Agree
Disagree
✅ The correct answer is option A.
Mechanical Engineering MCQs
A two stroke cycle engine gives __________ mechanical efficiency than a four stroke cycle engine.
higher
lower
✅ The correct answer is option A.
The discharge through a channel of trapezoidal section is maximum when
width of channel at the top is equal to twice the width at the bottom
depth of channel is equal to the width at the bottom
the sloping side is equal to half the width at the top
the sloping side is eq
✅ The correct answer is option C.
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.
change
does not change
✅ The correct answer is option B.
The auto ignition in a spark ignition engine means
automatic ignition of the charge at the end of compression
ignition induced by the passage of a spark
ignition of the charge before the passage of flame front
ignition induced to su
✅ The correct answer is option C.
The fatigue stress concentration factor is defined as
the ratio of endurance limit with stress concentration to the endurance limit without stress concentration
the ratio of endurance limit without stress concentration to the endurance limit with stress concentration
the product of the endurance limits with and without stress concentration
all of the above
✅ The correct answer is option B.
The example of completely constrained motion is a
motion of a piston in the cylinder of a steam engine
motion of a square bar in a square hole
motion of a shaft with collars at each end in a circular hole
all of the above
✅ The correct answer is option D.
Spark plugs in automobiles generally have a gap between
0.3 to 0.7 mm
0.2 to 0.8 mm
0.4 to 0.9 mm
0.6 to 1.8 mm
✅ The correct answer is option D.