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Theory of Machine

Theory of Machine
The relative velocity of B with respect to A in a rigid link AB is

Along AB
Perpendicular to AB
Parallel to AB
At 45° to AB

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Theory of Machine
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

ω √(r² - x²)
ω √(x² - r²)
ω² √(r² - x²)
ω² √(x² - r²)

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

Maximum
Zero
Minimum
None of these

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Theory of Machine
The C.G. of a link in any mechanism would experience

No acceleration
Linear acceleration
Angular acceleration
Both angular and linear accelerations

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Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

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

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