1000+ Machine Design MCQ Questions and Answers - 2

Question: 6

A worm gear is generally made of

(A) aluminium

(B) cast iron

(C) forged steel

(D) mild steel

Question: 7

Dielectric strength of a material is

(A) capacity to resist flow of current

(B) capacity to withstand high voltage

(C) capacity to take variable stresses

(D) magnetic property

Question: 8

Machines screws are

(A) generally provided with head longer than that of a normal screw

(B) provided with slotted head and used with a nut

(C) screws with button head

(D) screws with rounded head

Question: 9

Which process will improve the fatigue life of apart?

(A) shot peening

(B) electroplating

(C) chemical coating

(D) electrocoating

Question: 10

The holding power of a saddle key is due to

(A) friction force

(B) torsion

(C) compressive force

(D) tensile force