Refrigeration and Air Conditioning A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be 4.33 1.33 2.33 3.33 4.33 1.33 2.33 3.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leakage in a refrigeration system using ammonia is detected by Sulphur sticks Soap and water Halide torch All of these Sulphur sticks Soap and water Halide torch All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is Dry vapour Very wet vapour Wet vapour High pressure saturated liquid Dry vapour Very wet vapour Wet vapour High pressure saturated liquid ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative humidity lines on a psychrometric chart are Curved lines Vertical and uniformly spaced Horizontal and uniformly spaced Horizontal and non-uniformly spaced Curved lines Vertical and uniformly spaced Horizontal and uniformly spaced Horizontal and non-uniformly spaced ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by O.P)P = ( O.P.)R + 1 ( ( O.P.)P = ( O.P)P = ( ( O.P.)R + 2 O.P)R ( O.P)R - 1 O.P.)P = ( O.P)P = ( O.P.)R + 1 ( ( O.P.)P = ( O.P)P = ( ( O.P.)R + 2 O.P)R ( O.P)R - 1 O.P.)P = ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The evolution of heat of solution takes place in ammonia absorption plant when Ammonia vapour goes into solution Lithium bromide mixes with ammonia Ammonia vapour is driven out of solution Weak solution mixes with strong solution Ammonia vapour goes into solution Lithium bromide mixes with ammonia Ammonia vapour is driven out of solution Weak solution mixes with strong solution ANSWER DOWNLOAD EXAMIANS APP
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