Modern handheld digital tachometers operated by counting light pulses returned to the unit byA.the tach generatorB.either the coupling or shaftC.a small bulb attached to the shaftD.a piece of reflective tape
Modern handheld digital tachometers operated by counting light pulses returned to the unit by
A.the tach generator
B.either the coupling or shaft
C.a small bulb attached to the shaft
D.a piece of reflective tape
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