The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at

Theory of Machine
The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at

The point of contact

The center of the disc

An infinite distance on the plane surface

The point on the circumference situated vertically opposite to the contact point

The point of contact

The center of the disc

An infinite distance on the plane surface

The point on the circumference situated vertically opposite to the contact point

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is

(3/4) μ W R cosecα

μ W R cosecα

(1/2) μ W R cosecα

(2/3) μ W R cosecα

(3/4) μ W R cosecα

μ W R cosecα

(1/2) μ W R cosecα

(2/3) μ W R cosecα

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Theory of Machine
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)

l₂ = kG

l₁l₂ = kG

l₁l₂ = kG²

l₁ = kG

l₂ = kG

l₁l₂ = kG

l₁l₂ = kG²

l₁ = kG

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Theory of Machine
The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

Different

Same

None of these

Unpredictable

Different

Same

None of these

Unpredictable

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Theory of Machine
The magnitude of velocities of the points on a rigid link is

Directly proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

Directly proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

Directly proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

Directly proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Turning pair

Sliding pair

Screw pair

Spherical pair

Turning pair

Sliding pair

Screw pair

Spherical pair

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Theory of Machine

Theory of Machine The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at

Theory of Machine The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is

Theory of Machine The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)

Theory of Machine The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

Theory of Machine The magnitude of velocities of the points on a rigid link is

Theory of Machine When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Theory of Machine
The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at

Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is

Theory of Machine
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)

Theory of Machine
The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

Theory of Machine
The magnitude of velocities of the points on a rigid link is

Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a