50°C
100°C
175°C
275°C
✅ The correct answer is option B.
Engineering MCQs
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.
The resultant of two forces P and Q acting at an angle θ is
✅ The correct answer is option B.
The process, generally used in winter air-conditioning to warm and humidity the air, is called
humidification.
dehumidification
heating and humidification
cooling and dehumidifi
✅ The correct answer is option C.
The wave length of the radiation emitted depends only on the temperature and is independent of the material of the body.
TRUE
FALSE
✅ The correct answer is option A.
The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)
I.P/B.P.
B.P/I.P.
B.P/F.P
F.P./B.P.
✅ The correct answer is option B.