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

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a four bar chain or quadric cycle chain

Two are turning pairs and two are sliding pairs

One is a turning pair and three are sliding pairs

Each of the four pairs is a turning pair

Three are turning pairs and one is a sliding pair

Two are turning pairs and two are sliding pairs

One is a turning pair and three are sliding pairs

Each of the four pairs is a turning pair

Three are turning pairs and one is a sliding pair

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Sense of tangential acceleration of a link

Is opposite to that of velocity

Is perpendicular to that of velocity

Is same as that of velocity

Could be either same or opposite to velocity

Is opposite to that of velocity

Is perpendicular to that of velocity

Is same as that of velocity

Could be either same or opposite to velocity

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Idler pulley is used

All of the listed here

For applying tension

For increasing velocity ratio

For changing the direction of motion of the belt

All of the listed here

For applying tension

For increasing velocity ratio

For changing the direction of motion of the belt

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be

ω²r. n/(n - 1)

ω²r. (n + 1)/n

ω²r. (n - 1)/n

ω²r. n/(n + 1)

ω²r. n/(n - 1)

ω²r. (n + 1)/n

ω²r. (n - 1)/n

ω²r. n/(n + 1)

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The ratio of maximum fluctuation of speed to the mean speed is called

Fluctuation of speed

Maximum fluctuation of speed

Coefficient of fluctuation of speed

None of these

Fluctuation of speed

Maximum fluctuation of speed

Coefficient of fluctuation of speed

None of these

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine

Theory of Machine In a four bar chain or quadric cycle chain

Theory of Machine Sense of tangential acceleration of a link

Theory of Machine Idler pulley is used

Theory of Machine When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be

Theory of Machine The ratio of maximum fluctuation of speed to the mean speed is called

Theory of Machine
In a four bar chain or quadric cycle chain

Theory of Machine
Sense of tangential acceleration of a link

Theory of Machine
Idler pulley is used

Theory of Machine
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be

Theory of Machine
The ratio of maximum fluctuation of speed to the mean speed is called