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Engineering Materials

Engineering Materials
By severely deforming a metal in a particular direction it becomes

Ductile
Homogeneous
Malleable
Anisotropic

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Engineering Materials
Beryllium bronze contains

97.75% copper and 2.25% beryllium
99% copper and 1% beryllium
80% copper and 20% beryllium
60% copper and 40% beryllium

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Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.20 to 0.45%
0.05 to 0.20%
0.45 to 0.55%
0.55 to 1.0%

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Engineering Materials
Which of the following elements does not impart hardness to steel?

Chromium
Copper
Silicon
Nickel

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Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Mainly ferrite
Mainly pearlite
Pearlite and cementite
Ferrite and pearlite

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Engineering Materials
Which of the following has highest specific strength of all structural materials?

Titanium alloys
Chromium alloys
Magnetic steel alloys
Magnesium alloys

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