towards the wall at its upper and
away from the wall at its upper end
downward at its upper end
upward at its upper en
✅ The correct answer is option D.
Mechanical Engineering MCQs
A jet engine has
no propeller
propeller in front
propeller at back
propeller on the top
✅ The correct answer is option A.
Standard air is the air at __________ and relative humidity of 36 percent.
0.1 bar and 20° C
1 bar and 20° C
0.1 bar and 40° C
1 bar and 40° C
✅ The correct answer is option B.
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.
equal to
less than
greater than
✅ The correct answer is option A.
Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?
Babbit metal
Monel metal
Nichrome
Phosphor bronze
✅ The correct answer is option C.
The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)
Cd x L2g [H1 – Ha]
Cd x L2g [H13/2 – Ha3/2]
Cd x L2g [H12 – Ha2]
Cd x L2g [H15/2 – Ha5
✅ The correct answer is option B.
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is
1-Feb
1
2
4
✅ The correct answer is option C.
The transfer of heat by molecular collision is smallest in
solids
liquids
gases
none of these
✅ The correct answer is option C.
During humidification process, dry bulb temperature
remains constant
increases
decreases
✅ The correct answer is option A.
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
✅ The correct answer is option B.