Saturated liquid
Wet vapour
Dry saturated vapour
Superheated vapour
D. Superheated vapour
Ensures the evaporator completely filled with refrigerant of the load
Is suitable only for constant load systems
Maintains different temperatures in evaporator in proportion to load
None of the above
Dry air
Moist air
Saturated air
Specific humidity
A gas will never liquefy
A gas will immediately liquefy
Water will evaporate
Water will never evaporate
Noisy operation
Quiet operation
Cooling below 0°C
Very little power consumption
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
Commercial refrigerators
Domestic refrigerators
Air-conditioning
Gas liquefaction
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
Wet bulb temperature
Dry bulb temperature
Dew point temperature
None of these
Cooled and humidified
Cooled and dehumidified
Heated and humidified
Heated and dehumidified
Ammonia
Carbon dioxide
Sulphur dioxide
R-12
Very little work input
Maximum work input
Nearly same work input as for vapour compression cycle
Zero work input
Dry bulb temperature
Wet bulb temperature
Dew point temperature
Relative humidity
Humidity ratio
Relative humidity
Absolute humidity
Degree of saturation
(C.O.P.)P = (C.O.P.)R + 2
(C.O.P.)P = (C.O.P.)R + 1
(C.O.P)P = (C.O.P)R - 1
(C.O.P)P = (C.O.P)R
Kinetic theory of gases
Newton's law of gases
Dalton's law of partial pressures
Avogadro's hypothesis
Flooded
DX coil
Dry
None of these
-86.6°C
-95.2°C
-107.7°C
-135.8°C
Condenser
Evaporator
Absorber
None of these
Equal to
Less than
Greater than
None of these
CO₂
Ammonia
R-12
All of these
1.25
0.8
0.5
0.25
Does not alter C.O.P.
Increases C.O.P.
Decreases C.O.P.
None of these
NN = hl/k
NN = μ cp/k
NN = ρ V l /μ
NN = V²/t.cp
Removes heat from a low temperature body and delivers it to a high temperature body
Removes heat from a high temperature body and delivers it to a low temperature body
Rejects energy to a low temperature body
None of the above
Ammonia
Carbon dioxide
Sulphur dioxide
R-12
Rankine
Carnot
Reversed Rankine
Reversed Carnot
Same
Lower
Higher
None of these
Collect liquid refrigerant and prevent it from going to compressor
Detect liquid in vapour
Superheat the vapour
Collect vapours
Compression
Direct
Indirect
Absorption
To the left of saturated liquid line
To the right of saturated liquid line
Between the saturated liquid line and saturated vapour line
None of the above