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NYC Refrigeration Exam Questions Exam Questions and Answers
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58-Cooling tower water requires the addition of chemical additives in order to. - Answer-Reduce the formation of scale and algae 59-In the picture below describe equipment function - Answer-Remove non condensables from condenser 60-The Viscosity of lubrication oil is described by a number. A ...

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  • September 10, 2024
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  • 2024/2025
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NYC Refrigeration Exam Questions
Exam Questions and Answers
58-Cooling tower water requires the addition of chemical additives in order to. - Answer-
Reduce the formation of scale and algae

59-In the picture below describe equipment function - Answer-Remove non
condensables from condenser

60-The Viscosity of lubrication oil is described by a number. A low viscosity number
describes an oil that - Answer-Flows easily

61- The most likely reason for a refrigeration engineer to use a psychomotor is to
measure - Answer-Relative humidity level of the atmosphere

62- The most important reason to use at least 2 compressors in a cascade system is to:
- Answer-Avoid a very high compression ratio for each compressor.

63-The suction service valve of a reciprocating compressor is front seated and the
compressor run until low pressure cut-out shut the compressor off. When the machine is
stopped, the refrigeration engineer notices that suction pressure increases rapidly. The
most cause of this pressure rise: - Answer-Malfunction of a compressor valve

64- Regarding of a steam turbine, why is it advisable to keep moisture in the inlet low as
possible - Answer-Keeps turbine blades to a minimum

65-According to the attached material safety data sheet (MSDS) R-134a is? - Answer-
Clear odorless liquid vapor

66-Under normal condition, the refrigerant enters the compressor as a: - Answer-Low
press Superheated vapor and leaves as a High press vapor .

67-While operating the R-22 single acting compressor system, the refrigeration
engineer noticed oil foaming in crankcase. This condition most likely, would have been
caused by. - Answer-Sudden drop in the crankcase pressure

68-Assume the engineer is able to observe refrigerant water and oil all together. The
fluids would settle in the container top to bottom : - Answer-Oil, water, refrigerant

69-What is the function of a vacuum breaker in a steam turbine? - Answer-To achieve a
faster coast down cycle

70-An equalizer line on a TXV is used to: - Answer-Compensate for the pressure drop
across the Evap coil.

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