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Theory of Machine

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

Helical gear
None of these
Bevel gear
Spur gear

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Theory of Machine
The balancing of a rigid rotor can be achieved by appropriately placing balancing masses in

Three planes
Four planes
Two planes
A single plane

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Theory of Machine
In railway axle boxes, the bearing used is

Cylindrical roller bearing
Double row self aligning ball bearing
Double row spherical roller bearing
Deep groove ball bearing

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Theory of Machine
The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam)

(R - r₁) (1 - sinθ)
R (1 - sinθ)
R (1 - cosθ)
(R - r₁) (1 - cosθ)

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Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

None of these
Lead
Exhaust lap
Steam lap

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Theory of Machine
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called

Coriolis component
Radial component
None of these
Tangential component

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