Piezoelectric actuators are suitable for:

1. Large scale and normal motion
2. Large scale precise motion
3. Small scale precise motion
4. Small scale normal motion

Controllers execute tasks on the basis of their …………… .

1. Physical structure
2. Programming
3. Company
4. Environment

For underwater robots, the suitable design material would be:

1. Titanium
2. Stainless steel
3. Polymers
4. All of these

The …………… provides body structure to the humanoid robot and helps it to move and balance.

1. Head
2. Arms
3. Legs
4. Torso