1000+ GATE Chemical Engineering Heat Transfer Questions & Answers Pdf - 1

Question: 1

Which of the following has the minimum absorptivity?

(A) iron plates

(B) refractory bricks

(C) coal dust

(D) aluminium foil

Ans: D

aluminium foil

Question: 2

Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger?

(A) corrosiveness and fouling characteristics

(B) density

(C) viscosity

(D) pressure

Ans: B

density

Question: 3

In a shell and tube heat exchanger, floating head is used for

(A) less corrosion of tubes

(B) large temperature differentials

(C) high heat transfer co-efficient

(D) low pressure drop

Ans: B

large temperature differentials

Question: 4

View factor is important in heat transfer by

(A) radiation

(B) steady state conduction

(C) forced convection

(D) natural convection

Ans: A

radiation

Question: 5

Baffles are provided in heat exchangers to increase the

(A) fouling factor

(B) heat transfer rate

(C) heat transfer area

(D) heat transfer co-efficient

Ans: D

heat transfer co-efficient

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