[PIPE] Question Bank for Advanced Coaching Series | Set 1 – Elements | Part 5

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Question 1 of 83

1. Question

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 called the

range
Correct Incorrect Correct answer

approach
Correct Incorrect Correct answer

drify
Correct Incorrect Correct answer

wet bulb depression
Correct Incorrect Correct answer

Correct

Incorrect
Question 2 of 83

2. Question

The measure of the relationship between the dry bulb and dewpoint temperature of the air and as such, it provides a convenient means of determining the dewpoint temperature of the air when the dry bulb temperature is known.

wet bulb temperature
Correct Incorrect Correct answer

saturation temperature
Correct Incorrect Correct answer

humidity ratio
Correct Incorrect Correct answer

relative humidity
Correct Incorrect Correct answer

Correct

Incorrect
Question 3 of 83

3. Question

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

wet bulb temperature
Correct Incorrect Correct answer

saturation temperature
Correct Incorrect Correct answer

dry bulb temperature
Correct Incorrect Correct answer

dewpoint temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 4 of 83

4. Question

The sensible heat of the air is a function of the

wet bulb temperature
Correct Incorrect Correct answer

dry bulb temperature
Correct Incorrect Correct answer

dewpoint temperature
Correct Incorrect Correct answer

saturation temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 5 of 83

5. Question

The latent heat of the air is a function of the

wet bulb temperature
Correct Incorrect Correct answer

dry bulb temperature
Correct Incorrect Correct answer

dewpoint temperature
Correct Incorrect Correct answer

saturation temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 6 of 83

6. Question

The total heat of the air is a function of the

wet bulb temperature
Correct Incorrect Correct answer

dry bulb temperature
Correct Incorrect Correct answer

dewpoint temperature
Correct Incorrect Correct answer

saturation temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 7 of 83

7. Question

As long as the dew point temperature of the air remains unchanged, the latent heat of the air

decreases
Correct Incorrect Correct answer

increases
Correct Incorrect Correct answer

remains unchanged
Correct Incorrect Correct answer

varies
Correct Incorrect Correct answer

Correct

Incorrect
Question 8 of 83

8. Question

A single suction pump having its suction nozzle on the opposite side of the casing from the stuffing box and having the face of the suction nozzle perpendicular to the longitudinal axis of the shaft.

Centrifugal pump
Correct Incorrect Correct answer

In line pump
Correct Incorrect Correct answer

End suction pump
Correct Incorrect Correct answer

Horizontal pump
Correct Incorrect Correct answer

Correct

Incorrect
Question 9 of 83

9. Question

A centrifugal pump with one or more impellers discharging into one or more bowls and a vertical eductor or column pipe used to connect the bowls to the discharge head on which the pump driver is mounted.

Horizontal split case pump
Correct Incorrect Correct answer

In line pump
Correct Incorrect Correct answer

End suction pump
Correct Incorrect Correct answer

Vertical shaft turbine pump
Correct Incorrect Correct answer

Correct

Incorrect
Question 10 of 83

10. Question

A pump that takes suction from a public service main or private use water system for the purpose of increasing the effective water pressure.

Horizontal split case pump
Correct Incorrect Correct answer

Booster pump
Correct Incorrect Correct answer

Submersible pump
Correct Incorrect Correct answer

Vertical shaft turbine pump
Correct Incorrect Correct answer

Correct

Incorrect
Question 11 of 83

11. Question

A vertical turbine pump with the pump and motor closed coupled and design to be installed underground, as in the case of a deepwell pump.

Horizontal split case pump
Correct Incorrect Correct answer

Booster pump
Correct Incorrect Correct answer

Submersible pump
Correct Incorrect Correct answer

Vertical shaft turbine pump
Correct Incorrect Correct answer

Correct

Incorrect
Question 12 of 83

12. Question

An underground formation that contains sufficient saturated permeable material to yield significant quantities of water.

Aquifer
Correct Incorrect Correct answer

Ground water
Correct Incorrect Correct answer

Wet pit
Correct Incorrect Correct answer

Well water
Correct Incorrect Correct answer

Correct

Incorrect
Question 13 of 83

13. Question

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.

