327) The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called

First law of thermodynamics

Newton's law of cooling

Newton's law of heating

Stefan's law

Answer is:

Newton's law of cooling

Explanation:

The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called Newton's law of cooling.

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

328) The pressure at the inlet of a refrigerant compressor is called

suction pressure

discharge pressure

critical pressure

back pressure

Answer is:

suction pressure

329) The process, generally used in summer air conditioning to cool and dehumidify the air, is called

humidification

dehumidification

heating and humidification

cooling and dehumidification

Answer is:

cooling and dehumidification

330) The leakage in a refrigeration system using ammonia is detected by

halide torch

sulphur sticks

soap and water

all of these

Answer is:

sulphur sticks

331) The lowest temperature during the cycle in a vapour compression system occurs after

compression

expansion

condensation

evaporation

Answer is:

evaporation

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