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Engineering Materials

Engineering Materials
Super conduction by metals is observed in the temperature range of

Around 100°C
Below 10°K
Above 100°K
Around 0°C

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Engineering Materials
If a refractory contains high content of silicon, it means refractory is

Basic
Neutral
Brittle
Acidic

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

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

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Engineering Materials
The charge is fed into the blast furnace through the

Throat
Stack
Bosh
Tyres

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Engineering Materials
Manganese is added in low carbon steel to

Make the steel tougher and harder
All of these
Make the steel ductile and of good bending qualities
Raise the yield point

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Engineering Materials
Which is false statement about annealing? Annealing is done to

Soften material
Improve machining characteristic
Relieve stresses
Harden steel slightly

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