25°C DBT and 100% RH
20°C DBT and 80% RH
22°C DBT and 60% RH
25°C DBT and 40% RH
C. 22°C DBT and 60% RH
Zero
20
50
100
Evaporator
Safety relief valve
Dehumidifier
Driers
CO2
Freon-11
Freon-22
Air
Inflammable
Toxic
Non-inflammable and toxic
Nontoxic and non-inflammable
Receiver
Expansion valve
Evaporator
Compressor discharge
Remains constant
Increases
Decreases
None of these
0.622 Pv / (Pb - Pv)
μ/[1 - (1 - μ) (Ps/Pb)]
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
None of these
Colourless
Odourless
Non-flammable
All of these
Suction pressure
Discharge pressure
Critical pressure
Back pressure
Horizontal line
Vertical line
Inclined line
Curved line
Saturation point of vapour
Saturation point of liquid
Sublimation temperature
Triple point
Temperature, pressure and enthalpy
Specific volume and enthalpy
Temperature and enthalpy
Temperature, pressure, specific volume and enthalpy
High pressure liquid refrigerant
Low pressure liquid and vapour refrigerant
Low pressure vapour refrigerant
None of these
Remains constant
Increases
Decreases
None of these
B.P.F. - 1
1 - B.P.F.
1/ B.P.F.
1 + B.P.F.
Remains constant
Increases
Decreases
None of these
After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the expansion valve
Mean radiant temperature
Effective temperature
Dew point temperature
None of these
Wet bulb temperature
Dry bulb temperature
Dew point temperature
None of these
Heat supplied by the gas burner to the heat absorbed by the evaporator
Heat absorbed by the evaporator to the heat supplied by the gas burner
Heat supplied by the gas burner minus the heat absorbed by the evaporator to the heat supplied by the gas burner
Heat absorbed by the evaporator minus the heat supplied by the gas burner to the heat absorbed by the evaporator
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Relative humidity
Of cooling medium
Of freezing zone
Of evaporator
At which refrigerant gas becomes liquid
Constant pressure valve
Constant temperature valve
Constant superheat valve
None of these
Suction pressure
Discharge pressure
Critical pressure
Back pressure
Constant pressure lines
Constant temperature lines
Constant total heat lines
Constant entropy lines
Bigger cabinet should be used
Smaller cabinet should be used
Perfectly tight vapour seal should be used
Refrigerant with lower evaporation temperature should be used
Reversed Carnot cycle
Reversed Otto cycle
Reversed Joule cycle
Reversed Rankine cycle
The mass of water vapour present in 1 m³ of dry air
The mass of water vapour present in 1 kg of dry air
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure.
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
Always less than unity
Always more than unity
Equal to unity
Any one of the above
A refrigerant should have low latent heat
If operating temperature of system is low, then refrigerant with low boiling point should be used
Pre-cooling and sub-cooling bf refrigerant are same
Superheat and sensible heat of a refrigerant are same