Dry bulb depression
Wet bulb depression
Dew point depression
Degree of saturation
B. Wet bulb depression
Equal to
Less than
More than
None of these
Remains constant
Increases
Decreases
None of these
Equalise
Reduce
Increase
None of these
Remains constant
Increases
Decreases
None of these
0.1 to 0.3 TR
1 to 3 TR
3 to 5 TR
5 to 7 TR
Remains constant
Increases
Decreases
None of these
Water and water
Water and lithium bromide
Ammonia and lithium bromide
Ammonia and water
Ericson
Stirling
Carnot
Bell Coleman
Dry air
Moist air
Saturated air
Specific humidity
Dry bulb depression
Wet bulb depression
Dew point depression
Degree of saturation
NN = hl/k
NN = μ cp/k
NN = ρ V l /μ
NN = V²/t.cp
Commercial refrigerators
Domestic refrigerators
Air-conditioning
Gas liquefaction
Lithium bromide is used as a refrigerant and water as an absorbent
Water is used as a refrigerant and lithium bromide as an absorbent
Ammonia is used as a refrigerant and lithium bromide as an absorbent
None of the above
Constant pressure lines
Constant temperature lines
Constant total heat lines
Constant entropy lines
One cooling turbine and one heat exchanger
One cooling turbine and two heat exchangers
Two cooling turbines and one heat exchanger
Two cooling turbines and two heat exchangers
Less than 2 kg
More than or equal to 3.65 kg
More than 10 kg
There is no such consideration
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Specific humidity
25 kJ/kg
50 kJ/kg
100 kJ/kg
125 kJ/kg
After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the expansion valve
In vapour absorption refrigerator, the compression of refrigerant is avoided.
Sub-cooling can be achieved by circulating more quantity of cooling water through the condenser.
In vapour compression refrigeration, the vapour is drawn in the compressor cylinder during its suction stroke and is compressed adiabatically during the compression stroke.
All of the above
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Specific humidity
A gas will never liquefy
A gas will immediately liquefy
Water will evaporate
Water will never evaporate
Carbon dioxide
Sulphur dioxide
Lithium bromide
R-12
Equal to
Less than
Greater than
None of these
Horizontal line
Vertical line
Inclined line
Curved line
Ammonia
Carbon dioxide
Sulphur dioxide
R-12
[T₁ (T₂ - T₃)] / [T₃ (T₁ - T₂)]
[T₃ (T₁ - T₂)]/ [T₁ (T₂ - T₃)]
[T₁ (T₁ - T₂)] / [T₃ (T₂ - T₃)]
[T₃ (T₂ - T₃)] / [T₁ (T₁ - T₂)]
High
Low
Optimum
Any value
Mean radiant temperature
Effective temperature
Dew point temperature
None of these
20°C DBT and 50% RH
26°C DBT and 50% RH
20°C DBT and 60% RH
26°C DBT and 60% RH