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Engineering Materials

Engineering Materials
Shock resistance of steel is increased by adding

Sulphur, lead and phosphorus
Nickel
Nickel and chromium
Chromium

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Engineering Materials
Pearlite consists of

13% ferrite and 87% cementite
13% cementite and 87% ferrite
13% carbon and 87% ferrite
6.67% carbon and 93.33% iron

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Engineering Materials
Which of the following pipes is least corrosion resistant?

Cast iron
Brass
Wrought iron
Mild steel

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Engineering Materials
The crystal structure of brass is

F.C.C.
Orthorhombic crystalline structure
C.C.
H.C.P.

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Engineering Materials
Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

Monel metal
Phosphor bronze
Babbitt metal
Nichrome

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Engineering Materials
A small percentage of boron is added to steel in order to

Increase wear resistance
Increase hardenability
Reduce machinability
Increase endurance strength

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