0.1 joule/s
1 joule/s
10 joules/s
100 joules/s
✅ The correct answer is option B.
Mechanical Engineering MCQs
The strain energy stored in a solid circular shaft subjected to shear stress (τ) is (where C = Modulus of rigidity for the shaft material)
x Volume of shaft
x Volume of shaft
x Volume of shaft
x Volume of shaft
✅ The correct answer is option D.
The natural gas is compressed in a CNG cylinder at a pressure of
200 bar
220 bar
250 bar
300 bar
✅ The correct answer is option A.
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the
head
shank
thread
middle
✅ The correct answer is option C.
It is necessary to maintain the valve clearances as they
reduce the resistance to sliding that occurs between the cam and the tappet
allow for lengthening of the valves owing to the heat of combustion
increase the speed at which the valves move up and down
make the crankshaft turn smoothly
✅ The correct answer is option B.
The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle.
Correct
Incorrect
✅ The correct answer is option B.
In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
Yes
No
✅ The correct answer is option A.
Manometric head, in case of a centrifugal pump, is equal to
Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
Workdone per kN of water – Losses within the impeller
Energy per kN at outlet of impeller – Energy per kN at inlet of impeller
all of the above
✅ The correct answer is option D.
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be
0.3
0.6
0.67
1.5
✅ The correct answer is option B.