1000+ Mechanical Engineering Question Bank with Answers Pdf - 2

Question: 6

Most of the energy spent in deforming a metal by cold working is

(A) consumed in developing internal stresses

(B) converted into heat

(C) utilised in overcoming deformation stresses

(D) utilised in deforming the metal

Question: 7

Which is amorphous material out of the following?

(A) glass

(B) silver

(C) lead

(D) zinc

Question: 8

Which of the following is the lighest?

(A) atom

(B) electron

(C) molecule

(D) neutron

Question: 9

Which of the following material has highest specific gravity?

(A) aluminium

(B) brass

(C) high carbon steel

(D) lead

Question: 10

Polymers

(A) can be recycled but cannot be vapourised

(B) can be vapourised but cannot be recycled

(C) can neither be vaporised nor recycled

(D) can be vaporised as well as recycled