Kerala PSC Previous Years Question Paper & Answer
Page:14
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'JUNIOR INSTRUCTOR MECHANIC REFRIGERATION AND AIR CONDITIONING INDUSTRIAL TRAINING' And exam conducted in the year 2018. And Question paper code was '067/2018'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. 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.
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100.
During sensible heating of moist air, specific humidity :
(5) Increases (B) Decreases
(ಲ) Remains constant (D) None of these
The fresh air or ventilation air is a must in any comfort air conditioning system. Its purposes
are
(ಹಿ) to provide oxygen (B) to remove carbon dioxide
(ಲ) ಐ ೫೮07೦೪೮ ೦6೦೪೫5 (D) All of these
Refrigerant propane has the designation 0
(ಹ) 811 (B R134a (೦ 290 ©( 2د
The expansion device used in central AC plant is :
(ಹ) ۷ھ (8 TXV (9) Capillary tube (D) 90100016 7೩7೮
The chemical name of refrigerant R 134a is 5
(^) Propane (B) Dichloro diflouro methane
(C) Tetrafluoroethane (D) Monochlorodifluoroethane
Bourden tube is a
(5) Pressure measuring device (8) Volume measuring device
(C) Density measuring device (D) Temperature measuring device
Three TR is equivalent to of cooling effect.
(ಹ) 5 ൫ 10.5 (ध ര 5 യു 71൯7
Dry Bulb Temperature (DBT) is the actual temperature of 8
(ಹ) Dry air (B) Dryice (C) Water vapour (D) Moist air
Tools used for making external threads is :
(A) Taps (B) Die (ಲ) Thread gauge (D) Drill
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067/2018 14 A
