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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

Clearance
Addendum
Dedendum
Working depth

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Theory of Machine
A reed type tachometer use the principle of

Transverse vibration
Longitudinal vibration
Torsional vibration
Damped free vibration

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Theory of Machine
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

ω² × OQ
ω² × OQ tanθ
ω² × OQ cosθ
ω² × OQ sinθ

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Theory of Machine
For fluctuating loads, well suited bearing is

Roller bearing
Needle roller bearing
Thrust bearing
Ball bearing

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Theory of Machine
If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

Four times the first one
One fourth of the first one
Same as the first one
One and a half times the first one

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Theory of Machine
The two elements of a pair are said to form a higher pair, when they

Have a line or point contact when in motion
Are kept in contact by the action of external forces, when in motion
Have a surface contact when in motion
Permit relative motion

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