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Theory of Machine

Theory of Machine
The brake commonly used in railway trains is

Shoe brake
Band and block brake
Band brake
Internal expanding brake

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Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

Only linear acceleration
Both linear and angular acceleration
No acceleration
Only angular acceleration

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Theory of Machine
Length of arc of contact is given by

Arc of approach - Arc of recess
Arc of approach / Arc of recess
Arc of approach + Arc of recess
Arc of approach × Arc of recess

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Theory of Machine
To connect two parallel and coplanar shafts the following type of gearing is used

Spiral gear
Bevel gear
Spur gear
None of the listed here

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Theory of Machine
Which type of gearing is used in steering system of an automobile?

Worm and wheel
Rack and pinion
None of the listed here
Spiral gears

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Theory of Machine
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to

0.2
0.4
0.8
0.6

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