Aquifer
Correct Incorrect Correct answer

Ground water
Correct Incorrect Correct answer

Wet pit
Correct Incorrect Correct answer

Well water
Correct Incorrect Correct answer

Correct

Incorrect
Question 14 of 83

14. Question

Water which is available from a well, driven into water bearing subsurface strata (aquifer)

Aquifer
Correct Incorrect Correct answer

Ground water
Correct Incorrect Correct answer

Wet pit
Correct Incorrect Correct answer

Well water
Correct Incorrect Correct answer

Correct

Incorrect
Question 15 of 83

15. Question

Imparts velocity to the liquid, resulting from centrifugal force as the impeller is rotated.

impeller
Correct Incorrect Correct answer

stuffing box
Correct Incorrect Correct answer

casing
Correct Incorrect Correct answer

shaft sleeve
Correct Incorrect Correct answer

Correct

Incorrect
Question 16 of 83

16. Question

A means of throttling the leakage which would otherwise occur at the point of entry of the shaft into the casing.

impeller
Correct Incorrect Correct answer

stuffing box
Correct Incorrect Correct answer

casing
Correct Incorrect Correct answer

shaft sleeve
Correct Incorrect Correct answer

Correct

Incorrect
Question 17 of 83

17. Question

Protects the shaft where it passes through the stuffing box

impeller
Correct Incorrect Correct answer

stuffing box
Correct Incorrect Correct answer

casing
Correct Incorrect Correct answer

shaft sleeve
Correct Incorrect Correct answer

Correct

Incorrect
Question 18 of 83

18. Question

The most common means of throttling the leakage between the inside and outside of the casing

packing
Correct Incorrect Correct answer

seal gage
Correct Incorrect Correct answer

gland
Correct Incorrect Correct answer

mechanical seal
Correct Incorrect Correct answer

Correct

Incorrect
Question 19 of 83

19. Question

A positive displacement pump consisting of a fixed casing containing gears, cams, screws, vanes, plungers or similar elements actuated by rotation of the drive shaft.

Rotary pumps
Correct Incorrect Correct answer

Deep well pumps
Correct Incorrect Correct answer

Reciprocating pumps
Correct Incorrect Correct answer

Centrifugal pumps
Correct Incorrect Correct answer

Correct

Incorrect
Question 20 of 83

20. Question

The enthalpy of a fluid when it is brought to rest adiabatically.

Stagnation enthalpy
Correct Incorrect Correct answer

Static enthalpy
Correct Incorrect Correct answer

Absolute enthalpy
Correct Incorrect Correct answer

Adiabatic enthalpy
Correct Incorrect Correct answer

Correct

Incorrect
Question 21 of 83

21. Question

In the absence of any heat and work interactions and any changes in potential energy, the stagnation enthalpy of a fluid during a steady flow process.

increases
Correct Incorrect Correct answer

decreases
Correct Incorrect Correct answer

remains constant
Correct Incorrect Correct answer

proportional
Correct Incorrect Correct answer

Correct

Incorrect
Question 22 of 83

22. Question

During stagnation process, which of the following is converted to enthalpy?

Kinetic energy
Correct Incorrect Correct answer

Potential energy
Correct Incorrect Correct answer

Mechanical energy
Correct Incorrect Correct answer

Internal energy
Correct Incorrect Correct answer

Correct

Incorrect
Question 23 of 83

23. Question

The term v²/2cₚ corresponds to the temperature rise during such a process and is called

kinetic temperature
Correct Incorrect Correct answer

dynamic temperature
Correct Incorrect Correct answer

stagnation temperature
Correct Incorrect Correct answer

total temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 24 of 83

24. Question

The cross section of a nozzle at the smallest flow area is called

throat
Correct Incorrect Correct answer

nozzle area
Correct Incorrect Correct answer

converge area
Correct Incorrect Correct answer

diverge area
Correct Incorrect Correct answer

Correct

Incorrect
Question 25 of 83

25. Question

The properties of a fluid at a location where the Mach number is unity are called

critical properties
Correct Incorrect Correct answer

stagnation properties
Correct Incorrect Correct answer

unit properties
Correct Incorrect Correct answer

sonic properties
Correct Incorrect Correct answer

Correct

Incorrect
Question 26 of 83

26. Question

The locus of states that have the same value of stagnation enthalpy and mass flux is called.

