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Theory of Machine

Theory of Machine
The velocity of a body moving with simple harmonic motion is __________ at the mean position.

Maximum
None of these
Zero
Minimum

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Theory of Machine
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is

2ωv
2ωv²
ω²v
ωv

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

95 mm
Slightly less than 95 mm
45 mm
Slightly more than 95 mm

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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]

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

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

vBA × AB
v²BA
vBA /AB
v²BA /AB

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Theory of Machine
The minimum periodic time of a compound pendulum is

(1/2π). √(2kG/g)
2π. √(2kG/g)
2π. √(kG/g)
(1/2π). √(kG/g)

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