Which of the following represents active transducer?

By Mandeep Kumar|Updated : August 3rd, 2022

1. Thermistor

2. LVDT

3. Strain Gauge

4. Thermocouple

An electronic device that transforms energy from one form to another is called a transducer. Usually, it converts a signal in one form of energy to a signal in another. Microphones, Loudspeakers, Thermometers, Position and Pressure sensors, and antennas are examples of transducers.

Answer: A thermocouple is an active transducer.

The transducers that have the ability to convert one form of energy into another form without using an external source of power are called Active Transducers. They are also known as self-generating transducers.

On the other hand, the transducers that convert one form of energy into another by making use of an external source of power are known as Passive Transducers. They are also called externally energized transducers.

Difference between Active Transducer and Passive Transducer

Following are the key differences between Active Transducer and Passive Transducer:

Active Transducer

Passive Transducer

Operational energy is not derived from an external source of power.

Operational energy is derived from an external source of power.

Electrical current or voltage is the generated output.

Quantity varies related to the passive elements.

Simple conversion.

Complex conversion.

Need of further amplification.

Further amplification is not required.

Tachogenerators, Thermocouples, and Piezoelectric crystals are examples.

Potentiometers, thermistors, etc. are examples.

Summary:

Which of the following represents an active transducer?

Out of the given options, Thermocouple is an active transducer.

Read More:

Comments

write a comment

PO, Clerk, SO, Insurance

BankingIBPS POIBPS ClerkSBI POIBPS SOSBI ClerkRBIIDBI SORRBLICESICNainital BankOtherQuick LinkMock Test

Follow us for latest updates