31. The taper on cotter varies from
1 in l5 to 1 in 10
1 in 24 to 1 in 20
1 in 32 to 1 in 24
1 in 48 to 1 in 24
✅ The correct answer is option D.
Machine Design MCQs
32. An universal coupling is used to connect two shafts
which are perfectly aligned
which are not in exact alignment
have lateral misalignment
whose axes intersect a
✅ The correct answer is option D.
33. A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
sunk key
flat saddle key
hollow saddle key
tangent key
✅ The correct answer is option A.
34. When two non-parallel or intersecting but coplaner shafts are connected by gears, the arrangement is known as bevel gearing.
Correct
Incorrect
✅ The correct answer is option A.
35. When the top of a tooth undercuts the root on the mating gear, it is known as interference.
Yes
No
✅ The correct answer is option A.
37. The contact ratio for gears is
zero
less than one
greater than one
none of these
✅ The correct answer is option C.
39. The design of pin of a rocker arm of an I.C. engine is based on
bearing failure
shearing failure
bending failure
all of these
✅ The correct answer is option D.
40. The objective of caulking in a riveted joint is to make the joint
free from corrosion
stronger in tension
free from stress
leak-proof
✅ The correct answer is option D.