The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the anticlockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

Theory of Machine
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the anticlockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

ω₁.ω₂.r

(ω₁ + ω₂) r

(ω₁ - ω₂) 2r

(ω₁ - ω₂) r

ω₁.ω₂.r

(ω₁ + ω₂) r

(ω₁ - ω₂) 2r

(ω₁ - ω₂) r

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Theory of Machine
In a rigid link OA, velocity of 'A' w.r.t. 'O' will be

Along AO

Perpendicular to OA

Parallel to OA

At 45° to OA

Along AO

Perpendicular to OA

Parallel to OA

At 45° to OA

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Theory of Machine
In a single slider crank chain

Two are turning pairs and two are sliding pairs

Three are turning pairs and one is a sliding pair

One is a turning pair and three are sliding pairs

Each of the four pairs is a turning pair

Two are turning pairs and two are sliding pairs

Three are turning pairs and one is a sliding pair

One is a turning pair and three are sliding pairs

Each of the four pairs is a turning pair

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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

Inclined at 45°

Parallel to each other

Perpendicular to each other

Opposite to each other

Inclined at 45°

Parallel to each other

Perpendicular to each other

Opposite to each other

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Theory of Machine
The unbalanced primary forces in a reciprocating engine are

Not balanced

Balanced by secondary forces

Balanced partially

Balanced completely

Not balanced

Balanced by secondary forces

Balanced partially

Balanced completely

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Theory of Machine
When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.

Four times

Same

None of these

Two times

Four times

Same

None of these

Two times

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Theory of Machine

Theory of Machine In a rigid link OA, velocity of 'A' w.r.t. 'O' will be

Theory of Machine In a single slider crank chain

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 unbalanced primary forces in a reciprocating engine are

Theory of Machine When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.

Theory of Machine
In a rigid link OA, velocity of 'A' w.r.t. 'O' will be

Theory of Machine
In a single slider crank chain

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 unbalanced primary forces in a reciprocating engine are

Theory of Machine
When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.