Touch sensor is an example of

1. Tactile sensor
2. Vision sensor
3. Pressure sensor
4. None of these

Electric solenoids, are mainly utilised in?

1. Locking mechanisms
2. Doorbells
3. Automatic door openers
4. All of the above

Fill in the blanks:

1. Sensors transform physical parameters into ……………. .
2. ……………. combines numerous control systems to handle many elements of the robots.
3. ……………. is commonly used in modern air conditioners to vary the compressor's speed.
4. Impedance control allows the robot to respond to ……………. .
5. Task of ……………. is to understand input signals and generate control signals.

How does the feedback system work in robots? Explain.