Refrigeration and Air Conditioning The cooling system used for supersonic aircrafts and rockets is Reduced ambient air cooling system Simple air cooling system Bootstrap air cooling system Regenerative air cooling system Reduced ambient air cooling system Simple air cooling system Bootstrap air cooling system Regenerative air cooling system 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 sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process) (h2 - hA)/ (h1 - h2) (h1 - h2)/ (hA - h2) (hA - h2)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h2 - hA)/ (h1 - h2) (h1 - h2)/ (hA - h2) (hA - h2)/ (h1 - h2) (hA - h1)/ (h2 - h1) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called Humidity ratio Relative humidity Absolute humidity Degree of saturation Humidity ratio Relative humidity Absolute humidity Degree of saturation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases, May be higher or lower depending upon the nature of non-condensable gases Will be higher Will remain unaffected Will be lower May be higher or lower depending upon the nature of non-condensable gases Will be higher Will remain unaffected Will be lower ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Operating the machine at lower speeds Raising the higher temperature Lowering the higher temperature Operating the machine at higher speeds Operating the machine at lower speeds Raising the higher temperature Lowering the higher temperature Operating the machine at higher speeds ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS