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 2.33 3.33 1.33 4.33 2.33 3.33 1.33 4.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor) 1/ B.P.F. P.F. - 1 1 - B. P.F. 1 + B.P.F. 1/ B.P.F. P.F. - 1 1 - B. P.F. 1 + B.P.F. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a saturated air-water vapour mixture, the Dry bulb temperature is higher than dew point temperature Dry bulb, wet bulb and dew point temperature are same Dew point temperature is lower than wet bulb temperature Dry bulb temperature is higher than wet bulb temperature Dry bulb temperature is higher than dew point temperature Dry bulb, wet bulb and dew point temperature are same Dew point temperature is lower than wet bulb temperature Dry bulb temperature is higher than wet bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Ammonia is Toxic and non-inflammable Non-inflammable Highly toxic and inflammable Non-toxic Toxic and non-inflammable Non-inflammable Highly toxic and inflammable Non-toxic ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of High heat transfer rate Higher coefficient of performance Low temperature at high altitudes Low weight per tonne of refrigeration High heat transfer rate Higher coefficient of performance Low temperature at high altitudes Low weight per tonne of refrigeration ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The dry bulb temperature during sensible heating of air Decreases None of these Increases Remains constant Decreases None of these Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
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