same
less
more
✅ The correct answer is option B.
Mechanical Engineering MCQs
When two pieces of different metals are to be welded by projection welding, then the projection should be made on the metal piece having __________ conductivity.
lower
higher
✅ The correct answer is option B.
The pressure at a stagnation point is always low.
Agree
Disagree
✅ The correct answer is option B.
The angular velocity (in rad / s) of a body rotating at N revolutions per minute is
πN/60
πN/180
2πN/60
2πN/180
✅ The correct answer is option C.
The efficiency of Carnot cycle depends upon
temperature limits
pressure ratio
volume compression ratio
cut-off ratio and comp
✅ The correct answer is option A.
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
equal to
one-third
two-third
three-fourth
✅ The correct answer is option C.
In a nut and bolt, the diameter at which the ridges on the bolt are in complete touch with the ridges of the corresponding nut, is called pitch diameter.
Correct
Incorrect
✅ The correct answer is option A.
Free convection flow depends on
density
coefficient of viscosity
gravitational force
all of these
✅ The correct answer is option D.
In petrol engines, using a fixed octane rating fuel, the increase in engine speed will decrease the knocking tendency.
Yes
No
✅ The correct answer is option A.
In a venturiflume, the flow takes place at
atmospheric pressure
gauge pressure
absolute pressure
none of these
✅ The correct answer is option A.