D – d
✅ The correct answer is option C.
Mechanical Engineering MCQs
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that
governor A is more sensitive than governor B
governor B is more sensitive than governor A
both governors A and B are equally sensitive
none of the above
✅ The correct answer is option A.
The sheet of water flowing over a notch or a weir is known as
sill or crest
nappe or vein
orifice
none of these
✅ The correct answer is option B.
The temperature at which the new grains are formed in the metal is known as
lower critical temperature
upper critical temperature
recrystallisation temperature
none of these
✅ The correct answer is option C.
A special case of ductility which permits materials to be rolled or hammered into thin sheets, is called
plasticity
elasticity
ductility
malleability
✅ The correct answer is option D.
Which of the following pump is successfully used for lifting water from deep wells?
Centrifugal pump
Reciprocating pump
Jet pump
Air lift pump
✅ The correct answer is option D.
The alloying element which reduces the formation of iron sulphide in steel is
chromium
nickel
vanadium
manganese
✅ The correct answer is option D.
In a simple bending theory, one of the assumption is that the plane sections before bending remain plane after bending. This assumption means that
stress is uniform throughout the beam
strain is uniform throughout the beam
stress is proportional to the distance from the neutral axis
strain is proportional
✅ The correct answer is option D.
The thickness of key is usually taken equal to one-sixth of diameter of shaft.
Yes
No
✅ The correct answer is option A.
A double overhung Pelton wheel has
two jets
two runners
four jets
four runners
✅ The correct answer is option B.