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Theory of Machine

Theory of Machine
A cam mechanism imparts following motion

Reciprocating
All of these
Oscillating
Rotating

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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

4/15
1/8
1/24
12

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Theory of Machine
Which of the following is an example of a higher pair?

Belt and rope drive
Ball and roller bearing
Toothed gearing
All of the listed here

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

(1/2) μ W R cosecα
(2/3) μ W R cosecα
μ W R cosecα
(3/4) μ W R cosecα

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Theory of Machine
The frequency of oscillation of a compound pendulum is

(1/2π). √[(kG² + h²)/gh]
(1/2π). √[gh/(kG² + h²)]
2π. √[(kG² + h²)/gh]
2π. √[gh/(kG² + h²)]

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Theory of Machine
The relation between number of links (l) and number of joints (j) in a kinematic chain is

l = (1/2).(j + 2)
l = j + 4
l = (3/4).(j + 3)
l = (2/3).(j + 2)

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