CEPTAM Technician Refrigeration & Air Conditioning Paper

IPRC Technician Refrigeration & Air Conditioning Paper 2016

One ton of refrigeration is equal to
(a) 50 kcal/min
(b) 55 kcal/min
(c) 60 kcal/min
(d) 65 kcal/min

A perfect gas obeys –
(a) Boyle’s law
(b) Charles’s law
(c) Both of the above
(d) None of the above

The temperature of air measured by an ordinary thermometer is called
(a) Dry bulb temperature
(b) Wet Bulb temperature
(c) Saturation temperature
(d) Condensation temperature

The percentage of oxygen by volume in air is equal to
(a) 32%
(b) 23%
(c) 21%
(d) 12%

If the relative humidity of atmospheric air is 100%, the rate of evaporation of water will be
(a) High
(b) Medium
(c) Low
(d) Zero

The sum of atmospheric pressure and gauge pressure is called
(a) Normal pressure
(b) Natural pressure
(c) Total pressure
(d) Absolute pressure

The freezing temperature of water is
(a) 4 degree centigrate
(b) 1 degree centigrate
(c) 0 degree centigrate
(d) -1 degree centigrate

The refrigerant leaves the condenser of a mechanical refrigeration system as a
(a) Low pressure liquid
(b) High Pressure liquid
(c) Low pressure gas
(d) High pressure gas

Vapour absorption system make use of
(a) Mechanical Energy
(b) Electrical Energy
(c) Potential Energy
(d) Heat Energy

The complete cycle of vapour compression consists of four fundamental changes of state or processes. Which one of the following gives the correct sequence?
(a) Expansion, vapourisation, compression, condensation
(b) Expansion, compression, condensation, vapourisation
(c) Vapourisation, expansion, compression, condensation
(d) Condensation, vapourisation, Compression, expansion