KOM Unit-3 Quiz

The size of a cam depends upon

• a) base circle

• b) pitch circle

• c) prime circle

• d) pitch curve

The angle between the direction of the follower motion and a normal to the pitch curve is called

• a) pitch angle

• b) prime angle

• c) base angle

• d) pressure angle

The cam follower generally used in automobile engines is

• a) knife edge follower

• b) flat faced follower

• c) spherical faced follower

• d) roller follower

In a radial cam, the follower moves

• a) in a direction perpendicular to the cam axis

• b) in a direction parallel to the cam axis

• c) in any direction irrespective of the cam axis

• d) along the cam axis

A radial follower is one

• a) that reciprocates in the guides

• b) that oscillates

• c) in which the follower translates along an axis passing through the cam centre of rotation.

• d) none of the mentioned

For high speed engines, the cam follower should move with

• a) uniform velocity

• b) simple harmonic motion

• c) uniform acceleration and retardation

• d) cycloidal motion

Angle of ascent of cam is defined as the angle

• a) during which the follower returns to its initial position

• b) of rotation of the cam for a definite displacement of the follower

• c) through which the cam rotates during the period in which the follower remains in highest position

• d) moved by the cam from the instant the follower begins to rise, till it reaches its highest position

The pressure angle of a cam depends upon

• a) offset between centre lines of cam and follower

• b) lift of follower

• c) angle of ascent

• d) all of the mentioned

Cylindrical cams can be classified as

• a) circular

• b) tangent

• c) reciprocating

• d) none of the mentioned

For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

• a) maximum and zero

• b) zero and maximum

• c) minimum and maximum

• d) zero and minimum