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Theory of Machine

Theory of Machine
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

Dedendum
Addendum
Working depth
Clearance

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Theory of Machine
Which of the following is a lower pair?

Both (A) and (B) above
Piston and cylinder
Cam and follower
Ball and socket i

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

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

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Theory of Machine
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

Machine
Structure
Compound mechanism
Inversion

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Theory of Machine
Which of the following mechanisms produces mathematically an exact straight line motion?

Peaucellier's mechanism
Tchebicheff mechanism
Watt mechanism
Grasshopper mechanism

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Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by

ω² × CO
ω² × QN
ω² × CN
ω² × NO

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