11. In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)
d + 17 mm
2 d + 13 mm
2 d + 20 mm
3.5 d
✅ The correct answer is option B.
Machine Design MCQs
12. Antifriction bearings are
thick lubricated bearings
plastic bearings
thin lubricated bearings
ball and roller bearin
✅ The correct answer is option D.
13. The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.
Yes
No
✅ The correct answer is option A.
14. The centre to centre distance between two consecutive rivets in a row, is called
margin
pitch
back pitch
diagonal pitch
✅ The correct answer is option B.
15. When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the
initial tension
external load applied
sum of the initial tension and external load applied
initial tension or ext
✅ The correct answer is option D.
16. A connecting rod subjected to an axial load may buckle with
X-axis as neutral axis
Y-axis as neutral axis
X-axis or Y-axis as neutral axis
Z-axis
✅ The correct answer is option C.
17. The design of the pressure vessel is based on
longitudinal stress
hoop stress
longitudinal and hoop stress
none of these
✅ The correct answer is option B.
18. A compound belt 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
none of the above
✅ The correct answer is option D.
19. When two helical springs of equal lengths are arranged to form a cluster spring, then
shear stress in each spring will be equal
load taken by each spring will be half the total load
all of the above
none of these
✅ The correct answer is option C.
20. A rivet is specified by
shank diameter
length of rivet
type of head
length of tail
✅ The correct answer is option A.