In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.

Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.

Any -ve value

Zero

Any +ve value

Infinity

Any -ve value

Zero

Any +ve value

Infinity

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Theory of Machine
In a gear having involute teeth, the normal to the involute is a tangent to the

Addendum circle

Dedendum circle

Pitch circle

Base circle

Addendum circle

Dedendum circle

Pitch circle

Base circle

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Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Effects of unbalances are directly proportional to the speed

Unbalanced couples are caused only at higher speeds

Unbalanced forces are not dangerous at higher speeds

Effects of unbalances are proportional to the square of the speed

Effects of unbalances are directly proportional to the speed

Unbalanced couples are caused only at higher speeds

Unbalanced forces are not dangerous at higher speeds

Effects of unbalances are proportional to the square of the speed

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Theory of Machine
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

60°-70°

50°- 60°

70°- 80°

80°- 90°

60°-70°

50°- 60°

70°- 80°

80°- 90°

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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 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.r

(ω₁ - ω₂)r

(ω₁ - ω₂)2r

(ω₁ + ω₂)r

ω₁.ω₂.r

(ω₁ - ω₂)r

(ω₁ - ω₂)2r

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Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is

π (r₁ + r₂) + [(r₁ + r₂)²/x] + 2x

π (r₁ + r₂) + [(r₁ - r₂)²/x] + 2x

π (r₁ - r₂) + [(r₁ - r₂)²/x] + 2x

π (r₁ - r₂) + [(r₁ + r₂)²/x] + 2x

π (r₁ + r₂) + [(r₁ + r₂)²/x] + 2x

π (r₁ + r₂) + [(r₁ - r₂)²/x] + 2x

π (r₁ - r₂) + [(r₁ - r₂)²/x] + 2x

π (r₁ - r₂) + [(r₁ + r₂)²/x] + 2x

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Theory of Machine

Theory of Machine In a gear having involute teeth, the normal to the involute is a tangent to the

Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

Theory of Machine Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is

Theory of Machine
In a gear having involute teeth, the normal to the involute is a tangent to the

Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is