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Engineering Materials

Engineering Materials
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is

Chromium
Nickel
Vanadium
Cobalt

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Engineering Materials
The portion of the blast furnace below its widest cross-section is called

Throat
Hearth
Bosh
Stack

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Engineering Materials
The ability of a material to absorb energy in the plastic range is called

Creep
Fatigue strength
Resilience
Toughness

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Engineering Materials
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

Both A and B
Cementite
None of these
Free graphite

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Engineering Materials
Dislocations in materials refer to the following type of defect

Volumetric defect
Point defect
Plane defect
Line defect

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Engineering Materials
Addition of silicon to aluminium results in

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

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