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 clockwise 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 clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

(ω₁ + ω₂)r

(ω₁ - ω₂)2r

ω₁.ω₂.r

(ω₁ - ω₂)r

(ω₁ + ω₂)r

(ω₁ - ω₂)2r

ω₁.ω₂.r

(ω₁ - ω₂)r

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Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

In machines, relative motion exists between its members, whereas same does not exist in case of structures

Machines transmit mechanical work, whereas structures transmit forces

Efficiency of machines as well as structures is below 100 %

Machines modify movement and work, whereas structures modify forces

In machines, relative motion exists between its members, whereas same does not exist in case of structures

Machines transmit mechanical work, whereas structures transmit forces

Efficiency of machines as well as structures is below 100 %

Machines modify movement and work, whereas structures modify forces

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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
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Sliding pair

Spherical pair

Rolling pair

Turning pair

Sliding pair

Spherical pair

Rolling pair

Turning pair

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Theory of Machine
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

Clearance

Working depth

Dedendum

Addendum

Clearance

Working depth

Dedendum

Addendum

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Theory of Machine
The main disadvantage of the sliding pair is that it is

Difficult to manufacture

Both (A) and (B) above

Bulky

Wears rapidly

Difficult to manufacture

Both (A) and (B) above

Bulky

Wears rapidly

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Theory of Machine

Theory of Machine Which of the following is false statement in respect of differences between machine and structure?

Theory of Machine The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Theory of Machine The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

Theory of Machine The main disadvantage of the sliding pair is that it is

Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

Theory of Machine
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Theory of Machine
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

Theory of Machine
The main disadvantage of the sliding pair is that it is