# Relative motion between links in more than one direction - Theory of Machines - 1

Q.  Relative motion between links is more than one direction which is unpredictable is known as
- Published on 06 Aug 15

a. completely constrained motion
b. incompletely constrained motion
c. successfully constrained motion
d. none of the above

#### Discussion

• Sravanthi   -Posted on 19 Oct 15
- Relative motion between two links in more than one direction is called as incompletely constrained motion. In this type of constrained motion, the motion of link cannot be predicted.

- If the relative motion between two links occurs only in a definite direction then it is called as completely constrained motion. In this type of constrained the direction of motion can be predicted.

- If relative motion between two links is not completely constrained and is made constrained by using shaft with a taper key then it is called as successfully constrained motion.

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