Question

____are used to convert acquired signals from the environment into ____ signals suitable for cognitive radio.

(a) Sensors, physical

(b) Sensors, electrical

(c) Actuators, electrical

(d) Actuators, physical

Answer 1

The correct answer is (b) Sensors, electrical

Explanation: Sensors are used to convert acquired signals from the environment intoelectrical signals suitable for cognitive radio. It is critical to learn and interact with the environment. The acquired signals may be electromagnetic, optic or sound.