Question

In communication systems, the device used to convert energy from one form to another form is

• A. repeater
• B. transducer
• C. amplifier
• D. attenuator
• E. antenna

Answer 1

The Correct Option is B

A transducer is a device that converts one form of energy into another. In communication systems, transducers are used to convert energy from electrical to mechanical, sound, or light forms, depending on the application. For example, microphones and speakers are transducers that convert sound energy to electrical energy and vice versa.

A repeater amplifies or regenerates signals to extend their range, but does not convert energy from one form to another.
An amplifier increases the amplitude of a signal but does not convert energy from one form to another.
An attenuator reduces the strength of a signal but does not involve conversion of energy forms.
An antenna transmits or receives electromagnetic waves but does not convert energy from one form to another.

The correct option is (B) : transducer

Answer 2

In communication systems, the device that converts energy from one form to another is called a transducer. 

Examples of transducers:
- A microphone converts sound energy to electrical energy.
- A speaker converts electrical energy to sound energy.

✅ Correct Answer: transducer