The dynamic friction is the friction experienced by a body, when the body None of these Is in motion Is at rest Just begins to slide over the surface of the other body TRUE ANSWER : ? YOUR ANSWER : ?
A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively) m₁ r₂ = m₂ r₁ m₁ m₂ = r₁ r₂ None of these m₁ r₁ = m₂ r₂ TRUE ANSWER : ? YOUR ANSWER : ?
In its simplest form, a cam mechanism consists of following number of links 3 2 4 1 TRUE ANSWER : ? YOUR ANSWER : ?
Two systems shall be dynamically equivalent when G. of two coincides M.I. of two about an axis through e.g. is equal All of these The mass of two are same TRUE ANSWER : ? YOUR ANSWER : ?
The axis of precession is __________ to the plane in which the axis of spin is going to rotate. Perpendicular None of these Parallel Both A and B TRUE ANSWER : ? YOUR ANSWER : ?
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because Whole of the mechanism in the Ackerman steering gear is on the back of the front wheels The Ackerman steering gear is most economical The Ackerman steering gear consists of turning pairs Both (A) and (B) TRUE ANSWER : ? YOUR ANSWER : ?
In order to double the period of a simple pendulum, the length of the string should be Quadrupled None of these Halved Doubled TRUE ANSWER : ? YOUR ANSWER : ?
The frequency of oscillation of a compound pendulum is (1/2π). √[(kG² + h²)/gh] 2π. √[gh/(kG² + h²)] 2π. √[(kG² + h²)/gh] (1/2π). √[gh/(kG² + h²)] TRUE ANSWER : ? YOUR ANSWER : ?
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is Flexible coupling Oldham's coupling Universal coupling Chain coupling TRUE ANSWER : ? YOUR ANSWER : ?
Transmission of power from the engine to the rear axle of an automobile is by means of Worm and wheel method Hooke's joint Crown gear Compound gears TRUE ANSWER : ? YOUR ANSWER : ?