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Identify most suitable definition of a transducer.

• A transducer is a device that converts energy from one form to another.

• Transducer is a device which converts mechanical energy into electrical energy.

• A Transducer is a device which converts electrical energy into mechanical energy.

• Transducer is a device which converts physical quantity into electrical quantity.

 _________is a self-generating type transducer that can produce an electrical voltage or current output without utilizing any external power source.

• A passive transducer

• A primary transducer

• An active transducer

• A secondary transducer

Which of the following pair is an active transducer?

• Strain gauge, LVDT

• Inductive proximity sensor, Solar cell

• thermocouple, LVDT

• Thermocouple, solar cell

The transducer which needs an external power supply for its operation is called________.

• Active Transducer

• Inactive Transducer

• Passive Transducer

• Capacitive Transducer

An electrical transducer _________.

• requires external power for conversion of one quantity into other.

• does not require external power for conversion of one quantity into other.

• converts any quantity to be measured into a usable electrical signal.

• converts electrical signals into pressure.

Transducers, on the basis of nature of output signal, may be classified into

• primary and secondary transducers

• active and passive transducers

• electrical and inverse transducers

• analog and digital transducers

Resistive transducers are ______________

• Primary transducers

• Secondary transducers

• Either primary or secondary

• None of them

What will happen to resistance, if the length of the conductor is increased?

• Decreases

• No change

• Increases

• Doubles

Which of the following is correct for thermistors?

• Positive temperature coefficient of resistance

• Negative temperature coefficient of resistance

• Unpredictable temperature coefficient

• None of them

Potentiometric resistance transducer measures __________

• linear displacement

• rectangular displacement

• square displacement

• triangular displacement