For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimidstroke respectively, is__________________?

Related Mcqs:

1. A cam with a roller follower would con stitute following type of pair______________?

   A. lower pair
   B. higher pair
   C. open pair
   D. close pair
   E. cam pair

2. 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________________________?

   A. 95 mm
   B. slightly less than 95 mm
   C. slightly more than 95 mm
   D. 45 mm
   E. none of the above

3. Pitch point on a cam is_________________?

   A. any point on pitch curve
   B. the point on cam pitch curve having the maximum pressure angle
   C. any point on pitch circle
   D. the point on cam pitch curve having the minimum pressure angle
   E. none of the above

4. A cam mechanism imparts following motion___________________?

   A. rotating
   B. oscillating
   C. reciprocating
   D. all of the above
   E. none of the above

5. 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. sum of radii of base circle and roller follower
   E. all of the above

6. Angle of dwell of cam is defined as the angle________________?

   A. during which the follower returns to its initial position
   B. of rotation of the cam for definite dis¬placement of the follower
   C. through which the cam rotates during the period in which the follower remains in the highest position
   D. moved by the cam from the instant the follower begins to rise, till it reaches its highest position
   E. moved by the cam from a beginning of ascent to the termination of descent

7. A circle passing through the pitch point with its center at the center of cam axis is known as___________________?

   A. pitch circle
   B. base circle
   C. prime circle
   D. outer circle
   E. cam circle

8. Cam size depends upon__________________?

   A. base circle
   B. pitch circle
   C. prime circle
   D. outer circle
   E. none of the above

9. The maximum value of the pressure angle in case of cam is kept as________________?

   A. 10°
   B. 14°
   C. 20°
   D. 30°
   E. 25°.

10. In its simplest form, a cam mechanism consists of following number of links___________________?

    A. 1
    B. 2
    C. 3
    D. 4
    E. none