In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Slightly less than 45 mm

45 mm

95 mm

Slightly more than 45 mm

Slightly less than 45 mm

45 mm

95 mm

Slightly more than 45 mm

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Theory of Machine
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

Unaffected of sensitivity

More sensitive

Isochronous

Less sensitive

Unaffected of sensitivity

More sensitive

Isochronous

Less sensitive

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Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

2π. √(g/δ)

2π. √(δ/g)

1/2π. √(δ/g)

1/2π. √(g/δ)

2π. √(g/δ)

2π. √(δ/g)

1/2π. √(δ/g)

1/2π. √(g/δ)

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Theory of Machine
The factor which affects the critical speed of a shaft is

All of the listed here

Eccentricity

Span of shaft

Diameter of disc

All of the listed here

Eccentricity

Span of shaft

Diameter of disc

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Theory of Machine
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Governor A is more sensitive than governor B

Both governors A and B are equally sensitive

None of these

Governor B is more sensitive than governor A

Governor A is more sensitive than governor B

Both governors A and B are equally sensitive

None of these

Governor B is more sensitive than governor A

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Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

At 45° to line as per (A)

Perpendicular to line as per (A)

Not possible to determine with these data

Joining the corresponding points

At 45° to line as per (A)

Perpendicular to line as per (A)

Not possible to determine with these data

Joining the corresponding points

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Theory of Machine

Theory of Machine In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Theory of Machine In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

Theory of Machine One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

Theory of Machine The factor which affects the critical speed of a shaft is

Theory of Machine For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Theory of Machine The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Theory of Machine
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

Theory of Machine
The factor which affects the critical speed of a shaft is

Theory of Machine
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line