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Engineering Materials

Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Silver metal
Invar
Duralumin
Hastelloy

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Engineering Materials
Which is false statement about annealing? Annealing is done to

Soften material
Improve machining characteristic
Relieve stresses
Harden steel slightly

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Engineering Materials
The addition of which of the following improves machining of copper?

Tin
Vanadium
Sulphur
Zinc

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Engineering Materials
The molecules in a solid move

Back and forth like tiny pendulums
In circular motion
In a haphazard way
In a random manner

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Engineering Materials
Muntz metal contains copper and zinc in the ratio of

40 : 60
2.1180555555556
2.5277777777778
0.88888888888889

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Engineering Materials
Shock resisting steels should have

Low wear resistance
Low hardness
Low tensile strength
Toughness

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