The leaks in a refrigeration system using Freon are detected by____________________?

Refrigeration and Air Conditioning 24/10/2021

A. halide torch which on detection produces greenish flame lighting
B. sulphur sticks which on detection gives white smoke
C. using reagents
D. smelling
E. sensing reduction in pressure

Related Mcqs:

    Ammonia-absorption refrigeration cycle requires__________________?
    A. very little work input B. maximum work input C. nearly same work input as for vapour compression cycle D. zero work input E. none of the above...
    Refrigeration in aeroplanes usually employs the following refrigerant___________________?
    A. Co2 B. Freon-11 C. Freon-22 D. Air E. none of the above...
    In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?
    A. suction of compressor B. delivery of compressor C. high pressure side close to receiver D. low pressure side near receiver E. anywhere in the cycle...
    The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P_____________________?
    A. more B. less C. equally. D. unpredictable E. none of the above...
    Formation of frost on evaporator in refrigerator ________________?
    A. results in loss of heat due to poor heat transfer B. increases heat transfer rate C. is immaterial D. can be avoided by proper design E. decreases compressor power...

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