Fanno line
Correct Incorrect Correct answer

Rayleigh Line
Correct Incorrect Correct answer

Willan's line
Correct Incorrect Correct answer

Mollier's line
Correct Incorrect Correct answer

Correct

Incorrect
Question 27 of 83

27. Question

Combining the conservation of mass and momentum equations into a single equation and plotting it on the h – s diagram yield a curve called

Fanno line
Correct Incorrect Correct answer

Rayleigh line
Correct Incorrect Correct answer

Willan's line
Correct Incorrect Correct answer

Mollier's line
Correct Incorrect Correct answer

Correct

Incorrect
Question 28 of 83

28. Question

Across the shock, the stagnation temperature of an ideal gas

increases
Correct Incorrect Correct answer

decreases
Correct Incorrect Correct answer

remains constant
Correct Incorrect Correct answer

proportional
Correct Incorrect Correct answer

Correct

Incorrect
Question 29 of 83

29. Question

The locus of points where condensation will take place regardless of the initial temperature and pressure at the nozzle entrance.

Fanno line
Correct Incorrect Correct answer

Rayleigh line
Correct Incorrect Correct answer

Willan line
Correct Incorrect Correct answer

Wilson line
Correct Incorrect Correct answer

Correct

Incorrect
Question 30 of 83

30. Question

The minimum amount of air needed for the complete combustion of a fuel is called

stoichiometric
Correct Incorrect Correct answer

complete
Correct Incorrect Correct answer

incomplete
Correct Incorrect Correct answer

dissociation
Correct Incorrect Correct answer

Correct

Incorrect
Question 31 of 83

31. Question

50 percent excess air is equivalent to

150% theoretical air
Correct Incorrect Correct answer

50% theoretical air
Correct Incorrect Correct answer

150% excess air
Correct Incorrect Correct answer

50% deficient air
Correct Incorrect Correct answer

Correct

Incorrect
Question 32 of 83

32. Question

90 % percent theoretical air is

10% of deficiency of air
Correct Incorrect Correct answer

90% deficiency of air
Correct Incorrect Correct answer

190% theoretical air
Correct Incorrect Correct answer

90% theoretical air
Correct Incorrect Correct answer

Correct

Incorrect
Question 33 of 83

33. Question

The difference between the enthalpy of the products at a specified state and the enthalpy of the reactants at the same state for a complete reaction

enthalpy of reaction
Correct Incorrect Correct answer

enthalpy of combustion
Correct Incorrect Correct answer

enthalpy of formation
Correct Incorrect Correct answer

enthalpy of vaporization
Correct Incorrect Correct answer

Correct

Incorrect
Question 34 of 83

34. Question

Represents the amount of heat released during a steady flow combustion process when 1 kmol or 1 kg of fuel is burned completely at a specified temperature and pressure.

enthalpy of reaction
Correct Incorrect Correct answer

enthalpy of combustion
Correct Incorrect Correct answer

enthalpy of formation
Correct Incorrect Correct answer

enthalpy of vaporization.
Correct Incorrect Correct answer

Correct

Incorrect
Question 35 of 83

35. Question

The enthalpy of a substance at a specified state due to its chemical composition.

enthalpy of reaction
Correct Incorrect Correct answer

enthalpy of combustion
Correct Incorrect Correct answer

enthalpy of formation
Correct Incorrect Correct answer

enthalpy of vaporization
Correct Incorrect Correct answer

Correct

Incorrect
Question 36 of 83

36. Question

When combustion is complete and no heat is lost to the surroundings, the temperature of a combustion chamber will be

maximum
Correct Incorrect Correct answer

minimum
Correct Incorrect Correct answer

proportional
Correct Incorrect Correct answer

same
Correct Incorrect Correct answer

Correct

Incorrect
Question 37 of 83

37. Question

Adiabatic flame temperature attains its maximum value when complete combustion occurs with the

theoretical amount of air
Correct Incorrect Correct answer

actual amount air
Correct Incorrect Correct answer

excess air
Correct Incorrect Correct answer

deficient air
Correct Incorrect Correct answer

Correct

Incorrect
Question 38 of 83

38. Question

Which of the following sensible heat ratio is used if the sensible and latent energies change as the air passes through an occupied room.

