If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l + 1

l - 1

l - 2

l

l + 1

l - 1

l - 2

l

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Theory of Machine
The working depth of a gear is the radial distance from the

Pitch circle to the bottom of a tooth

Pitch circle to the top of a tooth

Top of a tooth to the bottom of a tooth

Addendum circle to the clearance circle

Pitch circle to the bottom of a tooth

Pitch circle to the top of a tooth

Top of a tooth to the bottom of a tooth

Addendum circle to the clearance circle

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Theory of Machine
The contact ratio is given by

(Length of the path of approach)/(Circular pitch)

(Length of the arc of approach)/cosφ

(Length of path of recess)/(Circular pitch)

(Length of the arc of contact)/(Circular pitch)

(Length of the path of approach)/(Circular pitch)

(Length of the arc of approach)/cosφ

(Length of path of recess)/(Circular pitch)

(Length of the arc of contact)/(Circular pitch)

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Theory of Machine
The magnitude of velocities of the points on a rigid link is

Directly proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

Directly proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

Directly proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is perpendicular to the line joining the point to the instantaneous center

Inversely proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

Directly proportional to the distance from the points to the instantaneous center and is parallel to the line joining the point to the instantaneous center

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Theory of Machine
A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when

a is +ve and b is also +ve

a = 0 and b is +ve

a is +ve and b is -ve

a is +ve and b = 0

a is +ve and b is also +ve

a = 0 and b is +ve

a is +ve and b is -ve

a is +ve and b = 0

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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

Slightly more than 95 mm

45 mm

95 mm

Slightly less than 95 mm

Slightly more than 95 mm

45 mm

95 mm

Slightly less than 95 mm

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Theory of Machine

Theory of Machine If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

Theory of Machine The working depth of a gear is the radial distance from the

Theory of Machine The contact ratio is given by

Theory of Machine The magnitude of velocities of the points on a rigid link is

Theory of Machine A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

Theory of Machine
The working depth of a gear is the radial distance from the

Theory of Machine
The contact ratio is given by

Theory of Machine
The magnitude of velocities of the points on a rigid link is

Theory of Machine
A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when