Kerala PSC Previous Years Question Paper & Answer
Page:11
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Refrigeration Mechanic UIP' And exam conducted in the year 2023. And Question paper code was '018/2023/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.
D:-Glycol
Correct Answer:- Option-C
Question56:-What is the chemical name of R134a refrigerant ?
A:-Trifluoromethane
B:-Dichlorodifluoromethane
C:-Dichlorotrifluoromethane
D:-Tetrafluoroethane
Correct Answer:- Option-D
Question57:-What is the boiling point of isobutene refrigerant (R600a) ?
A:-—26°C
B:-22°C
C:--12°C
D:-16°C
Correct Answer:- Option-C
Question58:-What is the normal ratio of R600a and R290 refrigerant in HC blend ?
A:-50:50
B:-25:75
C:-75:25
D:-35:65
Correct Answer:- Option-A
Question59:-Which lubricant is used with R134a Refrigerant ?
A:-Mineral oil
B:-Wax oil
C:-Paraffin oil
D:-Polyol ester oil
Correct Answer:- Option-D
Question60:-Which component prevent the liquid refrigerant entering the
compressor ?
A:-Filter drier
B:-Muffler
C:-Accumulator
D:-Capillary tube
Correct Answer:- Option-C
Question61:-Which type of Vacuum pump can generate a vacuum of 20 to 50
microns ?
A:-Reciprocating