541. A crankshaft is a __________ shaft.
transmission
machine
✅ The correct answer is option B.
Machine Design MCQs
542. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the
head
shank
thread
middle
✅ The correct answer is option C.
544. Slenderness ratio is the ratio of
[A]. maximum size of column to minimum size of column
[B]. width of column to depth of column
[C]. effective length of column to least radius of gyration of the column
[D]. effective length of column to width of column
✅ The correct answer is option C.
545. For unequal width of butt straps, the thickness of butt straps are
[A]. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
[B]. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
[C]. 0.75 t for both the straps on the inside and outside
[D]. 0.625 t for both the straps on the inside and outside
✅ The correct answer is option A.
546. According to Unwin’s formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)
[A]. d = t
[B]. d = 1.6 t
[C]. d = 2 t
[D]. d = 6 t
✅ The correct answer is option D.
547. Which of the following material has the maximum ductility?
[A]. Mild steel
[B]. Copper
[C]. Zinc
[D]. Aluminium
✅ The correct answer is option A.
548. According to Indian standard specifications, 100 H6/g5 means that the
[A]. actual size is 100 mm
[B]. basic size is 100 mm
[C]. difference between the actual size and basic size is 100 mm
[D]. none of the above
✅ The correct answer is option B.
549. Surface endurance limit of gear material is dependent upon its
[A]. elastic strength
[B]. yield strength
[C]. brinell hardness number
[D]. toughness
✅ The correct answer is option C.
550. The centre distance between two meshing involute gears is equal to
[A].
[B].
[C].
[D].
✅ The correct answer is option A.