What kind of robot movement revolves around a fixed point?

1. Linear motion
2. Circular motion
3. Angular motion
4. None of these

What kind of robot movement involves the straight line back and forth movement?

1. Linear motion
2. Angular motion
3. Circular motion
4. None of these

How many Degrees of Freedom does a robot arm with one prismatic joint and one revolute joint normally have?

1. One
2. Two
3. Three
4. Four

How many DoF are there in a robot arm having three revolute joints?

1. Two
2. Three
3. Four
4. One