Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'AC Plant Operator' And exam conducted in the year 2023. And Question paper code was '148/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
refrigeration system
A:-Vapour compression system
B:-Liquid gas refrigeration system
C:-Vapour absorption system
D:-Dry Ice refrigeration system
Correct Answer:- Option-B
Question30:-In dry ice refrigeration system, which of the following is used to cool
the materials?
A:-Solid carbon dioxide
B:-Liquid Nitrogen
C:-Ammonia
D:-Lithium Bromide solution
Correct Answer:- Option-A
Question31:-In lithium bromide absorption refrigeration system, which of the
following is used as refrigerant
A:-R134a
B:-Water
C:-Ammonia
D:-Lithium Bromide salt solution
Correct Answer:- Option-B
Question32:-Which of the following compressor has the least volumetric efficiency?
A:-Reciprocating
B:-Screw
C:-Scroll
D:-Rotary
Correct Answer:- Option-A
Question33:-Why the rotary compressors are used as a vacuum pump?
A:-No clearance volume
B:-Less noice
C:-Less power consumption
D:-Lubrication not required
Correct Answer:- Option-A
Question34:-Which of the following compressor uses whirl vein mechanism for
controlling capacity?
A:-Rotary
B:-Screw
C:-Scroll