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Theory of Machine

Theory of Machine
The number of centers in a crank driven slider crank mechanism is

2
4
6

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Theory of Machine
A point on a link connecting double slider crank chain traces a

Hyperbola
Circle
Parabola
Ellipse

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Theory of Machine
When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

Torsional pendulum
Compound pendulum
Second's pendulum
Simple pendulum

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Theory of Machine
In order to balance the reciprocating masses,

Primary forces and couples must be balanced
Both (A) and (B)
Secondary forces and couples must be balanced
None of these

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Theory of Machine
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)

l₁l₂ = kG²
l₁l₂ = kG
l₁ = kG
l₂ = kG

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Theory of Machine
When brakes are applied to all the four wheels of a moving car, the distance traveled by the car before it is brought to rest, will be

Minimum
Maximum
Zero
None of these

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