The human body can lose heat even if its temperature is less than the atmospheric temperature.
The increase in air movement increases the evaporation from the human body.
The warm air increases the rate of radiation of heat from the human body.
Both (A) and (B)
D. Both (A) and (B)
50 kcal/ min
50 kcal/ hr
80 kcal/ min
80 kcal/ hr
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Specific humidity
Noisy operation
Quiet operation
Cooling below 0°C
Very little power consumption
Equal to
Less than
Greater than
None of these
Remains constant
Increases
Decreases
None of these
Kinetic theory of gases
Newton's law of gases
Dalton's law of partial pressures
Avogadro's hypothesis
Wet bulb temperature
Relative humidity
Dry bulb temperature
Specific humidity
Halocarbon refrigerants
Zoetrope refrigerants
Inorganic refrigerants
Hydrocarbon refrigerants
Sub-cooling or under-cooling
Super-cooling
Normal cooling
None of these
Vertical and uniformly spaced
Horizontal and uniformly spaced
Horizontal and non-uniformly spaced
Curved lines
21 kJ/min
210 kJ/min
420 kJ/min
620 kJ/min
Of cooling medium
Of freezing zone
Of evaporator
At which refrigerant gas becomes liquid
5°C
10°C
15°C
20°C
Suction pressure
Discharge pressure
Critical pressure
Back pressure
After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the compressor
Increased to a value above its critical temperature
Reduced to a value below its critical temperature
Equal to critical temperature
None of the above
Water at 0°C
Ice at 4°C
Solid and dry ice
Mixture of ice and water under equilibrium conditions
In evaporator
Before expansion valve
Between compressor and condenser
Between condenser and evaporator
Saturated liquid
Wet vapour
Dry saturated vapour
Superheated vapour
It has low operating pressures
It gives higher coefficient of performance
It is miscible with oil over large range of temperatures
All of the above
Remains constant
Increases
Decreases
None of these
Room sensible heat load only
Room latent heat load only
Both room sensible heat and latent heat loads
None of the above
It permits higher speeds to be used
It permits complete evaporation in the evaporator
It results in high volumetric and mechanical efficiency
All of the above
Receiver
Expansion valve
Evaporator
Compressor discharge
(hA - h2)/ (h1 - h2)
(h2 - hA)/ (h1 - h2)
(h1 - h2)/ (hA - h2)
(hA - h1)/ (h2 - h1)
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Specific humidity
1.33
2.33
3.33
4.33
Reduce compressor overheating
Reduce compressor discharge temperature
Increase cooling effect
Ensure that only liquid and not the vapour enters the expansion (throttling) valve
(e₁ + e₂)/ e₁ + e₂ - e₁e₂
1/e₁ + 1/e₂
e₁ + e₂
e₁e₂
Evaporator
Safety relief valve
Dehumidifier
Driers