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Theory of Machine

Theory of Machine
The critical speed of a shaft depends upon its

Mass and stiffness
Stiffness and eccentricity
Stiffness
Mass

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Theory of Machine
The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

cosφ - sinα = c/b
sinφ + sinα = b/c
tanφ + cotα = b/c
cotφ - cotα = c/b

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Theory of Machine
In its simplest form, a cam mechanism consists of following number of links

4
1
3
2

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Theory of Machine
Klein's construction can be used when

Crank has a uniform angular velocity
Crank has uniform angular velocity and angular acceleration
Crank has non-uniform velocity
Crank has uniform angular acceleration

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Theory of Machine
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

Kinetics
Theory of machines
Applied mechanics
Mechanisms

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r + R) cosφ]/2
[(r² + R²) cosφ]/2
[(r² + R²) sinφ]/2
[(r + R) sinφ]/2

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