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________________________?

Related Mcqs:

1. The number of centers in a crank driven slider crank mechanism are_______________?

   A. 0
   B. 2
   C. 4
   D. 6
   E. may be any number depending upon position of mechanism

2. Instantaneous center of rotation of a link in a four bar mechanism lies on _______________?

   A. right side pivot of this link
   B. lift side pivot of this link
   C. a point obtained by intersection on extending adjoining links
   D. can’t occur
   E. none of the above

3. In above example, the minimum length of the coupler will be__________________?

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

4. Klein’s construction can be used to determine acceleration of various parts when the crank is at_________________?

   A. inner dead centre
   B. outer dead centre
   C. right angles to the link of the stroke
   D. at 45° to the line of the stroke
   E. all of the above

5. For simple harmonic motion of the of follower, a cosine curve represents___________________?

   A. displacement diagram
   B. velocity diagram
   C. acceleration diagram
   D. all of the above
   E. none of the above

6. In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links_________________?

   A. will remain same
   B. will change
   C. could change or remain unaltered depending oh which link is fixed
   D. will not occur
   E. none of the above

7. If the opposite links of a four bar linkage are equal, the links will always form a_________________?

   A. triangle
   B. rectangle
   C. parallelogram
   D. pentagon
   E. trapezoid

8. The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be________________?

   A. 0, and more than co2r
   B. 0, and less than coV
   C. 0, 0
   D. cor, 0
   E. none of the above

9. A slider crank chain consists of following numbers of turning and sliding pairs_________________?

   A. I, 3
   B. 2, 2
   C. 3, 1
   D. 4, 0
   E. 0, 4

10. The following is the inversion of slider crank chain mechanism______________________?

    A. Whitworth quick return mechanism
    B. hand pump
    C. oscillating cylinder engine
    D. all of the above
    E. none of the above