Lower pairs are those which have

Theory of Machine
Lower pairs are those which have

Point or line contact between the two elements when in motion

Two elements that permit relative motion

Elements of pairs not held together mechanically

Surface contact between the two elements when in motion

Point or line contact between the two elements when in motion

Two elements that permit relative motion

Elements of pairs not held together mechanically

Surface contact between the two elements when in motion

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Theory of Machine
In a reciprocating steam engine, which of the following forms a kinematic link?

Crankshaft and flywheel

Flywheel and engine frame

Cylinder and piston

Piston rod and connecting rod

Crankshaft and flywheel

Flywheel and engine frame

Cylinder and piston

Piston rod and connecting rod

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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) cosφ]/2

[(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

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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

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

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 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

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

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
The sense of Coriolis component is such that it

Leads the sliding velocity vector by 90°

Leads the sliding velocity vector by 180°

Is along the sliding velocity vector

Lags the sliding velocity vector by 90°

Leads the sliding velocity vector by 90°

Leads the sliding velocity vector by 180°

Is along the sliding velocity vector

Lags the sliding velocity vector by 90°

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Theory of Machine
The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the

Prime circle

Base circle

Pitch curve

Pitch circle

Prime circle

Base circle

Pitch curve

Pitch circle

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Theory of Machine

Theory of Machine Lower pairs are those which have

Theory of Machine In a reciprocating steam engine, which of the following forms a kinematic link?

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

Theory of Machine The sense of Coriolis component is such that it

Theory of Machine The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the

Theory of Machine
Lower pairs are those which have

Theory of Machine
In a reciprocating steam engine, which of the following forms a kinematic link?

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

Theory of Machine
The sense of Coriolis component is such that it

Theory of Machine
The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the