Q. The secondary unbalanced force is maximum __________ in one revolution of the crank.

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Q. A spring controlled governor is found unstable. It can be made stable by

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

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

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

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Q. Scotch yoke mechanism is used to generate

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Q. The unbalanced primary forces in a reciprocating engine are

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

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

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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

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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.

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

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

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Q. The swaying couple is due to the

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

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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

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

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

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

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

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