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)

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)

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r + R) sinφ]/2

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r + R) sinφ]/2

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Theory of Machine
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.

None of these

Zero

Maximum

Minimum

None of these

Zero

Maximum

Minimum

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Theory of Machine
The unbalanced force due to revolving masses

Varies in magnitude and direction both

Varies in magnitude but constant in direction

Varies in direction but constant in magnitude

Constant in magnitude and direction both

Varies in magnitude and direction both

Varies in magnitude but constant in direction

Varies in direction but constant in magnitude

Constant in magnitude and direction both

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Theory of Machine
In a radial cam, the follower moves

Along the cam axis

In a direction parallel to the cam axis

In a direction perpendicular to the cam axis

In any direction irrespective of the cam axis

Along the cam axis

In a direction parallel to the cam axis

In a direction perpendicular to the cam axis

In any direction irrespective of the cam axis

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Theory of Machine
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is

(1/2). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)]

(1/2). μ W cosec α (r₁ + r₂)

(2/3).μ W cosec α (r₁ + r₂)

(2/3). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)]

(1/2). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)]

(1/2). μ W cosec α (r₁ + r₂)

(2/3).μ W cosec α (r₁ + r₂)

(2/3). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)]

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Theory of Machine
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to

D₂/D₁

D₁.D₂

D₁

D₁/D₂

D₂/D₁

D₁.D₂

D₁

D₁/D₂

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Theory of Machine

Theory of Machine The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.

Theory of Machine The unbalanced force due to revolving masses

Theory of Machine In a radial cam, the follower moves

Theory of Machine The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is

Theory of Machine If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to

Theory of Machine
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.

Theory of Machine
The unbalanced force due to revolving masses

Theory of Machine
In a radial cam, the follower moves

Theory of Machine
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is

Theory of Machine
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to