Q. In order to have a good grip on the pulley, the V-belt should touch the bottom of the groove in the pulley.

View solution

Q. In order to double the period of a simple pendulum, the length of the string should be

View solution

Q. When a slider moves on a fixed link having curved surface, their instantaneous centre lies

View solution

Q. Scotch yoke mechanism is used to generate

View solution

Q. The unbalanced primary forces in a reciprocating engine are

View solution

Q. The balancing of a rigid rotor can be achieved by appropriately placing balancing masses in

View solution

Q. The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

View solution

Q. In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done

View solution

Q. In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the angle of advance of the eccentric but reducing the throw of the eccentric and keeping the steam lap and exhaust lap constant. This method will cause withdrawing or throttling of steam.

View solution

Q. A governor is said to be stable, if the

View solution

Q. In a Proell governor, the balls are attached to the extension of lower links.

View solution

Q. The swaying couple is due to the

View solution

Q. The lead screw of a lathe with nut forms a

View solution

Q. In under damped vibrating system, if x1 and x2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

View solution

Q. The angle of the inclined plane at which the body just begins to slide down the plane, is called helix angle.

View solution

Q. In forced vibrations, the magnitude of damping force at resonance is equal to the impressed force.

View solution

Q. The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.

View solution

Q. For static balancing of a shaft, the net dynamic force acting on the shaft is equal to zero.

View solution

Q. A spring controlled governor is said to be unstable, if the relation between the controlling force (Fc) and radius of rotation (r) is Fc = ar.

View solution

Q. The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

View solution