Room sensible heat ratio
Correct Incorrect Correct answer

Coil or apparatus
Correct Incorrect Correct answer

Grand sensible heat ratio
Correct Incorrect Correct answer

Effective sensible heat ratio
Correct Incorrect Correct answer

Correct

Incorrect
Question 39 of 83

39. Question

No smokes stacks should be closer than how many millimeters from any exposed woodwork or framing?

305 mm
Correct Incorrect Correct answer

206 mm
Correct Incorrect Correct answer

350 mm
Correct Incorrect Correct answer

260 mm
Correct Incorrect Correct answer

Correct

Incorrect
Question 40 of 83

40. Question

Which of the following sensible heat ratio is used if the changes occur as the air passes through an airconditioning coil.

Room sensible heat ratio
Correct Incorrect Correct answer

Grand sensible heat ratio
Correct Incorrect Correct answer

Coil or Apparatus sensible heat ratio
Correct Incorrect Correct answer

Effective sensible heat ratio
Correct Incorrect Correct answer

Correct

Incorrect
Question 41 of 83

41. Question

Since the airconditioning apparatus usually removes heat and moisture from both the conditioned room and from outside make-up air, the sensible heat ratio that can be used is

Room sensible heat ratio
Correct Incorrect Correct answer

Grand sensible heat ratio
Correct Incorrect Correct answer

Coil or Apparatus sensible heat ratio
Correct Incorrect Correct answer

Effective sensible heat ratio
Correct Incorrect Correct answer

Correct

Incorrect
Question 42 of 83

42. Question

The slope of the line between the apparatus dew-point on the saturation line and the design conditions of the conditioned space.

Room sensible heat ratio
Correct Incorrect Correct answer

Grand sensible heat ratio
Correct Incorrect Correct answer

Coil or Apparatus sensible heat ratio
Correct Incorrect Correct answer

Effective sensible heat ratio
Correct Incorrect Correct answer

Correct

Incorrect
Question 43 of 83

43. Question

The sensible heat ratio is a

sensible slope
Correct Incorrect Correct answer

latent slope
Correct Incorrect Correct answer

geometric slope
Correct Incorrect Correct answer

psychrometric slope
Correct Incorrect Correct answer

Correct

Incorrect
Question 44 of 83

44. Question

The percentage of the air that is not cooled or heated is

bypass factor
Correct Incorrect Correct answer

coil factor
Correct Incorrect Correct answer

energy-efficiency ratio
Correct Incorrect Correct answer

saturation ratio
Correct Incorrect Correct answer

Correct

Incorrect
Question 45 of 83

45. Question

The bypass factors for residential units are approximately

10%
Correct Incorrect Correct answer

15%
Correct Incorrect Correct answer

25%
Correct Incorrect Correct answer

35%
Correct Incorrect Correct answer

Correct

Incorrect
Question 46 of 83

46. Question

The complement of the bypass factor is

Saturation ratio
Correct Incorrect Correct answer

energy efficiency ratio
Correct Incorrect Correct answer

coil efficiency
Correct Incorrect Correct answer

grand efficiency
Correct Incorrect Correct answer

Correct

Incorrect
Question 47 of 83

47. Question

When sensible heat is given up, which of the following is true?

