Which of the following statements is/are correct?
1. Any device that converts one form of energy into another can be termed a Transducer.
2. Information converted in electrical form and suitable for transmission is called a signal.
3. Unwanted signals that tend to disturb the transmission and processing of message signals in a communication system is termed as Noise.
1. 1 and 2 only
2. 3 only
3. 1 and 3 only
4. 1, 2 and 3