0.622 Pv/ (Pb - Pv)
μ/[1 - (1 - μ) (Ps/Pb)]
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
None of these
D. None of these
CO2
Freon-11
Freon-22
Air
Remains constant
Increases
Decreases
None of these
Bright green
Yellow
Red
Orange
NN = hl/k
NN = μ cp/k
NN = ρ V l /μ
NN = V²/t.cp
Pressure lines
Temperature lines
Total heat lines
Entropy lines
Zero
0.5
0.75
1.0
Heat dissipated to the surroundings
Heat stored in the human body
Sum of (A) and (B)
Difference of (A) and (B)
Strong solution to weak solution
Weak solution to strong solution
Strong solution to ammonia vapour
Ammonia vapours to weak solution
Compression
Expansion
Condensation
Evaporation
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Relative humidity
The standard unit used in refrigeration problems
The cooling effect produced by melting 1 ton of ice
The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours
The refrigeration effect to produce 1 ton of ice at NTP conditions
Humidification
Dehumidification
Heating and humidification
Cooling and dehumidification
Same
Less
More
None of these
It is not affected by the moisture present in the air
Its bulb is surrounded by a wet cloth exposed to the air
The moisture present in it begins to condense
None of the above
Constant pressure lines
Constant temperature lines
Constant total heat lines
Constant entropy lines
Same
Lower
Higher
None of these
Remains constant
Increases
Decreases
None of these
Electrically operated throttling valve
Manually operated valve
Thermostatic valve
Capillary tube
More
Less
Same
More for small capacity and less for high capacity
Equal to
Less than
More than
None of these
1/4
1/3
3
4
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
High risibility with oil
Low boiling point
Good electrical conductor
Large latent heat
Cooling
Heating
Dehumidifying
All of these
-10.5°C
-30°C
-33.3°C
-77.7°C
Constant pressure valve
Constant temperature valve
Constant superheat valve
None of these
Same
More
Less
More/less depending on rating
Remains constant
Increases
Decreases
None of these
Cooled and humidified
Cooled and dehumidified
Heated and humidified
Heated and dehumidified
One heat exchanger
Two heat exchangers
Three heat exchangers
Four heat exchangers