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Engineering Materials

Engineering Materials
Quenching is not necessary when hardening is done by

Flame hardening
Nitriding
Case hardening
Any one of these

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Engineering Materials
Which of the following property is desirable in parts subjected to shock and impact loads?

Strength
Brittleness
Stiffness
Toughness

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Engineering Materials
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio

2.1180555555556
30 : 70
40 : 60
2.9375

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Engineering Materials
The crystal structure of brass is

Orthorhombic crystalline structure
H.C.P.
C.C.
F.C.C.

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Engineering Materials
In compression, a prism of brittle material will break

By crushing into thousands of pieces
In direction perpendicular to application of load
By shearing along oblique plane
By forming a bulge

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Engineering Materials
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

None of these
Both A and B
Free graphite
Cementite

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