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Theory of Machine

Theory of Machine
The tendency of a body to resist change from rest or motion is known as

Resisting force
Friction
Inertia
Mass

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Theory of Machine
In a simple harmonic motion, the velocity vector with respect to displacement vector

Is in phase
Lags by 90°
Leads by 90°
Leads by 180°

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

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

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Theory of Machine
The Klein's diagram is useful to find

Displacement of various parts
Angular acceleration of various parts
Velocity of various parts
Acceleration of various parts

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Theory of Machine
Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = (ω₁ + ω₂)/2]

I.ω².CS
All of these
I.ω.(ω₁ - ω₂)
2.E.CS

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Theory of Machine
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

Flywheel
Meyer's expansion valve
Governor
D-slide valve

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