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Engineering Materials

Engineering Materials
The transistor is made of

Germanium
Silver
Copper
Gold

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Engineering Materials
Depth of hardness of steel is increased by addition of

Nickel
Vanadium
Chromium
Tungsten

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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.

Cementite
None of these
Both A and B
Free graphite

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Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Suddenly in a suitable cooling medium
Slowly in the furnace
Any one of these
In still air

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Engineering Materials
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

None of these
Less than
Equal to
More than

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Engineering Materials
There are fourteen atoms in a unit cell of

Body centered cubic space lattice
Close packed hexagonal space lattice
None of these
Face centered cubic space lattice

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MORE MCQ ON Engineering Materials

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