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)2r

(ω₁ + ω₂)r

ω₁.ω₂.r

(ω₁ - ω₂)r

(ω₁ - ω₂)2r

(ω₁ + ω₂)r

ω₁.ω₂.r

(ω₁ - ω₂)r

ANSWER DOWNLOAD EXAMIANS APP

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

Parallel to OA

At 45° to OA

Along AO

Perpendicular to OA

Parallel to OA

At 45° to OA

Along AO

Perpendicular to OA

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
If the damping factor for a vibrating system is unity, then the system will be

Without vibrations

Under damped

Over damped

Critically damped

Without vibrations

Under damped

Over damped

Critically damped

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The frequency of oscillation of a torsional pendulum is

2πr/k. √(g/l)

r/2πk. √(l/g)

2πk/r. √(g/l)

r/2πk. √(g/l)

2πr/k. √(g/l)

r/2πk. √(l/g)

2πk/r. √(g/l)

r/2πk. √(g/l)

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The advantage of the piston valve over the slide valve is that in the former case

Both wear and power absorbed are low

The pressure developed being high provides tight sealing

Wear is less

Power absorbed is less

Both wear and power absorbed are low

The pressure developed being high provides tight sealing

Wear is less

Power absorbed is less

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

v²BA

vBA × AB

v²BA /AB

vBA /AB

v²BA

vBA × AB

v²BA /AB

vBA /AB

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine

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

Theory of Machine If the damping factor for a vibrating system is unity, then the system will be

Theory of Machine The frequency of oscillation of a torsional pendulum is

Theory of Machine The advantage of the piston valve over the slide valve is that in the former case

Theory of Machine A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

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

Theory of Machine
If the damping factor for a vibrating system is unity, then the system will be

Theory of Machine
The frequency of oscillation of a torsional pendulum is

Theory of Machine
The advantage of the piston valve over the slide valve is that in the former case

Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)