yield stress
elastic limit stress
proof stress
ultimate stress
✅ The correct answer is option A.
Mechanical Engineering MCQs
When two metal pieces of different thicknesses are to be welded by projection welding, then the projections should be made on __________ metal piece.
thinner
thicker
✅ The correct answer is option B.
A dense structure of a grinding wheel is used for
hard materials
brittle materials
fnishing cuts
all of these
✅ The correct answer is option D.
The missing quantity per stroke is equal to
cylinder feed – indicated mass of steam
cylinder feed + indicated mass of steam
mass of cushion steam + indicated mass of steam
mass of cushion steam
✅ The correct answer is option A.
In a boot-strap air evaporative cooling system, the evaporator is provided
between the combustion chamber and the first heat exchanger
between the first heat exchanger and the secondary compressor
between the secondary compressor and the second heat exchanger
between the second hea
✅ The correct answer is option D.
The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball, and M = Mass on the sleeve)
c(m – M)g
c(m + M)g
✅ The correct answer is option B.
When the tool moves parallel to the lathe axis, the movement is termed as
cross feed
angular feed
longitudinal feed
any one of these
✅ The correct answer is option C.
The temperature at which the volume of a gas becomes zero is called
absolute scale of temperature
absolute zero temperature
absolute temperature
none of these
✅ The correct answer is option B.
The maximum shear stress is equal to the radius of Mohr’s circle.
Correct
Incorrect
✅ The correct answer is option A.
The effect of friction on the flow of steam through a nozzle is to
decrease the mass flow rate and to increase the wetness of steam
increase the mass flow rate and to increase the exit temperature
decrease the mass flow rate and to decrease the wetness of steam
increase the exit temp
✅ The correct answer is option C.