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

Question: 2

In flame hardening, the flame used is

(A) oxy-acetylene

(B) oil burner

(C) a wick stove

(D) gas burner

Question: 3

Which of the following is the hardest material?

(A) cemented carbide

(B) diamond

(C) stainless steel

(D) high speed steel

Question: 4

Selenium is

(A) p-type semiconductor

(B) n-type semiconductor

(C) intrinsic semiconductor

(D) extrinsic semiconductor

Question: 5

Which of the following can have positive or negative charge?

(A) neutron

(B) hole

(C) iron

(D) electron