The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

Theory of Machine
The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r (sin 2θ/n)

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r sinθ

m.ω².r (sin 2θ/n)

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r sinθ

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Theory of Machine
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

None of these

The algebraic sum of the primary forces must be equal to zero

Both (A) and (B)

The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

None of these

The algebraic sum of the primary forces must be equal to zero

Both (A) and (B)

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Theory of Machine
When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

Decreases

Remains constant

None of these

Increases

Decreases

Remains constant

None of these

Increases

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Theory of Machine
Which of the following mechanism is obtained from lower pair?

Pantograph

All of these

Gyroscope

Valve and valve gears

Pantograph

All of these

Gyroscope

Valve and valve gears

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Theory of Machine
The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

Perpendicular to each other

Parallel to each other

Inclined at 45°

Opposite to each other

Perpendicular to each other

Parallel to each other

Inclined at 45°

Opposite to each other

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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

Perpendicular to PO

Along PO

At 45° to PO

None of the listed here

Perpendicular to PO

Along PO

At 45° to PO

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Theory of Machine

Theory of Machine In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

Theory of Machine When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

Theory of Machine Which of the following mechanism is obtained from lower pair?

Theory of Machine The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

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

Theory of Machine
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

Theory of Machine
When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

Theory of Machine
Which of the following mechanism is obtained from lower pair?

Theory of Machine
The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

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