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 distance between fixed pivots of crank and followers 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 distance between fixed pivots of crank and followers is

95 mm

Slightly more than 95 mm

45 mm

Slightly less than 95 mm

95 mm

Slightly more than 95 mm

45 mm

Slightly less than 95 mm

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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

Remain same as before

Become equal to R/4

Become equal to 2R

Become equal to R/2

Remain same as before

Become equal to R/4

Become equal to 2R

Become equal to R/2

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Theory of Machine
The Coriolis component of acceleration acts

Parallel to the sliding surface

Along the sliding surface

At 45° to the sliding surface

Perpendicular to the sliding surface

Parallel to the sliding surface

Along the sliding surface

At 45° to the sliding surface

Perpendicular to the sliding surface

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Theory of Machine
The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is

Fc = ar

Fc = ar + b

Fc = ar - b

Fc = a/r + b

Fc = ar

Fc = ar + b

Fc = ar - b

Fc = a/r + b

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Theory of Machine
The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Clearance

Working depth

Addendum

Dedendum

Clearance

Working depth

Addendum

Dedendum

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Theory of Machine
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W (cos α + μ sin α)

P = W tan α

P = W tan (α + φ)

P = W (sin α + μ cos α)

P = W (cos α + μ sin α)

P = W tan α

P = W tan (α + φ)

P = W (sin α + μ cos α)

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Theory of Machine

Theory of Machine The Coriolis component of acceleration acts

Theory of Machine The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is

Theory of Machine The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Theory of Machine A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

Theory of Machine
The Coriolis component of acceleration acts

Theory of Machine
The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is

Theory of Machine
The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Theory of Machine
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)