Wet bulb temperature is less than the dry bulb temperature
Correct Incorrect Correct answer

Wet bulb is greater than the dry bulb temperature
Correct Incorrect Correct answer

Wet bulb temperature is equal to the dry bulb temperature
Correct Incorrect Correct answer

Wet bulb temperature is proportional to the dry bulb temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 48 of 83

48. Question

An adiabatic saturation process can be produced with a

regular temperature
Correct Incorrect Correct answer

sling psychrometer
Correct Incorrect Correct answer

bypass factor
Correct Incorrect Correct answer

wet cotton or gauze
Correct Incorrect Correct answer

Correct

Incorrect
Question 49 of 83

49. Question

Rapidly twirling the thermometer through the air at the end of a cord will cause the water in the gauze to

condense
Correct Incorrect Correct answer

evaporate
Correct Incorrect Correct answer

saturate
Correct Incorrect Correct answer

freeze
Correct Incorrect Correct answer

Correct

Incorrect
Question 50 of 83

50. Question

Since the increase in the water vapor’s latent heat content equals the decrease in the air’s sensible heat, the total enthalpies before and after adiabatic saturation are

not equal
Correct Incorrect Correct answer

proportional
Correct Incorrect Correct answer

equal
Correct Incorrect Correct answer

Zero
Correct Incorrect Correct answer

Correct

Incorrect
Question 51 of 83

51. Question

The saturation efficiency of large commercial air washes is typically

90 to 95%
Correct Incorrect Correct answer

80 to 85%
Correct Incorrect Correct answer

75 to 80%
Correct Incorrect Correct answer

85 to 90%
Correct Incorrect Correct answer

Correct

Incorrect
Question 52 of 83

52. Question

The mass of water added to the air per unit time

water vapor
Correct Incorrect Correct answer

humidification load
Correct Incorrect Correct answer

pure load
Correct Incorrect Correct answer

grand load
Correct Incorrect Correct answer

Correct

Incorrect
Question 53 of 83

53. Question

With sensible heating and cooling, the dewpoint or moisture content of the air

increases
Correct Incorrect Correct answer

decreases
Correct Incorrect Correct answer

proportional
Correct Incorrect Correct answer

constant
Correct Incorrect Correct answer

Correct

Incorrect
Question 54 of 83

54. Question

The temperature determined from the intersection of the condition line and the curve saturation line on the psychrometric chart

Apparatus dewpoint
Correct Incorrect Correct answer

wet bulb temperature
Correct Incorrect Correct answer

Dry bulb temperature
Correct Incorrect Correct answer

Saturation temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 55 of 83

55. Question

The temperature to which the air would be cooled if 100% of it contacted the coil

Apparatus dewpoint
Correct Incorrect Correct answer

wet bulb temperature
Correct Incorrect Correct answer

Dry bulb temperature
Correct Incorrect Correct answer

saturation temperature
Correct Incorrect Correct answer

Correct

Incorrect
Question 56 of 83

56. Question

What occurs when the air passes through a water spray as in an air washer?

evaporative cooling process
Correct Incorrect Correct answer

humidification
Correct Incorrect Correct answer

dehumidification
Correct Incorrect Correct answer

adiabatic saturation
Correct Incorrect Correct answer

Correct

Incorrect
Question 57 of 83

57. Question

The water column should be provided with a valve drain of at least

25 mm pipe size
Correct Incorrect Correct answer

19 mm pipe size
Correct Incorrect Correct answer

30 mm pipe size
Correct Incorrect Correct answer

36 mm pipe size
Correct Incorrect Correct answer

Correct

Incorrect
Question 58 of 83

58. Question

To prevent ice build up, the cooled air temperature should

above the freezing point water
Correct Incorrect Correct answer

above the dewpoint
Correct Incorrect Correct answer

below the freezing point of water
Correct Incorrect Correct answer

below the dewpoint
Correct Incorrect Correct answer

Correct

Incorrect
Question 59 of 83

59. Question

Air passing through a solid or liquid adsorbent bed, such as silica gel or activated alumina will

