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Engineering Materials

Engineering Materials
Which of the following alloys does not have copper as one of the constituents?

Monel metal
Nichrome
Constantan
Delta metal

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Engineering Materials
Induction hardening is basically a

None of these
Carburising process
Core hardening process
Surface hardening process

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Engineering Materials
When low carbon steel is heated up to lower critical temperature

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

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Engineering Materials
Cemented carbide tools are not found to be suitable for cutting

Aluminium
Steel
Cast iron
Brass

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Engineering Materials
Addition of copper to aluminium results in

One of the best known age and precipitation hardening systems
Improvement of corrosion resistance
Improving machinability
Improvement of casting characteristics

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Engineering Materials
When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

Equal to
Less than
None of these
More than

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