kJ/secD. 12 kJ/sec

Answer: C

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10 kg of water at 60C receives

42,000kJ of heat coming from thesurrounding. Assuming it is open tothe atmosphere, how many kilogramsof water will be vaporized?

A. 18 kgB. 15 kgC. 10 kgD. 20 kg

Answer: A

As the liquid changes phase tovapor, its enthalpy

A. IncreasesB. DecreasesC. Remains constantD. Enthalpy has no relation to

phase change

Answer: A

Which of the following processesdoes not alter the kinetic energylevel of a substance?

A. FusionB. Adding sensible heat to a

solid

C. Adding sensible heat to aliquid

D. Superheating a vaporAnswer: A

Condensers used for largercapacities refrigerators.

A. Air-cooled condersersB. Water-cooled condensersC. High side condensersD. Low side condenser

Answers: B

Coolers and chillers for watergenerally operate with an averagetemperature difference of

A. 3 to 11 CB. 5 to 8 CC. 6 to 22 CD. 10 to 16 C

Answer: A

To avoid freezing problems,entering refrigerant should be

A. Below-2 CB. Above-2 CC. Equal to-2 CD. 0 C

Answer: B

Suction lines should not be sizedtoo large, as reasonable velocityis needed to carry oil from theevaporator back to the compressor.For horizontal suction lines, therecommended minimum velocity is

A. 3.8 m/sB. 6.1 m/sC. 7.1 m/sD. 4.8 m/s

Answer: A

Type of turbine used for low heads,high rotational speeds and largerflow rates

A. Axial flow turbinesB. Reaction turbinesC. Radial flow turbinesD. Impulse turbines

Answer: A

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To keep the deflected jet out ofthe way of the incoming jet, theactual angle is limited toapproximately

A. 135 deg.B. 150 deg.C. 165 deg.D. 175 deg.

Answer: C

Which of the following turbines arecentrifugal pumps operating inreverse?

A. Reaction turbinesB. Impulse turbinesC. Tangential turbinesD. Axial flow turbines

Answer: A

Weight per unit volume is termedas:

A. Specific gravityB. Specific densityC. Weight densityD. Pressure

Answer: C

Measure of hotness or coldness ofthe body

A. PressureB. TemperatureC. EnergyD. Entropy

Answer: B

The temperature at which the watervapor in the air begins tocondensed, or the temperature atwhich the relative humidity of airbecomes 100%.

A. Flash pointB. Boiling pointC. Dew pointD. Freezing point

Answer: C

It consists of a wet and dry bulbthermometers mounted on a strip ofmetal

A. ManometerB. GyrometerC. PyrometerD. Sling psychrometer

Answer: D

A manometer is an instrument thatis used to measure:

A. Air pressureB. Condensate water levelC. Heat radiationD. Air volume

Answer: A

The relationship of water vapor inthe air at the dew pointtemperature to the amount thatshould be in the air if the airwere saturated at the dry-bulbtemperature is:

A. Partial pressure actual dewpoint

B. Percentage humidityC. Relative humidityD. Run faster

Answer: A

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All of the following statementsabout wet bulb temperature aretrue, EXCEPT

A. Wet bulb temperature aequalsadiabatic saturation

temperature

B. Wet bulb temperature is theonly temperature necessary todetermine grains water per lbof dry air

C. Wet bulb temperature liesnumerically between dew pointand dry bulb temperature forunsaturated systems

D. Wet bulb temperature equalsboth dry-bulb and dew pointtemperature at 100% relative

humidityAnswer: C

Heat added to or removed from asubstance that cause a change oftemperature:

A. Absolute heatB. Latent heatC. Specific heatD. Sensible heat

Answer: D

Plunger pumps are only single-acting and are suitable up toapproximately

A. 2000 psiB. 4000 psiC.

8,000 psi

D. 10,000 psiAnswer: D

The ratio of the actual to theideal heat transfer coefficient.

A. Fouling factorB. Sensible heat ratioC. Cleanliness factorD. Biot number

Answer: C

The ratio of the maximum to minimummass steam flow rates at which thetemperature can be accuratelycontained by the desuperheater.

A. Cleanliness factorB. Capacity factorC. Turndown ratioD. Fouling factor

Answer: C

Used to described the act ofblowing the exhaust product outwith the air-fuel mixture

A. SuperchargingB. ScavengingC. HoningD. Choking

Answer: B

A form of supercharging in whichthe exhaust gases drive thesupercharger

A. LuggingB. HoningC. TurbochargingD. Blower charging

Answer: C

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The maximum speed of the turbineunder no and no governing action iscalled

A. Runaway speedB. Pre governing speedC. Governing speedD. No load governing

Answer: A

Which of the following statementsis false when gasoline is used asdiesel fuel.

A. Gasoline does not igniteB. Gasoline wears the fuel-

injection pumps because ofits low viscosity

C. Addition of lubrication oilto gasoline will just severethe situation

D. All of the aboveAnswer: C

Which of the following is an

advantage of hydro-plants?

A. Hydro plants provideancillary benefits likeirrigation, flood control,aquaculture navigation etc.

B. Modern hydro generators givehigh efficiency overconsiderable range of load.This helps in improving thesystem

C. Due to its great ease oftaking up and throwing offthe load, the hydro power canbe used as the ideal spinningreserve in a system mix ofthe thermal, hydro and powerstation

D. All of the aboveAnswer: B

The hole area behind the damdraining into a stream or riveracross which dam has beenconstructed is called

A. LakeB. ForebayC. Catchment areaD. Reserve potential

Answer: C

Dams constructed primarily to storeflood waters called

A. Storage damsB. Diversion damsC. Detention damD. None of the above

Answer: C

A channel which leads water to aturbine is called

A. CanalB. TailraceC. PenstockD. Headrace

Answer: D

Sometimes called percentagehumidity

A. Relative humidityB. Absolute humidityC. Humidity ratioD. Saturation ratio

Answer: D

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When measuring ____________ of air,the bulb of the thermometer shouldbe shaded to reduce the effect ofdirect radiation

A. Dry bulb temperatureB. Wet bulb temperatureC. Critical temperatureD. Saturation temperature

Answer: A

An ordinary thermometer whose bulbis enclosed in a wetted cloth sacor wick

A. Dry bulb thermometerB. Wet bulb thermometerC. Ordinary thermometerD. Mercury thermometer

Answer: B

To obtain an accurate reading witha wet bulb thermometer, the wickshould be saturated with

A. Clean airB. VaporC. MoistD. Clean water

Answer: A

The amount by which the wet bulbtemperature is reduced below thedry bulb temperature depends on therelative humidity of the air and iscollective

A. RangeB. ApproachC. DrifyD. Wet bulb depression

Answer: D

The measure of the relationshipbetween the dry bulb and dewpointtemperature of the air and as such,it provides a convenient means of

Dewpoint temperature of the airwhen the dry bulb temperature is

known

A. Wet bulb temperatureB. Saturation temperatureC. Humidity ratioD. Relative humidity

Answer: A

An index of the total heat(enthalpy) of the air

A. Wet bulb temperatureB. Saturation temperatureC. Dry bulb temperatureD. Dewpoint temperature

Answer: A

The sensible heat of the air is afunction of the

A. Wet bulb temperatureB. Dry bulb temperatureC. Dewpoint temperatureD. Saturation temperature

Answer: B

The latent heat of the air is afunction of the

A. Wet bulb temperatureB. Dry bulb temperatureC. Dewpoint temperatureD. Saturation temperature

Answer: A

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POWER PLANT

PART II

BY: JACSTONE REVIEW CENTER