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Objective Questions
Engineering
Mechanical
ME Set-3
Theory of Machines
64

Theory of Machines MCQ with Answers

64) A hot short metal is

brittle when cold

brittle when hot

brittle under all conditions

ductile at high temperature

Answer is:

brittle when hot

Theory of Machines MCQ with Answers

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Related Theory of Machines MCQ with Answers

65) Guest′s theory of failure is applicable for following type of materials

brittle

ductile

elastic

plastic

Answer is:

ductile

66) Rankine′s theory of failure is applicable for following type of materials

brittle

ductile

elastic

plastic

Answer is:

brittle

67) If an unsupported uniform cross sectional elastic bar is subjected to a longitudinal impact from a rigid bob moving with velocity v, then a compressive wave of intensity sc is propagated through the bar as follows

vpE

vVvF

WpE/2

IvHpE

Answer is:

vpE

68) Tensile strength of a mild steel specimen can be roughly predicted from following hardness test

Brinell

Rockwell

Vicker

Shore′s sceleroscope

Answer is:

Brinell

Theory of Machines MCQ with Answers

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