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 more than 45 mm

45 mm

Slightly less than 45 mm

95 mm

Slightly more than 45 mm

45 mm

Slightly less than 45 mm

95 mm

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r + R) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

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Theory of Machine
In order to double the period of a simple pendulum, the length of the string should be

Halved

None of these

Doubled

Quadrupled

Halved

None of these

Doubled

Quadrupled

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Theory of Machine
A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively)

m₁ r₂ = m₂ r₁

None of these

m₁ m₂ = r₁ r₂

m₁ r₁ = m₂ r₂

m₁ r₂ = m₂ r₁

None of these

m₁ m₂ = r₁ r₂

m₁ r₁ = m₂ r₂

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Theory of Machine
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

Mass of cam follower linkage, spring stiffness and cam speed

Radius of circular arc, cam speed, location of centre of circular arc and roller diameter

Total lift, centre of gravity of the cam and cam speed

Total lift, total angle of lift, minimum radius of cam and cam speed

Mass of cam follower linkage, spring stiffness and cam speed

Radius of circular arc, cam speed, location of centre of circular arc and roller diameter

Total lift, centre of gravity of the cam and cam speed

Total lift, total angle of lift, minimum radius of cam and cam speed

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

All of the listed here

Eccentricity

Diameter of disc

Span of shaft

All of the listed here

Eccentricity

Diameter of disc

Span of shaft

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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 order to double the period of a simple pendulum, the length of the string should be

Theory of Machine A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively)

Theory of Machine In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

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

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 order to double the period of a simple pendulum, the length of the string should be

Theory of Machine
A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively)

Theory of Machine
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

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