Mass moment of inertia of a uniform thin rod of mass M and length (l) about its mid-point and perpendicular to its length is (3/4) Ml² (2/3) Ml² (1/3) Ml² (1/12) Ml² TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.) All of these v2 = u2 + 2a.s s = u.t + ½ a.t2 v = u + a.t TRUE ANSWER : ? YOUR ANSWER : ?
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.) 2π. √(kG² + h²/gh) 2π. √(gh/kG² + h²) 1/2π. √(kG² + h²/gh) 1/2π. √(gh/kG² + h²) TRUE ANSWER : ? YOUR ANSWER : ?
When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium. Inward Outward Towards back Towards front TRUE ANSWER : ? YOUR ANSWER : ?
The forces, whose lines of action are parallel to each other and act in the same directions, are known as Like parallel forces Coplanar non-concurrent forces Unlike parallel forces Coplanar concurrent forces TRUE ANSWER : ? YOUR ANSWER : ?
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is 100 400 50 200 TRUE ANSWER : ? YOUR ANSWER : ?
In order to double the period of simple pendulum, the length of the string should be Doubled None of these Quadrupled Halved TRUE ANSWER : ? YOUR ANSWER : ?
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is D/(D - d) 2D/(D + d) D/(D + d) 2D/(D - d) TRUE ANSWER : ? YOUR ANSWER : ?
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is None of these g/2 g/4 g/3 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statement is incorrect? A machine whose efficiency is 100% is known as an ideal machine The ratio of the limiting friction to the normal reaction is called coefficient of friction The velocity ratio of a machine is the ratio of load lifted to the effort applied A force acting in the opposite direction to the motion of the body is called force of friction TRUE ANSWER : ? YOUR ANSWER : ?