Does not alter C.O.P.
Increases C.O.P.
Decreases C.O.P.
None of these
B. Increases C.O.P.
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
Dry bulb depression
Wet bulb depression
Dew point depression
Degree of saturation
(td₂ - td₃)/(td₃ - td₁)
(td₃ - td₂)/(td₃ - td₁)
(td₃ - td₁)/(td₂ - td₃)
(td₃ - td₁)/(td₃ - td₂)
In evaporator
Before expansion valve
Between compressor and condenser
Between condenser and evaporator
B.P.F. - 1
1 - B. P.F.
1/ B.P.F.
1 + B.P.F.
Decrease in fin spacing and increase in number of rows
Increase in fin spacing and increase in number of rows
Increase in fin spacing and decrease in number of rows
Decrease in fin spacing and decrease in number of rows
Lower than atmospheric pressure
Higher than atmospheric pressure
Equal to atmospheric pressure
Could be anything
After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the expansion valve
Carnot cycle
Rankines cycle
Reversed Carnot cycle
None of the above
20°C DBT and 50% RH
26°C DBT and 50% RH
20°C DBT and 60% RH
26°C DBT and 60% RH
Small
High
Equal
Anything
Cost is too high
Capacity control is not possible
It is made of copper
Required pressure drop cannot be achieved
0.622 Pv/ (Pb - Pv)
μ/[1 - (1 - μ) (Ps/Pb)]
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
None of these
(Theoretical C.O.P.)/ (Actual C.O.P.)
(Actual C.O.P.) /(Theoretical C.O.P.)
(Actual C.O.P.) × (Theoretical C.O.P.)
None of these
Results in loss of heat due to poor heat transfer
Increases heat transfer rate
Is immaterial
Can be avoided by proper design
Very little work input
Maximum work input
Nearly same work input as for vapour compression cycle
Zero work input
Vertical and uniformly spaced
Horizontal and uniformly spaced
Horizontal and non-uniformly spaced
Curved lines
Compressor
Condenser
Evaporator
Expansion valve
Higher in winter than in summer
Lower in winter than in summer
Same in winter and summer
Not dependent on season
Which lies between the dry bulb and wet bulb temperatures of the incoming stream
Which lies between the wet bulb and dew point temperatures of the incoming stream
Which is lower than the dew point temperature of the incoming stream
Of adiabatic saturation of incoming stream
Colourless
Odourless
Non-flammable
All of these
Dew point temperature decreases
Wet bulb temperature decreases
Dry bulb temperature increases
All of these
Suction pressure
Discharge pressure
Critical pressure
Back pressure
Raise the pressure of the refrigerant
Raise the temperature of the refrigerant
Circulate the refrigerant through the refrigerating system
All of the above
Ericson
Stirling
Carnot
Bell Coleman
210 kJ/ min
21 kJ/ min
420 kJ/ min
840 kJ/ min
After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the compressor
Suction of compressor
Delivery of compressor
High pressure side close to receiver
Low pressure side near receiver
Humidification
Dehumidification
Heating and humidification
Cooling and dehumidification
Less than 2 kg
More than or equal to 3.65 kg
More than 10 kg
There is no such consideration