GATE Solved Question Papers for Mechanical Engineering Free Download - 1

Question: 1

Solar cells are made of

(A) aluminium

(B) silver

(C) germanium

(D) silicon

Ans: D

silicon

Question: 2

When pulverised fuel is not used, the equipment used for feeding coal to the boiler is

(A) stoker

(B) feedpump

(C) regenerator

(D) heater

Ans: A

stoker

Question: 3

Which of the following method can be used for heating wood?

(A) oil burner heating

(B) dielectric heating

(C) tungsten arc heating

(D) carbon arc heating

Ans: B

dielectric heating

Question: 4

The device used to generate power utilising energy of wind is called

(A) wind generator

(B) windmill

(C) aerogenerator

(D) air motor

Ans: B

windmill

Question: 5

Coal used in power plants is also known as

(A) soft coal

(B) coke

(C) steam coal

(D) charcoal

Ans: C

steam coal

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