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Engineering Materials

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

Tin
Zinc
Vanadium
Sulphur

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

The average grain size is a minimum
The grain size increases very rapidly
There is no change in grain size
The grain size first increases and then decreases very rapidly

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

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

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Engineering Materials
Admiralty gun metal contains

Iron scrap and zinc
88% copper, 10% tin and rest zinc
63 to 67% nickel and 30% copper
Alloy of tin, lead and cadmium

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Engineering Materials
Pipes for bicycle frames are made of

Forged steel
Cold rolled steel
Hot rolled steel
Cast steel

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Engineering Materials
Phosphor bronze contains

2.5% phosphorous
0.5% of phosphorous
1% phosphorous
None of these

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