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Physics · Measurement of Speed

The measurement of the rotational speed of motors using a light source and a light sensor is done by which of the following instruments?

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Updated: October 2026

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1Synchro
2Stroboscope
3Reluctance tachometer
4Photoelectric tachometer✓

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Photoelectric tachometer

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The measurement of the rotational speed of motors using a light source and a light sensor is done by which of the following instruments?

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