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Theory of Machine

Theory of Machine
Ackermann steering gear consists of

Rolling pairs
Turning pairs
Sliding pairs
Higher pairs

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Theory of Machine
A mechanism _________ for transmitting or transforming motion.

Can not be used
Unpredictable
Can be used
None of these

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Theory of Machine
The example of lower pair is

Shaft revolving in a bearing
Straight line motion mechanisms
All of these
Automobile steering gear

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Theory of Machine
A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

3.0 mm
2.22 mm
2.50 mm
2 mm

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Theory of Machine
The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

To raise the nose and dip the tail
To raise the nose and tail
To dip the nose and raise the tail
To dip the nose and tail

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Theory of Machine
When two links are connected by a pin joint, their instantaneous center lies

At the pin joint
At the center of curvature
On their point of contact
At the center of circle

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