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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

All of these
Soap and water
Sulphur sticks
Halide torch

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Refrigeration and Air Conditioning
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is

Less
Same
More
More or less depending on ambient conditions

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Condenser
Expansion valve
Compressor
Evaporator

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Refrigeration and Air Conditioning
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, is called

Absolute humidity
Humidity ratio
Relative humidity
Degree of saturation

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Low side float valve
High side float valve
Thermostatic expansion valve
Automatic expansion valve

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Requires little power consumption
Gives noisy operation
Cools below 0°C
Gives quiet operation

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MORE MCQ ON Refrigeration and Air Conditioning

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