7000+ Mechanical Metallurgy Multiple Choice Questions and Answers - 2

Question: 6

Which of the following is liable to creep even at room temperature?

(A) Aluminium

(B) Lead

(C) Copper

(D) Low carbon steel

Question: 7

With increase of temperature, the grain size

(A) Increases

(B) Decreases

(C) Remains same

(D) May increase or decrease, depends on the metal

Question: 8

During hot working of metals

(A) Mechanical properties improve due to refinement of grain structure

(B) Porosity is almost eliminated

(C) Scale is formed on the metal surface

(D) All a, b and c

Question: 9

A/an ____ material has similar properties throughout its volume.

(A) Anisotropic

(B) Isotropic

(C) Continuous

(D) Homogenous

Question: 10

____ test measures the micro-hardness.

(A) Meyer

(B) Knoop

(C) Brinnel

(D) Rockwell