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Theory of Machine

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

Turning pair
Belt and pulley
Sliding pair
Screw pair

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Theory of Machine
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W (sin α + μ cos α)
P = W (cos α + μ sin α)
P = W tan α
P = W tan (α + φ)

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

Theory of machines
Mechanisms
Applied mechanics
Kinematics

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

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Theory of Machine
Klein's construction is useful to determine

Acceleration of various parts
Angular acceleration of various parts
Velocity of various parts
Displacement of various parts

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Theory of Machine
The sense of Coriolis component is such that it

Is along the sliding velocity vector
Leads the sliding velocity vector by 180°
Lags the sliding velocity vector by 90°
Leads the sliding velocity vector by 90°

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