In a simple harmonic motion, the position of equilibrium is always Unstable Stable None of these Neutral TRUE ANSWER : ? YOUR ANSWER : ?
When two forces, each equal to P, act at 90° to each other, then the resultant will be P√2 P 2P P/√2 TRUE ANSWER : ? YOUR ANSWER : ?
A rigid body suspended vertically at a point and oscillating with a small amplitude under the action of the force of gravity, is called Simple pendulum Second's pendulum Compound pendulum None of these TRUE ANSWER : ? YOUR ANSWER : ?
Engineer's units of force, is Dyne in absolute units All listed here Newton in absolute units Newton and dyne in absolute units TRUE ANSWER : ? YOUR ANSWER : ?
The motion of a particle moving with S.H.M. from an extremity to the other, constitutes None of these Half an oscillation One full oscillation Two oscillations TRUE ANSWER : ? YOUR ANSWER : ?
The condilion for a lifting machine to be reversible is that its efficiency should be more than 50% equal to 100% less than 50% more than 66.67% TRUE ANSWER : ? YOUR ANSWER : ?
The height at which the end of a rope of length ‘l’ should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is l/√2 ¾ l 2/√3 l ½ l TRUE ANSWER : ? YOUR ANSWER : ?
The ends of a string weighing w/metre are attached to two points at the same horizontal level. If the central dip is very small, the horizontal tension of the string throughout is wl²/16d wl²/8d wl/4d wl²/4d TRUE ANSWER : ? YOUR ANSWER : ?
A particle is dropped from a height of 3 m on a horizontal floor, which has a coefficient of restitution with the ball of 1/2. The height to which the ball will rebound after striking the floor is 1.0 m 0.75 m 0.5 m 1.5 m TRUE ANSWER : ? YOUR ANSWER : ?
A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is 6 7i 8 8TC 4 TRUE ANSWER : ? YOUR ANSWER : ?