“Open pairs are those which have__________________?

Related Mcqs:

1. Kinematic pairs are those which have__________________?

   A. point or line contact between the two elements when in motion
   B. surface contact between the two ele-ments when in motion
   C. elements of pairs not held together mechanically
   D. two elements that permit relative mo-tion
   E. none of the above

2. Relationship between the number of links (L) and number of pairs (P) is___________________?

   A. P = 2L-4
   B. P = 2L + 4
   C. P = 2L+2
   D. P = 2L-2
   E. P = L-4

3. Kinematic pairs are those which have two elements that ______________?

   A. have line contact
   B. have surface contact
   C. permit relative motion
   D. are held together
   E. have dynamic forces

4. Elements of pairs held together mechanically is known as ___________________?

   A. closed pair
   B. open pair
   C. mechanical pair
   D. rolling pair
   E. none of the above

5. Lower pairs are those which have___________________?

   A. point or line contact between the two elements when in motion
   B. surface contact between the two elements when in motion
   C. elements of pairs not -held together mechanically
   D. two elements that permit relative motion
   E. none of the above

6. 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

7. Kinematic pairs are those which have___________________?

   A. two elements held together mechani-cally
   B. two elements having relative motion
   C. two elements having Coroili’s com-ponent
   D. minimum of two instantaneous centres
   E. all of the above

8. Higher pairs are those which have_________________?

   A. point or line contact between the two elements when in motion
   B. surface contact between the two ele-ments when in motion
   C. elements of pairs not held together mechanically
   D. two elements that permit relative motion
   E. none of the above

9. Which of the following would constitute a link__________________?

   A. piston, piston rings and gudgeon pin
   B. piston, and piston rod
   C. piston rod and cross head
   D. piston, crank pin and crank shaft
   E. piston, piston-rod and cross head

10. The advantage of the piston valve over D-slide valve is that in the former case____________________?

    A. wear is less
    B. power absorbed is less
    C. both wear and power absorbed are low
    D. the pressure developed being high provides tight sealing
    E. there is overall economy of initial cost, maintenance and operation