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 Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd = Pressure at dry bulb temperature, pw = Saturation pressure corresponding to wet bulb temperature, and μ = Degree of saturation) μ/[1 - (1 - μ) (Ps/Pb)] None of these 0.622 Pv / (Pb - Pv) [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] μ/[1 - (1 - μ) (Ps/Pb)] None of these 0.622 Pv / (Pb - Pv) [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following is not a desirable property of a refrigerant? Good electrical conductor Large latent heat Low boiling point High risibility with oil Good electrical conductor Large latent heat Low boiling point High risibility with oil ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle, the condition of refrigerant is very wet vapour After passing through the expansion or throttle valve Before entering the compressor After passing through the condenser Before passing through the condenser After passing through the expansion or throttle valve Before entering the compressor After passing through the condenser Before passing through the condenser ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The condition of refrigerant as it leaves the compressor in a vapour compression system is Saturated liquid Dry saturated vapour Wet vapour Superheated vapour Saturated liquid Dry saturated vapour Wet vapour Superheated vapour ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Rating of a domestic refrigerator is of the order of 0.1 ton 5 tons 40 tons 10 tons 0.1 ton 5 tons 40 tons 10 tons ANSWER DOWNLOAD EXAMIANS APP
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