Machine Kinematics

Application of Kutzbach Criterion to Plane Mechanisms

Question 1
Marks : +2 | -2
Pass Ratio : 100%
A kinematic chain requires at least
2 links and 3 turning pairs
3 links and 4 turning pairs
4 links and 4 turning pairs
5 links and 4 turning pairs
Explanation:
In a Kinematic chain, the number of links should be equal to the number of turning pairs.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
The following is the inversion of slider crank chain mechanism
whitworth quick return mechanism
hand pump
oscillating cylinder engine
all of the mentioned
Explanation:
None
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Which of the following mechanisms produces mathematically an exact straight line motion?
Grasshopper mechanism
Watt mechanism
Peaucellier’s mechanism
Tchabichiff mechanism
Explanation:
Peaucellier’s mechanism gives straight line motion.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is
equal to sum of other two
greater than sum of other two
less than sum of other two
none of the mentioned
Explanation:
None
Question 5
Marks : +2 | -2
Pass Ratio : 100%
A typewriter mechanism has 7 number of binary joints, six links and none of higher pairs. The mechanism is
kinematically sound
not sound
soundness would depend upon which link is kept fixed
none of the mentioned
Explanation:
J + 1/2 H = 3/2L – 2
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Kinematic pairs are those which have
two elements held together mechanically
two elements having relative motion
two elements having Coroli’s component
none of the mentioned
Explanation:
Kinematic pair is ajoint of two elements that permits relative motion.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
A quarternary joint is equivalent to
one binary joint
two binary joints
three binary joints
four binary joints
Explanation:
None
Question 8
Marks : +2 | -2
Pass Ratio : 100%
In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links
will remain same
will change
will not occur
none of the mentioned
Explanation:
There will be no change.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
According to criterion of constraint by A.W. Klein
J + 1/2 H = 3/2L – 2
H + 1/2J = 2/3L – 2
J + 1/2H = 3/2L – 1
J + 3/2H = 1/2L – 2
Explanation:
The criterion for a chain to be constrained is
Question 10
Marks : +2 | -2
Pass Ratio : 100%
In its simplest form, a cam mechanism consists of following number of links
1
2
3
4
Explanation:
Cam consists of 3 links.