15%
30%
50%
70%
✅ The correct answer is option B.
Mechanical Engineering MCQs
The metal suitable for bearings subjected to heavy loads is
silicon bronze
white metal
monel metal
phosphor bronze
✅ The correct answer is option B.
Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material)
p.d.σt
p.t.σt
(p – d)σt
(p – d)t.σt
✅ The correct answer is option D.
A process, in which the gas is heated or expanded in such a way that product of its pressure and volume remains constant, is called isothermal process.
Yes
No
✅ The correct answer is option B.
The operation of cutting a sheet of metal in a straight line along the length, is known as
plunging
notching
slitting
forming
✅ The correct answer is option C.
The inertia force is equal to the accelerating force in magnitude, but opposite in direction.
Right
Wrong
✅ The correct answer is option A.
Kirchhoff’s law states that
the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature
the wave length corresponding to the maximum energy is proportional to the absolute temperature
the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body
none of the above
✅ The correct answer is option C.
A mechanism __________ for transmitting or transforming motion.
can be used
can not be used
✅ The correct answer is option A.
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl’s stress factor, and W = Axial compressive load on the spring)
✅ The correct answer is option D.