51. A connecting rod subjected to an axial load may buckle in the plane of motion of the connecting rod.
Correct
Incorrect
✅ The correct answer is option A.
Machine Design MCQs
52. The V-belt is used to transmit great amount of power and when the two pulleys are very near to each other.
Correct
Incorrect
✅ The correct answer is option A.
53. The bending moment M and a torque T is applied on a solid circular shaft. If the maximum bending stress equals to maximum shear stress developed, then M is equal to
T/2
T
2 T
4 T
✅ The correct answer is option A.
54. A fast and loose pulley drive is used when
shafts are arranged parallel and rotate in the opposite directions
shafts are arranged parallel and rotate in the same directions
shafts are arranged at right angles and rotate in one definite direction
driven shaft is to be
✅ The correct answer is option D.
55. According to Indian standard specifications, a grey cast iron designated by ‘FG 200’ means that the
carbon content is 2%
maximum compressive strength is 200 N/mm2
minimum tensile strength is 200 N/mm2
maximum shear strength
✅ The correct answer is option C.
56. In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.
intersecting
non-intersecting and non-parallel
✅ The correct answer is option B.
57. In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be
15
17
21
25
✅ The correct answer is option B.
58. According to Clavarino’s equation, the thickness of a cylinder is equal to (where d = Inner diameter of cylinder, p = Internal pressure, and μ = Poisson’s ratio. )
none of these
✅ The correct answer is option A.
59. The process which improves the machinability of steels, but lowers the hardness and tensile strength is
normalising
full annealing
process annealing
spheroidising
✅ The correct answer is option D.
60. When the frictional force helps to apply the brake, then the brake is said to be self-energizing brake.
Correct
Incorrect
✅ The correct answer is option A.