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Theory of Machine

Theory of Machine
Any point on a link connecting double slider crank chain will trace a

Straight line
Ellipse
Parabola
Circle

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Theory of Machine
Frequency of vibrations is usually expressed in

None of these
Number of cycles per second
Number of cycles per minute
Number of cycles per hour

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Theory of Machine
There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is

1/24
4/15
1/8
12

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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
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

30
20
34
10

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Theory of Machine
Which of the following disciplines provides study of relative motion between the parts of a machine?

Kinematics
Applied mechanics
Theory of machines
Mechanisms

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