1000+ Mechanical Engineering Question Paper Pdf Free Download - 2

Question: 6

Shot peening

(A) refines the grain structure

(B) changes the crystalline structure of material

(C) causes metal surface to be in tension and the layer beneath in compression

(D) improves fatigue life of small parts

Question: 7

The amount of energy spent by the action of external force in the deforming an elastic body is known as

(A) strain energy

(B) elastic energy

(C) deformation energy

(D) work done

Question: 8

The ability of a material to absorb energy in the plastic range is known as

(A) toughness

(B) creep

(C) fatigue strength

(D) hardness

Question: 9

Lead is used for joining pipes made of

(A) asbestos cement

(B) cold iron steel

(C) cast iron

(D) concrete

Question: 10

X-rays can penetrate through

(A) paper

(B) wood

(C) lead

(D) copper