[A]. ηS = ηB x ηN
[B]. ηS = ηB/ηN
[C]. ηS = ηN/ηB
[D]. none of these
✅ The correct answer is option A.
Mechanical Engineering MCQs
The gears are termed as medium velocity gears, if their peripheral velocity is
[A]. 1 – 3 m/s
[B]. 3 – 15 m/s
[C]. 15 – 30 m/s
[D]. 30 – 50 m/s
✅ The correct answer is option B.
A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
[A]. equal to.
[B]. less than
[C]. more than
null
✅ The correct answer is option C.
The static friction
[A]. bears a constant ratio to the normal reaction between the two surfaces
[B]. is independent of the area of contact, between the two surfaces
[C]. always acts in a direction, opposite to that in which the body tends to move
[D]. all of the above
✅ The correct answer is option D.
The coefficient of viscosity may be determined by
[A]. capillary tube method
[B]. orifice type viscometer
[C]. rotating cylinder method
[D]. all of these
✅ The correct answer is option D.
A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught.
[A]. Yes
[B]. No
null
null
✅ The correct answer is option A.
The effect of having excess camber is
[A]. excessive steering alignment torque
[B]. hard steering
[C]. too much traction
[D]. uneven tyre wear
✅ The correct answer is option D.
In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.
[A]. equal to
[B]. less than
[C]. more than
null
✅ The correct answer is option B.
A smooth cylinder lying on its convex surface remains in __________ equilibrium.
stable
unstable
neutral
✅ The correct answer is option B.
A load which is spread over a beam in such a manner that it varies uniformly over the whole length of abeam is called uniformly __________ load.
distributed
varying
✅ The correct answer is option B.