A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

Theory of Machine
A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

2 mm

2.22 mm

3.0 mm

2.50 mm

2 mm

2.22 mm

3.0 mm

2.50 mm

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Theory of Machine
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

ω² √(r² - x²)

ω² √(x² - r²)

ω √(x² - r²)

ω √(r² - x²)

ω² √(r² - x²)

ω² √(x² - r²)

ω √(x² - r²)

ω √(r² - x²)

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Theory of Machine
Kinematic pairs are those which have two elements that

Have surface contact

Have line contact

Are held together

Permit relative motion

Have surface contact

Have line contact

Are held together

Permit relative motion

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

Less

More

Same

None of these

Less

More

Same

None of these

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Theory of Machine
In a mechanism, the fixed instantaneous centers are those centers which

Vary with the configuration of the mechanism

None of the listed here

Remain in the same place for all configurations of the mechanism

Moves as the mechanism moves, but joints are of permanent nature

Vary with the configuration of the mechanism

None of the listed here

Remain in the same place for all configurations of the mechanism

Moves as the mechanism moves, but joints are of permanent nature

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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) 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

Theory of Machine The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

Theory of Machine Kinematic pairs are those which have two elements that

Theory of Machine The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

Theory of Machine In a mechanism, the fixed instantaneous centers are those centers which

Theory of Machine
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

Theory of Machine
Kinematic pairs are those which have two elements that

Theory of Machine
The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

Theory of Machine
In a mechanism, the fixed instantaneous centers are those centers which