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) cosφ]/2

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) sinφ]/2

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Theory of Machine
The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

One lower pair and two additional links

Any one of these

Two lower pairs and one additional link

Two lower pairs and two additional links

One lower pair and two additional links

Any one of these

Two lower pairs and one additional link

Two lower pairs and two additional links

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Theory of Machine
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

Flywheel

Governor

Meyer's expansion valve

D-slide valve

Flywheel

Governor

Meyer's expansion valve

D-slide valve

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Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

8

30

15

28

8

30

15

28

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Theory of Machine
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is

None of the listed here

Along PO

Perpendicular to PO

At 45° to PO

None of the listed here

Along PO

Perpendicular to PO

At 45° to PO

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Theory of Machine
The factor which affects the critical speed of a shaft is

Span of shaft

Eccentricity

Diameter of disc

All of the listed here

Span of shaft

Eccentricity

Diameter of disc

All of the listed here

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Theory of Machine

Theory of Machine The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

Theory of Machine When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

Theory of Machine What is the number of instantaneous centers for an eight link mechanism?

Theory of Machine The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is

Theory of Machine The factor which affects the critical speed of a shaft is

Theory of Machine
The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

Theory of Machine
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

Theory of Machine
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is

Theory of Machine
The factor which affects the critical speed of a shaft is