The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Refrigeration and Air Conditioning
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Will remain unaffected

May be higher or lower depending upon the nature of non-condensable gases

Will be lower

Will be higher

Will remain unaffected

May be higher or lower depending upon the nature of non-condensable gases

Will be lower

Will be higher

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Refrigeration and Air Conditioning
The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

Ammonia

R-12

Carbon dioxide

Sulphur dioxide

Ammonia

R-12

Carbon dioxide

Sulphur dioxide

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

Less than

None of these

Greater than

Equal to

Less than

None of these

Greater than

Equal to

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Expansion valve

Compressor

Condenser

Evaporator

Expansion valve

Compressor

Condenser

Evaporator

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Refrigeration and Air Conditioning
Which of the following statement is wrong?

None of the listed here

The space between the saturated liquid line and saturated vapour line, in a pressure enthalpy chart, is wet vapour region

The value of C.O.P. is always greater than one

In a vapour compression system, the condition of refrigerant before entering the compressor is dry saturated vapour

None of the listed here

The space between the saturated liquid line and saturated vapour line, in a pressure enthalpy chart, is wet vapour region

The value of C.O.P. is always greater than one

In a vapour compression system, the condition of refrigerant before entering the compressor is dry saturated vapour

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Wet vapour region

Superheated vapour region

None of the listed here

Sub-cooled liquid region

Wet vapour region

Superheated vapour region

None of the listed here

Sub-cooled liquid region

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Refrigeration and Air Conditioning The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

Refrigeration and Air Conditioning In a refrigerating machine, heat rejected is _________ heat absorbed.

Refrigeration and Air Conditioning In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Refrigeration and Air Conditioning Which of the following statement is wrong?

Refrigeration and Air Conditioning In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Refrigeration and Air Conditioning
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Refrigeration and Air Conditioning
The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Refrigeration and Air Conditioning
Which of the following statement is wrong?

Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents