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)

[(r + R) sinφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

[(r + R) sinφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

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Theory of Machine
The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

8950/N²

8.95/N²

895/N²

89.5/N²

8950/N²

8.95/N²

895/N²

89.5/N²

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Theory of Machine
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

Transverse vibrations

Longitudinal vibrations

All of these

Torsional vibrations

Transverse vibrations

Longitudinal vibrations

All of these

Torsional vibrations

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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.

Maximum

Minimum

None of these

Zero

Maximum

Minimum

None of these

Zero

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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 secondary forces

Minimize the effect of primary forces

Have perfect balancing

To start the locomotive quickly

Minimize the effect of secondary forces

Minimize the effect of primary forces

Have perfect balancing

To start the locomotive quickly

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Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

π (r₁ - r₂) + (r₁ - r₂)²/x + 2x

π (r₁ + r₂) + (r₁ - r₂)²/x + 2x

π (r₁ + r₂) + (r₁ + r₂)²/x + 2x

π (r₁ - r₂) + (r₁ + r₂)²/x + 2x

π (r₁ - r₂) + (r₁ - r₂)²/x + 2x

π (r₁ + r₂) + (r₁ - r₂)²/x + 2x

π (r₁ + r₂) + (r₁ + r₂)²/x + 2x

π (r₁ - r₂) + (r₁ + r₂)²/x + 2x

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Theory of Machine

Theory of Machine The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

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

Theory of Machine Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

Theory of Machine
The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

Theory of Machine
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

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

Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is