Kerala PSC Trademan Refrigeration & air Conditioning Paper 2016

Kerala Public Service Commission Trademan Refrigeration & air Conditioning Paper 2016

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One tonne of refrigeration is equal to
(a) 21 KJ/min
(b) 420 KJ/min
(c) 210 KJ/min
(d) 620 KJ/min

A water cooler is uses the refrigerant
(a) R 22
(b) R 21
(c) R 717
(d) R134

What is the angle of point of centre punch?
(a) 90 degree
(b) 60 degree
(c) 45 degree
(d) 30 degree

The switch should control the line
(a) Earth
(b) Phase
(c) Neutral
(d) Common

A compressor coupled to a motor externally is called
(a) Sealed compressor
(b) Open type compressor
(c) Semi-sealed compressor
(d) None of the above

The purpose of a filter drier is to remove
(a) Oil
(b) Gaskets
(c) Moisture
(d) Sludge

The storage capacity of a dissolved acetylene cylinder is
(a) 6.0 cubic meter
(b) 6.5 cubic meter
(c) 7.0 cubic meter
(d) 7.5 cubic meter

The heart of refrigeration system is
(a) Liquid receiver
(b) Condenser
(c) Evaporator
(d) Compressor

Velocity of measured in the units of
(a) RPM
(b) CFM
(c) Kg K sq.meter
(d) F.P.M

Colour code of ammonia refrigerant cylinder
(a) Light blue
(b) Light green
(c) Orange
(d) Silver

Identify the zeotropic refrigerant from the following
(a) R-40
(b) R407C
(c) R-22
(d) R12

Double cut file is made of
(a) Cast steel
(b) Cast iron
(c) High carbon steel
(d) Spring steel

In air-refrigeration system, the coefficient of performance is
(a) High
(b) Low
(c) very high
(d) Moderate

A low side float valve maintains the level of refrigerant in
(a) Flooded evaporator
(b) Evaporator
(c) Condenser
(d) Compressor

Stabiliser used for 1.0 TR A/C is
(a) 3 KVA
(b) 3.5 KVA
(c) 4 KVA
(d) 4.5 KVA