Unit-3
Electrical Measurements
2- Mark Questions and Answers
1. Define
electrical transducer
Transducer is a device which
converts the energy from one form to another form. Transducer that gives
electrical energy as output is known as electrical transducer. The Output
electrical signal may be voltage or current.
2. What is meant by Resistive
Transducer.
Measurement of change in resistance . Relationship is
given by
3. Define Potentiometer. State its types.
A pot is an
electromechanical device containing an electrically conductive wiper that
slides against a fixed resistive element according to the position or
angle of an external shaft.
Its 3 types are Linear POT, Rotary POT, Helipots
4. Draw the Equivalent Diagram of
Potentiometer.
5. State the Applications of
Potentiometer.
To measure
displacement (linear, angular)
– To measure level
– To measure force (as in strain
gauges)
– To measure pressure
– To detect error in a control
system (a comparator, or a comparison circuit).
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