it has high propulsive efficiency at high speeds
it can fly at super sonic speeds
it can fly at high elevations
it has high power for
✅ The correct answer is option D.
Mechanical Engineering MCQs
The compressive strength of cast iron is __________ that of its tensile strength.
equal to
less than
more than
✅ The correct answer is option C.
An universal coupling is used to connect two shafts
which are perfectly aligned
which are not in exact alignment
have lateral misalignment
whose axes intersect a
✅ The correct answer is option D.
When the top of a tooth undercuts the root on the mating gear, it is known as interference.
Yes
No
✅ The correct answer is option A.
The operation of making a cone-shaped enlargement of the end of a hole is known as
counter-sinking
counter-boring
trepanning
spot facing
✅ The correct answer is option A.
The red flame during the operation of a bessemer converter indicates that the
air is burning out silicon and manganese
silicon and manganese has burned out and carbon has started oxidising
converter must be tilted to remove the contents of the converter
red flame does not occ
✅ The correct answer is option D.
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
sunk key
flat saddle key
hollow saddle key
tangent key
✅ The correct answer is option A.
When a body is subjected to a direct tensile stress (σ) in one plane, the maximum shear stress is __________ the maximum normal stress.
equal to
one-half
two-third
twice
✅ The correct answer is option B.
In a wormed geared pulley block, if the number of teeth on the worm wheel is doubled, then its velocity ratio is also doubled.
TRUE
FALSE
✅ The correct answer is option A.
When two elastic bodies collide with each other,
the two bodies will momentarily come to rest after collision
the two bodies tend to compress and deform at the surface of contact
the two bodies begin to regain their original shape
all of the above
✅ The correct answer is option D.