241. The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is
✅ The correct answer is option C.
Engineering Mechanics MCQs
242. The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is
2mr2/3
2mr2/5
7mr2/3
7mr2/5
✅ The correct answer is option D.
243. The time taken by a particle for one complete oscillation is known as periodic time.
Agree
Disagree
✅ The correct answer is option A.
245. The power developed by a body acted upon by a torque T newton metre (N – m) and revolving at ω radian/s is given by
T.ω (in watts)
T.ω/60 (in watts)
T.ω/75 (in kilowatts)
T.ω/4500 (in kilowatts
✅ The correct answer is option A.
246. In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively
(tensile) and 2W (compressive)
2W(tensile) and (compressive)
(tensile) and (compressive)
none of the above
✅ The correct answer is option A.
247. In actual machines, mechanical advantage is __________ velocity ratio.
equal to
less than
greater than
✅ The correct answer is option B.
248. The linear velocity of a body rotating at ω rad / s along a circular path of radius r is given by
ω/r
ω.r
ω2/r
ω2.r
✅ The correct answer is option B.
249. The force which acts along the radius of a circle and directed towards the centre of the circle is known as centripetal force.
TRUE
FALSE
✅ The correct answer is option A.
250. Varingon’s theorem of moments states that if a number of coplaner forces acting on a particle are in equilibrium, then
their algebraic sum is zero
their lines of action are at equal distances
the algebraic sum of their moments about any point in their plane is zero
the algebraic sum of t
✅ The correct answer is option D.