1000+ Mechanical Engineering Question Paper Pdf Free Download - 1
Question: 1
German silver is an alloy of
(A) silver, gold and platinum
(B) silver, copper and lead
(C) silver, copper and nickel
(D) nickel, copper and zinc
Ans: D
nickel, copper and zinc
Question: 2
In flame hardening, the flame used is
(A) oxy-acetylene
(B) oil burner
(C) a wick stove
(D) gas burner
Ans: A
oxy-acetylene
Question: 3
Which of the following is the hardest material?
(A) cemented carbide
(B) diamond
(C) stainless steel
(D) high speed steel
Ans: B
diamond
Question: 4
Selenium is
(A) p-type semiconductor
(B) n-type semiconductor
(C) intrinsic semiconductor
(D) extrinsic semiconductor
Ans: B
n-type semiconductor
Question: 5
Which of the following can have positive or negative charge?
(A) neutron
(B) hole
(C) iron
(D) electron
Ans: C
iron
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