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 'Refrigeration Mechanic - Apex Societies of Co-operative Sector in Kerala/ MATSYAFED ' And exam conducted in the year 2022. And Question paper code was '039/2022'. 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.
77. For unsaturated air :
(^) D.B.T is greater than W.B.T ൯ D.B.T is less than W.B.T
(೮) D.B.Tis equal to W.B.T (2) D.B.T is one-half of W.B.T
78. Damper is used in Air conditioning plant for :
(A) Controlling pressure (B) Controlling the flow of air
(C) Controlling flow of water (D) Controlling flow of refrigerant
79. The process of cooling a liquid below its saturation temperature is called :
(A) Condensation (B) Super cooling
(C) Freezing (D) Sub cooling
80. What is the cause of high suction pressure and low discharge pressure of the compresser in
ice plant?
(A) Compressor pumping is poor (B) High ambient temperature
(C) Compressor pumping is high (D) Low ambient temperature
81. What is meant by hydronic system?
(^) Pressure control system ൯) Pressure equaliser
(0) Water distribution systemin HVAC (D) Humidity control system
82. Which of the following types of filters used in the air conditioning system is made of cloth
that is discarded on getting dirty?
(A) Viscous type filters (B) Spray washers
(C) Electric precipitators ൩) Dry filter
83. Aspect ratio in rectangular duct should be kept within :
(A) 4:1 (B) 5:1
(C) 6:1 (D) 7:1
84. Which refrigerant is used in ice candy plant?
(A) Ammonia (B) R600a
( R134a (D) R22
039/2022 12 A