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Theory of Machine

Theory of Machine
The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Dedendum
Addendum
Working depth
Clearance

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Theory of Machine
A rotary internal combustion engine has __________ cylinders.

Five
Six
Four
Seven

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r² + R²) sinφ]/2
[(r + R) cosφ]/2
[(r + R) sinφ]/2
[(r² + R²) cosφ]/2

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Theory of Machine
When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

Higher pair
Force-closed pair
Self-closed pair
Lower pair

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Theory of Machine
In S.H.M., acceleration is proportional to

Velocity
Displacement
Rate of change of velocity
All of these

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Theory of Machine
When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

Torsional pendulum
Simple pendulum
Compound pendulum
Second's pendulum

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