**Contents**show

## What is the average RPM of a DC motor?

Typical DC motors run at speeds from **one to twenty thousand RPM**.

## Which sensor can be used for speed measuring of DC motor?

It is very easy to vary speed of DC motor using arduino. Arduino can generate PWM on its analog output pin and when it is applied to DC motor, its speed varies. So it is very simple and easy task. To measure RPM, **opto-interrupt sensor MOC7811** is used.

## How much rpm do a 12V DC motor?

12 Volt DC Geared Motor

Voltage | 12 V DC |
---|---|

Speed | 8600 RPM |

Torque | 0.41-0.60 mNm |

Efficiency | 55.0% |

Terminal Type | 3.5″ wires |

## How do you find the synchronous speed of a motor?

The synchronous speed of an AC motor is determined **by the frequency of the source and the number of poles**. The RPM is calculated by multiplying the frequency times 60 and dividing by the number of pairs of poles. This was explained in Chapter 6.

## What is RPM in motor?

**Revolutions per minute** (abbreviated rpm, RPM, rev/min, r/min, or with the notation min^{−}^{1}) is the number of turns in one minute. It is a unit of rotational speed or the frequency of rotation around a fixed axis.