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Engineering Materials

Engineering Materials
A cold chisel is made of

H.S.S.
High carbon
Mild steel
Cast iron

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Engineering Materials
The silicon steel is widely used for

Generators and transformers in the form of laminated cores
Cutting tools
Motor car crankshafts
Connecting rods

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Engineering Materials
Which of the following display properties similar to that of steel?

None of these
Both (A) and (B)
Blackheart cast iron
Whiteheart cast iron

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Engineering Materials
Which of the following is used for bearing liner?

Bell metal
Gun metal
Bronze
Babbitt metal

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Engineering Materials
Which is false statement about case hardening? Case hardening is done by

Cyaniding
Nitriding
Induction hardening
Electroplating

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

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

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