Which instrument shows the revolutions per minute (RPM) of the rotary table or top drive unit?

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Multiple Choice

Which instrument shows the revolutions per minute (RPM) of the rotary table or top drive unit?

Explanation:
Measuring how fast the rotary table or top drive is turning is done with a rotary tachometer. This device reads revolutions per minute from a rotating shaft and displays the RPM, giving the operator a real-time speed readout to control drilling parameters and avoid overspeed. It may use a sensor around the shaft or a magnetic pickup and show results on a dial or digital display. The other items don’t measure rotational speed: a trip tank volume indicator tracks the remaining volume in the trip tank, a pump rate gauge shows fluid flow, and a prime mover is the power source for the equipment, not a speed readout.

Measuring how fast the rotary table or top drive is turning is done with a rotary tachometer. This device reads revolutions per minute from a rotating shaft and displays the RPM, giving the operator a real-time speed readout to control drilling parameters and avoid overspeed. It may use a sensor around the shaft or a magnetic pickup and show results on a dial or digital display. The other items don’t measure rotational speed: a trip tank volume indicator tracks the remaining volume in the trip tank, a pump rate gauge shows fluid flow, and a prime mover is the power source for the equipment, not a speed readout.

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