1000+ Heat & Mass Transfer MCQ Questions and Answers Pdf - 1

Question: 1

The numerical value of which property of air generally drops with rising temperature

(A) thermal conductivity

(B) kinematic viscosity

(C) dynamic viscosity

(D) density

Ans: D

density

Question: 2

Planck's law of radiation is applicable to

(A) thermal radiation

(B) monochromatic radiation

(C) temperature radiation

(D) radiation of any kind

Ans: B

monochromatic radiation

Question: 3

Hygrometer is used to measure

(A) relative humidity

(B) density of liquids

(C) heat exchanged due to vapour

(D) convective heat transfer coefficient

Ans: A

relative humidity

Question: 4

A device for transferring heat from one fluid to another is known as

(A) evaporation

(B) heat exchanger

(C) conductor

(D) radiation

Ans: B

heat exchanger

Question: 5

Maximum heat transfer rate can be expected in case of

(A) counter current flow

(B) co-current flow

(C) laminar flow

(D) turbulent flow

Ans: D

turbulent flow

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