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Which of the following types of transducers can be used for the measurement of the angular position of a staff? 1. Circular potentiometer 2. LVDT 3. e-pickup 4. Synchro pair

Which of the following types of transducers can be used for the measurement of the angular position of a staff? 1. Circular potentiometer 2. LVDT 3. e-pickup 4. Synchro pair Correct Answer 1 and 4

The synchro pair measures and compares two angular displacements and its output voltage is approximately linear with the angular difference of the axis of both the shafts.

A circular potentiometer or rotary potentiometer can be used to measure the angular position.

Important Points:

RVDT:

  • RVDT stands for “Rotary variable differential transformer”.
  • It measures angular displacement i.e. its output is an AC current that is linearly proportional to the angular displacement.

 

The basic circuit diagram for an RVDT is as shown:

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LVDT:

  • LVDT stands for Linear variable differential transformer.
  • It measures linear displacement since its output is AC-current which is linearly proportional to linear displacement.

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