decrease in humidity
Correct Incorrect Correct answer

increase in humidity
Correct Incorrect Correct answer

not change in humidity
Correct Incorrect Correct answer

proportional humidity
Correct Incorrect Correct answer

Correct

Incorrect
Question 60 of 83

60. Question

A device that passes air through dense spray of recirculating water

adsorbent
Correct Incorrect Correct answer

air washer
Correct Incorrect Correct answer

cooling tower
Correct Incorrect Correct answer

spray nozzle
Correct Incorrect Correct answer

Correct

Incorrect
Question 61 of 83

61. Question

The mass of water sprayed to the mass of air passing through the washer per unit time

humidification load
Correct Incorrect Correct answer

spray ratio
Correct Incorrect Correct answer

water vapor
Correct Incorrect Correct answer

circulation ratio
Correct Incorrect Correct answer

Correct

Incorrect
Question 62 of 83

62. Question

In a cooling tower, the water passes over staggered slats or interior fill, also known as

shedding
Correct Incorrect Correct answer

packing
Correct Incorrect Correct answer

cellular
Correct Incorrect Correct answer

polyvinyl
Correct Incorrect Correct answer

Correct

Incorrect
Question 63 of 83

63. Question

The actual difference between the entering and leaving temperatures of water.

water range
Correct Incorrect Correct answer

approach
Correct Incorrect Correct answer

drift
Correct Incorrect Correct answer

bleed-off
Correct Incorrect Correct answer

Correct

Incorrect
Question 64 of 83

64. Question

Cooling efficiency is typically

75 to 80%
Correct Incorrect Correct answer

50 to 70%
Correct Incorrect Correct answer

80 to 85%
Correct Incorrect Correct answer

90 to 95%
Correct Incorrect Correct answer

Correct

Incorrect
Question 65 of 83

65. Question

Forced draft towers can cool the water to within

10 to 12 F
Correct Incorrect Correct answer

5 to 6 F
Correct Incorrect Correct answer

20 to 24 F
Correct Incorrect Correct answer

2.5 to 3 F
Correct Incorrect Correct answer

Correct

Incorrect
Question 66 of 83

66. Question

The higher the wet bulb temperatures

the higher the efficiency
Correct Incorrect Correct answer

the efficiency is limited
Correct Incorrect Correct answer

the lower the efficiency
Correct Incorrect Correct answer

the efficiency is maximum
Correct Incorrect Correct answer

Correct

Incorrect
Question 67 of 83

67. Question

Define the relative difficulty in cooling, essentially the relative amount of contact area or fill volume required

heat load
Correct Incorrect Correct answer

tower load
Correct Incorrect Correct answer

cooling duty
Correct Incorrect Correct answer

rating factors
Correct Incorrect Correct answer

Correct

Incorrect
Question 68 of 83

68. Question

Evaporation loss can be calculated from the humidity ratio increase and _____ is approximately decrease in water temperature

0.18 % per C
Correct Incorrect Correct answer

0.25% per C
Correct Incorrect Correct answer

0. 10% per C
Correct Incorrect Correct answer

0.30% per C
Correct Incorrect Correct answer

Correct

Incorrect
Question 69 of 83

69. Question

Water lost in small droplets and carried away by the air flow

range
Correct Incorrect Correct answer

approach
Correct Incorrect Correct answer

drift
Correct Incorrect Correct answer

bleed-off
Correct Incorrect Correct answer

Correct

Incorrect
Question 70 of 83

70. Question

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

ratio of concentration
Correct Incorrect Correct answer

cooling efficiency
Correct Incorrect Correct answer

coil efficiency
Correct Incorrect Correct answer

bypass factor
Correct Incorrect Correct answer

Correct

Incorrect
Question 71 of 83

71. Question

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

direct condensing tower
Correct Incorrect Correct answer

evaporative cooling tower
Correct Incorrect Correct answer

indirect condensing dry cooling tower
Correct Incorrect Correct answer

atmospheric cooling tower
Correct Incorrect Correct answer

Correct

Incorrect
Question 72 of 83

72. Question

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

direct condensing tower
Correct Incorrect Correct answer

evaporative cooling tower
Correct Incorrect Correct answer

indirect condensing dry cooling tower
Correct Incorrect Correct answer

atmospheric cooling tower
Correct Incorrect Correct answer

Correct

Incorrect
Question 73 of 83

73. Question

If the heat is being removed from water, the device is known as

chiller
Correct Incorrect Correct answer

cooler
Correct Incorrect Correct answer

air conditioner
Correct Incorrect Correct answer

air cooler
Correct Incorrect Correct answer

Correct

Incorrect
Question 74 of 83

74. Question

Which of the following is the refrigerant “of choice” in uniting air conditioners?

