Q. 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)

View solution

Q. Kirchhoff's law states that

View solution

Q. Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.

View solution

Q. Planck's law holds good for all coloured bodies.

View solution

Q. In mechanical refrigeration system, the refrigerant has the maximum temperature

View solution

Q. The capacity of a domestic refrigerator is in the range of

View solution

Q. The condition of refrigerant after passing through the condenser in a vapour compression system is

View solution

Q. The leakage in a refrigeration system using freon is detected by

View solution

Q. The product of Reynolds number and Prandtl number is known as

View solution

Q. Carbon dioxide is

View solution

Q. The reduced ambient air cooling system has

View solution

Q. The heat of sun reaches to us according to

View solution

Q. The specific humidity during humidification process

View solution

Q. A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

View solution

Q. A refrigerant with the highest critical pressure is

View solution

Q. In a shell and tube heat exchanger, baffles are provided on the shell side to

View solution

Q. The average value of thermal conductivity for water at 20° C saturate is about 0.51.

View solution

Q. In aqua-ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

View solution

Q. The central air conditioning system has __________ overall efficiency as compared to individual systems.

View solution

Q. The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as

View solution