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Theory of Machine

Theory of Machine
The secondary unbalanced force is maximum __________ in one revolution of the crank.

Sixteen times
Four times
Eight times
Two times

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Theory of Machine
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

Inner edge
Outer edge
None of these
Corners

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Theory of Machine
Which gear is used for connecting two coplanar and intersecting shafts?

Helical gear
Spur gear
Bevel gear
None of these

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Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by

T = W.r tan(φ + α)
T = W.r tanα
T = W.r tanφ
T = W.r tan(φ - α)

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Theory of Machine
For fluctuating loads, well suited bearing is

Ball bearing
Thrust bearing
Roller bearing
Needle roller bearing

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Theory of Machine
The working depth of a gear is the radial distance from the

Pitch circle to the top of a tooth
Pitch circle to the bottom of a tooth
Top of a tooth to the bottom of a tooth
Addendum circle to the clearance circle

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