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31.

Log mean temperature difference in case of counter flow compared to parallel flow will be

A.	same	B.	more
C.	less	D.	depends on other factors

32.

Metals are good conductors of heat because

A.	their atoms collide frequently	B.	thier atoms-are relatively far apart
C.	they contain free electrons	D.	they have high density

33.

Moisture would find its way into insulation by vapour pressure unless it is prevented by

A.	high thickness of insulation	B.	high vapour pressure
C.	less thermal conductivity insulator	D.	a vapour seal

34.

Pick up tne wrong case. Heat flowing from one side to other depends directly on

A.	face area	B.	time
C.	thickness	D.	temperature difference

35.

Temperature of steam at around 540°C canbe measured by

A.	thermometer	B.	radiatiouv pyrometer
C.	thermistor	D.	thermocouple

36.

The amount of radiation mainly depends on

A.	nature of body	B.	temperature of body
C.	type of surface of body	D.	all of the above

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