Question

Any device that converts one form of energy into another is called:
1. Rectifier
2. Amplifier
3. Transducer
4. None of these

Answer 1

Correct Answer - Option 3 : Transducer

CONCEPT:

Transducer:

• Any device that converts one form of energy into another can be termed as a transducer.
• In electronic communication systems, we usually come across devices that have either their inputs or outputs in the electrical form.
• An electrical transducer may be defined as a device that converts some physical variable (pressure, displacement, force, temperature, etc) into corresponding variations in the electrical signal at its output.

Rectifier:

• A rectifier is an electronic device that converts an alternating current into a direct current by using one or more P-N junction diodes.
• A diode behaves as a one-way valve that allows current to flow in a single direction. This process is known as rectification.

Amplification:

• It is the process of increasing the amplitude (and consequently the strength) of a signal using an electronic circuit called the amplifier.
• Amplification is necessary to compensate for the attenuation of the signal in communication systems.
• The energy needed for additional signal strength is obtained from a DC power source.
• Amplification is done at a place between the source and the destination wherever signal strength becomes weaker than the required strength.

EXPLANATION:

• From the above, it is clear that any device that converts one form of energy into another can be termed as a transducer. Hence, option 3 is correct.