Electrical Engineering · Electrical Measurements
The frequency of an unknown signal can be measured using Lissajous figures on a Cathode Ray Oscilloscope (CRO) by applying the unknown and known frequency signals to:
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- 1the vertical and horizontal deflection plates of the oscilloscope respectively✓
- 2the same horizontal deflection plates of the oscilloscope
- 3the external trigger input of the oscilloscope
- 4the same vertical deflection plates of the oscilloscope
Correct answer
the vertical and horizontal deflection plates of the oscilloscope respectively
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