MECHANICAL ENGINEERING MCQ SECTION 11

101. The angle between plane of maximum shear and Principal plane is

(A) 30°

(B) 45°

(C) 60°

(D) 75°

Answer: - 45°

102. __________ are employed for ship building where flush surfaces are necessary.

(A) Snap head rivets

(B) Countersunk head rivets

(C) Pan head rivets

(D) Pop rivets

Answer: - Countersunk head rivets

103. A cantilever is a beam whose

(A) Both ends are fixed

(B) Both ends are free

(C) One end is fixed and other free

(D) None of these

Answer: - One end is fixed and other free

104. During tensile test, what does percentage elongation indicate?

(A) Malleability

(B) Creep

(C) Ductility

(D) Fatigue strength

Answer: - Ductility

105. The power transmittedby open belt-drive is designed on the basis of

(A) Average angle of contact of the two pulleys

(B) Angle of contact of the larger pulley

(C) Angle of contact of the smaller pulley

(D) Angle of contact of the driver pulley whether smaller or larger

Answer: - Angle of contact of the smaller pulley

106. Stress is a ________ quantity.

(A) vector

(B) scaler

(C) tensor

(D) none of these

Answer: - tensor

107. Newton’s first law of motion provides the concept of _________.

(A) momentum

(B) work

(C) inertia

(D) energy

Answer: - inertia

108. If the normal force is doubled, the coefficient of friction is _________.

(A) not changed

(B) halved

(C) doubled

(D) triple

Answer: - not changed

109. When mild steel is subjected to tensile loading, its fracture will conform to __________.

(A) granular

(B) cup & cone

(C) star

(D) none of these

Answer: - cup & cone

110.__________ governor is dead weight governor.

(A) Watt

(B) Porter

(C) Hartnell

(D) None of these

Answer: - Porter