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Theory of Machine

Theory of Machine
Peaucellier’s mechanism has

Twelve links
Eight links
Four links
Six links

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Theory of Machine
Transmission of power from the engine to the rear axle of an automobile is by means of

Hooke's joint
Worm and wheel method
Compound gears
Crown gear

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Theory of Machine
In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

(S₁ + S₂) / h
(S₁ + S₂) / 2h
(S₁ - S₂) / 2h
(S₁ - S₂) / h

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Theory of Machine
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

Minimize the effect of primary forces
Minimize the effect of secondary forces
Have perfect balancing
To start the locomotive quickly

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Theory of Machine
Davis steering gear consists of

Higher pairs
Rolling pairs
Turning pairs
Sliding pairs

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Theory of Machine
A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

4 tp
tp /4
16 tp
tp /16

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MORE MCQ ON Theory of Machine

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