Refrigeration and Air Conditioning Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere? Ammonia Sulphur dioxide Fluorine Carbon dioxide Ammonia Sulphur dioxide Fluorine Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The vapour pressure of refrigerant should be Could be anything Higher than atmospheric pressure Lower than atmospheric pressure Equal to atmospheric pressure Could be anything Higher than atmospheric pressure Lower than atmospheric pressure Equal to atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During cooling and dehumidification, dry bulb temperature Increases Decreases Remains constant None of these Increases Decreases Remains constant None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity) 25°C DBT and 40% RH 22°C DBT and 60% RH 20°C DBT and 80% RH 25°C DBT and 100% RH 25°C DBT and 40% RH 22°C DBT and 60% RH 20°C DBT and 80% RH 25°C DBT and 100% RH 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) [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] None of these 0.622 Pv / (Pb - Pv) μ/[1 - (1 - μ) (Ps/Pb)] [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] None of these 0.622 Pv / (Pb - Pv) μ/[1 - (1 - μ) (Ps/Pb)] ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The wet bulb temperature at 100% relative humidity is ________ dew point temperature. Lower than Same as None of these Higher than Lower than Same as None of these Higher than ANSWER DOWNLOAD EXAMIANS APP
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