A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Theory of Machine
A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Become equal to R/4

Become equal to 2R

Remain same as before

Become equal to R/2

Become equal to R/4

Become equal to 2R

Remain same as before

Become equal to R/2

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G²

I₂/G

G².I₂

G.I₂

I₂/G²

I₂/G

G².I₂

G.I₂

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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) 2r

(ω₁ - ω₂) r

ω₁.ω₂.r

(ω₁ + ω₂) r

(ω₁ - ω₂) 2r

(ω₁ - ω₂) r

ω₁.ω₂.r

(ω₁ + ω₂) r

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Theory of Machine
The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is

4

1

3

2

4

1

3

2

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Theory of Machine
The Coriolis component of acceleration depends upon

Velocity of slider

Both (A) and (B)

Angular velocity of the link

None of these

Velocity of slider

Both (A) and (B)

Angular velocity of the link

None of these

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Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

Lead

Exhaust lap

None of these

Steam lap

Lead

Exhaust lap

None of these

Steam lap

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Theory of Machine

Theory of Machine A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

Theory of Machine The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is

Theory of Machine The Coriolis component of acceleration depends upon

Theory of Machine In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

Theory of Machine
The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is

Theory of Machine
The Coriolis component of acceleration depends upon

Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called