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Engineering Materials

Engineering Materials
Quenching is not necessary when hardening is done by

Any one of these
Case hardening
Nitriding
Flame hardening

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Engineering Materials
Drop forging dies contain carbon of the order of

0.25 to 0.5%
0.1 to 0.2%
0.6 to 0.7%
0.7 to 0.9%

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Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Increase
Remain same
Decrease
First increase and then decrease

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Engineering Materials
Manganese in steel increases its

Tensile strength
Ductility
Fluidity
Hardness

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Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Mainly ferrite
Pearlite and cementite
Mainly pearlite
Ferrite and pearlite

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Engineering Materials
The property of a material due to which it breaks with little permanent distortion, is called

Malleability
Brittleness
Ductility
Plasticity

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MORE MCQ ON Engineering Materials

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