Q. When a train is rounding a curve, the side thrust on the wheel flanges is prevented by raising the outer edge of the rail.

View solution

Q. Frequency of vibrations means the number of cycles per second.

View solution

Q. The time taken by a particle for one complete oscillation is known as periodic time.

View solution

Q. The velocity ratio of a first system of pulleys with 4 pulleys is

View solution

Q. One joule means that

View solution

Q. The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is

View solution

Q. The velocity ratio for the first system of pulleys is(where n is the number of pulleys.)

View solution

Q. The ideal angle of banking provided on the curves on roads depends upon

View solution

Q. If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.

View solution

Q. The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is

View solution

Q. The linear velocity of a body rotating at ω rad / s along a circular path of radius r is given by

View solution

Q. A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.

View solution

Q. The centre of gravity of a right angled triangle lies at its geometrical centre.

View solution

Q. Vectors method for the resultant force is also called polygon law of forces.

View solution

Q. Two equal and opposite parallel forces whose lines of action are different form a couple.

View solution

Q. When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

View solution

Q. The maximum velocity of a particle moving with simple harmonic motion is

View solution

Q. The loss of kinetic energy due to direct impact of two bodies __________ upon the value of coefficient of restitution.

View solution

Q. A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

View solution

Q. The unit of power in S.I. units is

View solution