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Engineering Materials

Engineering Materials
The hardness of steel increases if it contains

Austenite
Cementite
Pearlite
Martensite

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Engineering Materials
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Alloy cast iron
White cast iron
Malleable cast iron
Nodular cast iron

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

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

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

Chromium
Tungsten
Vanadium
Nickel

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Engineering Materials
The transistor is made of

Germanium
Gold
Copper
Silver

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Engineering Materials
Induction hardening is the process of

Inducing hardness by continuous process
Hardening surface of work-piece to obtain hard and wear resistant surface
Heating and cooling rapidly
Increasing hardness throughout

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MORE MCQ ON Engineering Materials

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