open belt drive is recommended
crossed belt drive is recommended
both open belt drive and crossed belt drive is recommended
the drive is recommend
✅ The correct answer is option B.
Mechanical Engineering MCQs
When carbon in the cast iron is in the form of cementite, the cast iron will be of white colour.
Correct
Incorrect
✅ The correct answer is option A.
Which of the following statement is correct regarding power screws?
The efficiency of a self locking screw can not be more than 50%
The efficiency of Acme (trapezoidal) thread is less than that of a square thread
If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50%
(A) and (B) Only
✅ The correct answer is option D.
The production cost per unit can be reduced by
producing more with increased inputs
producing more with the same inputs
eliminating idle time
minimising resource wa
✅ The correct answer is option B.
For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of
50°C
100°C
175°C
275°C
✅ The correct answer is option B.
The critical thickness of insulation for a sphere is
k/h0
2k/h0
h0/k
h0/2k
✅ The correct answer is option B.
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be
12
14
18
24
✅ The correct answer is option C.
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.
upward
downward
✅ The correct answer is option B.
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
double
four times
eight times
sixteen times
✅ The correct answer is option D.