Mechanical Engineering Questions And Answers :: Engineering Materials: part8



Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part8 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

1.DuraJomin contains

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
92.5% aluminium, 40% copper, 2% nickel, and 1.5% Mg
10% aluminium and 90% copper
90% magnesium and 9% aluminium with some copper
94% aluminium and 6% tin.

2.Aluminium bronze contains

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
10% aluminium and 90% copper
90% magnesium and 9% aluminium with some copper
10% aluminium and 90% tin.

3.Following elements have face-centred cubic structure

gamma iron (910� to 1400�C), Cu, Ag, Au, Al, Ni, Pb, Pt
Mg, Zn, Ti, Zr, Br, Cd
a iron (below 910�C and between 1400 to 1539�C), W
all of the above
none of the above.

4.Babbit metal is a

lead base alloy
tin base alloy
copper base alloy
all of the above
(a) and (c) above.

5.Neutral solution is one which has pH value

greater than 7
less than 7
equal to 7
pH value has nothing to do with neutral solution
none of the above.

More Engineering Materials QUESTIONS AND ANSWERS available in next pages

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