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)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
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because

The Ackerman steering gear is most economical

Both (A) and (B)

Whole of the mechanism in the Ackerman steering gear is on the back of the front wheels

The Ackerman steering gear consists of turning pairs

The Ackerman steering gear is most economical

Both (A) and (B)

Whole of the mechanism in the Ackerman steering gear is on the back of the front wheels

The Ackerman steering gear consists of turning pairs

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Theory of Machine
Length of arc of contact is given by

Arc of approach × Arc of recess

Arc of approach / Arc of recess

Arc of approach - Arc of recess

Arc of approach + Arc of recess

Arc of approach × Arc of recess

Arc of approach / Arc of recess

Arc of approach - Arc of recess

Arc of approach + Arc of recess

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Theory of Machine
Pitch point on a cam is

The point on cam pitch curve having the minimum pressure angle

Any point on pitch curve

The point on cam pitch curve having the maximum pressure angle

Any point on pitch circle

The point on cam pitch curve having the minimum pressure angle

Any point on pitch curve

The point on cam pitch curve having the maximum pressure angle

Any point on pitch circle

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Theory of Machine
If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

90°

360°

180°

0°

90°

360°

180°

0°

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Theory of Machine
The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

8.95/N²

895/N²

89.5/N²

8950/N²

8.95/N²

895/N²

89.5/N²

8950/N²

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Theory of Machine

Theory of Machine The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because

Theory of Machine Length of arc of contact is given by

Theory of Machine Pitch point on a cam is

Theory of Machine If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Theory of Machine The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

Theory of Machine
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because

Theory of Machine
Length of arc of contact is given by

Theory of Machine
Pitch point on a cam is

Theory of Machine
If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Theory of Machine
The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)