Aqua ammonia is used as refrigerant in the following type of refrigeration system

In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

A

Condenser

B

Evaporator

C

Absorber

D

None of these

In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

A

Water and water

B

Water and lithium bromide

C

Ammonia and lithium bromide

D

Ammonia and water

The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

A

Is as light as possible

B

Has very high C.O.P

C

Employs minimum quantity of refrigerant

D

Consumer minimum horse power

Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)?

A

Freon

B

Liquid sulphur dioxide

C

Methyl chloride

D

Ammonia

In vapour compression refrigeration system, refrigerant occurs as liquid between

A

Condenser and expansion valve

B

Compressor and evaporator

C

Expansion valve and evaporator

D

Compressor and condenser

Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the liquid ammonia passing through the evaporator.

A

Equalize

B

Reduce

C

Increase

D

None of these

The leakage in a refrigeration system using ammonia is detected by

A

Halide torch

B

Sulphur sticks

C

Soap and water

D

All of these

Ammonia leakage in the refrigeration system is detected by

A

Sulphur stick, which on detection gives white smoke

B

Using chemical reagents

C

Its smell

D

Soap solution

Refrigeration in aeroplanes usually employs the following refrigerant

A

CO₂

B

Freon-11

C

Freon-22

D

Air

In a refrigeration cycle, the flow of refrigerant is controlled by

A

Compressor

B

Condenser

C

Evaporator

D

Expansion valve

Aqua ammonia is used as refrigerant in the following type of refrigeration system

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