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Engineering Materials

Engineering Materials
The steel widely used for motor car crankshafts is

Nickel steel
Nickel-chrome steel
Chrome steel
Silicon steel

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Engineering Materials
For the allotropic forms of iron, the points of arrest are

The points where no further change occurs
The points of discontinuity
The points where there is no further flow of metal
Constant for all metals

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Engineering Materials
A material is said to be allotropic, if it has

Fixed structure at all temperatures
Atoms distributed in random pattern
Different crystal structures at different temperatures
Any one of the above

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Engineering Materials
Basic constituents of Monel metal are

Zinc, tin, lead
Nickel, molybdenum
Nickel, copper
Nickel, lead and tin

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Engineering Materials
Eutectoid steel contains following percentage of carbon

0.0002
0.003
0.0063
0.008

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

Invar
Hastelloy
Silver metal
Duralumin

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