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

Related Mcqs:

1. In a darg link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is _______________?

   A. equal to sum of other two
   B. greater than sum of other two
   C. less than sum of other two
   D. there is no such relationship
   E. none of the above

2. The absolute acceleration of any point P in a link about center of rotation 0 is___________________?

   A. along PO
   B. perpendicular to PO
   C. at 45° to PO
   D. along OP
   E. none of the above

3. 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

4. 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

5. The number of links and instantaneous centers in a reciprocating engine mechanism are ___________________?

   A. 4, 4
   B. 4, 5
   C. 5, 4
   D. 6, 4
   E. 4, 6

6. The e.g. of a link in any mechanism would experience_________________?

   A. no acceleration
   B. linear acceleration
   C. angular acceleration
   D. both angular and linear accelerations
   E. none of the above

7. An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has___________________?

   A. 2 links
   B. 3 links
   C. 4 links
   D. 5 links
   E. none of the above

8. A typewriter mechanism has 7 number of binary joints, six links and none of higher pairs. The mechanism is________________?

   A. kinematically sound
   B. not sound
   C. soundness would depend upon which link is kept fixed
   D. data is not sufficient to determine same
   E. none of the above

9. The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line________________?

   A. joining the corresponding points
   B. perpendicular to line as per A.
   C. not possible to determine with these data
   D. at 45° to line as per A.
   E. none of the above

10. 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