R-22
Correct Incorrect Correct answer

R-123
Correct Incorrect Correct answer

R-ll
Correct Incorrect Correct answer

R-502
Correct Incorrect Correct answer

Correct

Incorrect
Question 75 of 83

75. Question

In new equipment, which of the following replaces R-ll?

R-12
Correct Incorrect Correct answer

R-123
Correct Incorrect Correct answer

R-502
Correct Incorrect Correct answer

R-22
Correct Incorrect Correct answer

Correct

Incorrect
Question 76 of 83

76. Question

A heat pump is almost always used when _____ of an occupied area is needed

space heating
Correct Incorrect Correct answer

dry coding
Correct Incorrect Correct answer

space cooling
Correct Incorrect Correct answer

sensible heating
Correct Incorrect Correct answer

Correct

Incorrect
Question 77 of 83

77. Question

The mass flow rate produced by the compressor is

proportional to the mass of the suction vapor that the compressor takes in at the suction inlet per unit time
Correct Incorrect Correct answer

equal to the mass of the suction vapor that the compressor takes in at the suction inlet per unit time
Correct Incorrect Correct answer

less than the mass of the suction vapor that the compressor takes in at the suction inlet per unit time
Correct Incorrect Correct answer

greater than the mass of the suction vapor that the compressor takes in at the suction inlet per unit time
Correct Incorrect Correct answer

Correct

Incorrect
Question 78 of 83

78. Question

A boiler operated at pressure not exceeding 1.055 kg/cm² gage steam, or water temperature no exceeding 121°C.

Low pressure heating
Correct Incorrect Correct answer

Hot water supply boiler
Correct Incorrect Correct answer

Miniature boiler
Correct Incorrect Correct answer

Power boiler
Correct Incorrect Correct answer

Correct

Incorrect
Question 79 of 83

79. Question

No part of the steam generator should be closer than how many meters from the wall?

3 m
Correct Incorrect Correct answer

1 m
Correct Incorrect Correct answer

4 m
Correct Incorrect Correct answer

5 m
Correct Incorrect Correct answer

Correct

Incorrect
Question 80 of 83

80. Question

Steam generators should be mounted over a suitable foundation or concrete pad of not less than 305 mm thick and with sufficient area at base to be supported by the bearing capacity of the soil with a safety factor of

4
Correct Incorrect Correct answer

not more than 4
Correct Incorrect Correct answer

not less than 4
Correct Incorrect Correct answer

less than or equal to 4
Correct Incorrect Correct answer

Correct

Incorrect
Question 81 of 83

81. Question

When feeding hot water, feedpump should at least be how many millimeters below hotwell to prevent vapor lock.

1,220 mm
Correct Incorrect Correct answer

1,000 mm
Correct Incorrect Correct answer

2,120 mm
Correct Incorrect Correct answer

2,000 mm
Correct Incorrect Correct answer

Correct

Incorrect
Question 82 of 83

82. Question

How many check valves should be provided between any feedpump and boiler?

1
Correct Incorrect Correct answer

2
Correct Incorrect Correct answer

3
Correct Incorrect Correct answer

4
Correct Incorrect Correct answer

Correct

Incorrect
Question 83 of 83

83. Question

Blow-off tanks hereafter installed, if of metal shall have a plate thickness of not less than 8 mm diameter and shall be designed for a minimum working pressure of

1 MPa
Correct Incorrect Correct answer

0.5 MPa
Correct Incorrect Correct answer

0.675 MPa
Correct Incorrect Correct answer

0.345 MPa
Correct Incorrect Correct answer

Correct

Incorrect

[PIPE] Question Bank for Advanced Coaching Series | Set 1 – Elements | Part 5

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