Refrigeration and Air Conditioning Objective Questions


26. The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called –

A. wet bulb temperature

B. dew point temperature

C. dry bulb temperature

D. None of these

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Click for Answer/Explanation

Correct Answer is A

27. If the energy radiated per second per sq. cm. of the surface for wavelengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called –

A. emissive power

B. emissivity

C. absorptive power

D. None of these

Click for Answer/Explanation

Correct Answer is A

28. For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is –

A. 20

B. 25

C. 50

D. 100

Click for Answer/Explanation

Correct Answer is D

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