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Engineering Materials

Engineering Materials
The metal suitable for bearings subjected to light loads, is

Monel metal
Phosphor bronze
White metal
Silicon bronze

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Engineering Materials
Which is false statement about properties of aluminium?

Wear resistance is very good
Fatigue strength is not high
Creep strength limits its use to fairly low temperatures
Modulus of elasticity is fairly low

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Engineering Materials
The heat treatment process used for softening hardened steel is

Carburising
Tempering
Annealing
Normalizing

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Engineering Materials
Cementite consist of

13% cementite and 87% ferrite
13% ferrite and 87% cementite
13% carbon and 87% ferrite
6.67% carbon and 93.33% 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
The machinability of steel is increased by

Sulphur, graphite and aluminium
Phosphorous and aluminium
Phosphorous, lead and sulphur
Silicon and sulphur

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