Kinematic pairs are those which have two elements that

Theory of Machine
Kinematic pairs are those which have two elements that

Are held together

Have surface contact

Permit relative motion

Have line contact

Are held together

Have surface contact

Permit relative motion

Have line contact

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Theory of Machine
The cam follower generally used in aircraft engines is

Roller follower

Knife edge follower

Spherical faced follower

Flat faced follower

Roller follower

Knife edge follower

Spherical faced follower

Flat faced follower

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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)

[(r² + R²) sinφ]/2

[(r² + R²) cosφ]/2

[(r + R) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) sinφ]/2

[(r² + R²) cosφ]/2

[(r + R) sinφ]/2

[(r + R) cosφ]/2

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

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

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 parallel 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

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 parallel to the line joining the point to the instantaneous center

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Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Are in phase

Lags by 90°

Leads by 90°

Leads by 180°

Are in phase

Lags by 90°

Leads by 90°

Leads by 180°

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

μ W R

(1/2) μ W R

(3/4) μ W R

(2/3) μ W R

μ W R

(1/2) μ W R

(3/4) μ W R

(2/3) μ W R

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Theory of Machine

Theory of Machine Kinematic pairs are those which have two elements that

Theory of Machine The cam follower generally used in aircraft engines is

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

Theory of Machine In S.H.M., the velocity vector w.r.t. displacement vector

Theory of Machine The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

Theory of Machine
Kinematic pairs are those which have two elements that

Theory of Machine
The cam follower generally used in aircraft engines is

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

Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Theory of Machine
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)