Related Questions

Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.
A Forging
B Cold rolling
C Hot rolling
D Casting
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
A Working
B Damaging
C Allowable
D None of these
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that
A Shaft B is better than shaft A
B Shaft A is better than shaft B
C Both the shafts are equally good
D None of these
A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.
A Smaller
B Greater
C Medium
D None of these
A hollow shaft of same cross-section area as compared to a solid shaft transmit
A Same torque
B Less torque
C More torque
D Unpredictable
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by
A Universal joint
B Knuckle joint
C Oldham's coupling
D Flexible coupling
According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.
A 0.5
B 2
C $$\sqrt 2 $$
D $$\sqrt {\frac{3}{2}} $$
These gears transmit power between shafts whose axes intersect at any angle:
A Worm gears
B Spur gears
C Bevel gears
D Racks
When a body is subjected to a direct tensile stress (σ) in one plane, the maximum shear stress is __________ the maximum normal stress.
A Equal to
B One-half
C Two-third
D Twice
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is $$\tau $$. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
A $$\frac{\tau }{2}$$
B $$\tau $$
C $$2\tau $$
D $$4\tau $$

Next steps