# Machine Kinematics Questions and Answers – Application of Kutzbach Criterion to Plane Mechanisms

This set of Machine Kinematics Mcqs focuses on “Application of Kutzbach Criterion to Plane Mechanisms”.

1. In its simplest form, a cam mechanism consists of following number of links
a) 1
b) 2
c) 3
d) 4

Explanation: Cam consists of 3 links.

2. Which of the following mechanisms produces mathematically an exact straight line motion?
a) Grasshopper mechanism
b) Watt mechanism
c) Peaucellier’s mechanism
d) Tchabichiff mechanism

Explanation: Peaucellier’s mechanism gives straight line motion.

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) will not occur
d) none of the mentioned

Explanation: There will be no change.

4. A kinematic chain requires at least
a) 2 links and 3 turning pairs
b) 3 links and 4 turning pairs
c) 4 links and 4 turning pairs
d) 5 links and 4 turning pairs

Explanation: In a Kinematic chain, the number of links should be equal to the number of turning pairs.

5. In a drag 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) none of the mentioned

Explanation: None

6. 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 mentioned

Explanation: None

7. Kinematic pairs are those which have
a) two elements held together mechanically
b) two elements having relative motion
c) two elements having Coroli’s component
d) none of the mentioned

Explanation: Kinematic pair is ajoint of two elements that permits relative motion.

8. According to criterion of constraint by A.W. Klein
a) J + 1/2 H = 3/2L – 2
b) H + 1/2J = 2/3L – 2
c) J + 1/2H = 3/2L – 1
d) J + 3/2H = 1/2L – 2

Explanation: The criterion for a chain to be constrained is
J + 1/2 H = 3/2L – 2

9. A quarternary joint is equivalent to
a) one binary joint
b) two binary joints
c) three binary joints
d) four binary joints

Explanation: None

10. 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) none of the mentioned

Explanation: J + 1/2 H = 3/2L – 2
or, 7 + 0 = 3/2 x 6 -2
or, 7 = 7

Hence, it is Kinematically sound.

Sanfoundry Global Education & Learning Series – Machine Kinematics.
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