The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Increase

Remain unaffected

Decrease

May increase or decrease depending on the type of refrigerant used

Increase

Remain unaffected

Decrease

May increase or decrease depending on the type of refrigerant used

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Refrigeration and Air Conditioning
Critical temperature is the temperature above which

A gas will immediately liquefy

A gas will never liquefy

Water will evaporate

Water will never evaporate

A gas will immediately liquefy

A gas will never liquefy

Water will evaporate

Water will never evaporate

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

Same

Less

More

None of these

Same

Less

More

None of these

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Refrigeration and Air Conditioning
The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process)

(h1 - h2)/ (hA - h2)

(hA - h1)/ (h2 - h1)

(h2 - hA)/ (h1 - h2)

(hA - h2)/ (h1 - h2)

(h1 - h2)/ (hA - h2)

(hA - h1)/ (h2 - h1)

(h2 - hA)/ (h1 - h2)

(hA - h2)/ (h1 - h2)

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Wet vapour

Dry saturated vapour

Saturated liquid

Superheated vapour

Wet vapour

Dry saturated vapour

Saturated liquid

Superheated vapour

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Refrigeration and Air Conditioning
A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

Difference of (A) and (B)

Sum of (A) and (B)

Heat dissipated to the surroundings

Heat stored in the human body

Difference of (A) and (B)

Sum of (A) and (B)

Heat dissipated to the surroundings

Heat stored in the human body

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Refrigeration and Air Conditioning Critical temperature is the temperature above which

Refrigeration and Air Conditioning The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

Refrigeration and Air Conditioning The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process)

Refrigeration and Air Conditioning In a vapour compression system, the condition of refrigerant before passing through the condenser is

Refrigeration and Air Conditioning A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Refrigeration and Air Conditioning
Critical temperature is the temperature above which

Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

Refrigeration and Air Conditioning
The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process)

Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Refrigeration and Air Conditioning
A human body feels comfortable when the heat produced by the metabolism of human body is equal to the