The low-side gauge is called:
A) A cold gauge. B) A high-pressure gauge.
C) A vacuum gauge. D) A compound gauge.
[Ques. 2] A compressor that uses an impeller to throw refrigerant from the center outward is a:
A) Screw compressor. B) Centrifugal compressor.
C) Scroll compressor. D) Rotary compressor.
[Ques. 3] A compressor that uses an offset rolling piston that seals against a blade that remains stationary and moves in and out of its slot to seal against the rolling piston is a:
A) Reciprocating compressor. B) Stationary blade rotary compressor.
C) Rotary screw compressor. D) Rotary blade rotary compressor.
[Ques. 4] A solution used as a secondary refrigerant in chillers consisting of water and a chemical which lowers the water's freezing point is called:
A) Slush. B) Propylene glycol. C) Hydraulic fluid. D) Brine.
[Ques. 5] What type of compressors contain the compressor and motor together inside a welded steel housing?
A) Reciprocating B) Open compressors
C) Hermetic compressors D) Semihermetic compressors