minimise the effect of primary forces
minimise the effect of secondary forces
have perfect balancing
to start the locomotiv
✅ The correct answer is option B.
Mechanical Engineering MCQs
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by
(C.O.P.)P = (C.O.P.)R + 2
(C.O.P.)P = (C.O.P.)R + 1
(C.O.P)P = (C.O.P)R – 1
(C.O.P)P = (C.O.P)R
✅ The correct answer is option B.
When a cantilever beam is loaded at its free end, the maximum compressive stress shall develop at
bottom fibre
top fibre
neutral axis
centre of gravity
✅ The correct answer is option A.
The sensing element in the control system of nuclear reactors measure the __________ of the neutron flux in the reactor.
temperature
volume
density
none of these
✅ The correct answer is option C.
According to maximum normal stress theory, the maximum normal stress in the shaft is
✅ The correct answer is option C.
The rating of C.I. engine fuel (Diesel) is given by
octane number
performance number
cetane number
none of these
✅ The correct answer is option C.
Moment of inertia of a hollow rectangular section as shown in the below figure about Y-Y axis, is not the same as that about X-X axis.
Yes
No
✅ The correct answer is option A.
For harder alloy steel, the point angle of the drill is kept
equal to 118°
less than 118°
more than 118°
any one of these
✅ The correct answer is option C.
Otto cycle consists of
two constant volume and two isentropic processes
two constant pressure and two isentropic processes
two constant volume and two isothermal processes
one constant pressure,
✅ The correct answer is option A.
It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
Correct
Incorrect
✅ The correct answer is option A.