two
four
five
seven
✅ The correct answer is option D.
Mechanical Engineering MCQs
In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.
Yes
No
✅ The correct answer is option B.
The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
rγ – 1
1 – rγ – 1
✅ The correct answer is option C.
A diesel engine has inlet valve, fuel injection valve and exhaust valve.
Yes
No
✅ The correct answer is option A.
Dry bulb temperature is the temperature of air recorded by a thermometer, when
it is not affected by the moisture present in the air
its bulb is surrounded by a wet cloth exposed to the air
the moisture present in it begins to condense
none of the above
✅ The correct answer is option A.
Earliest finish time can be regarded as
earliest start time + duration of activity
earliest start time – duration of activity
latest finish time + duration of activity
latest finish time – d
✅ The correct answer is option A.
Threading is an operation of
smoothing and squaring the surface around a hole
sizing and finishing a small diameter hole
producing a hole by removing metal along the circumference of a hollow cutting tool
cutting helical groove
✅ The correct answer is option D.
The algebraic difference between the maximum limit and the basic size is called
actual deviation
upper deviation
lower deviation
fundamental deviation
✅ The correct answer is option B.
When the nozzle operates with the maximum mass flow, the nozzle is said to be
choked
underdamping
overdamping
none of these
✅ The correct answer is option A.
The standard length of the shaft is
5 m
6 m
7 m
all of these
✅ The correct answer is option D.