# How do you control the RPM of a DC motor?

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## Can we control RPM of a DC motor?

Thus, the speed of a DC motor can be controlled in three ways: By varying the supply voltage. By varying the flux, and by varying the current through the field winding. By varying the armature voltage, and by varying the armature resistance.

## What determines the RPM of a DC motor?

DC Motor Speeds

The number of wire turns in an armature, the operating voltage of the motor, and the strength of the magnets all affect motor speed. … Typical no load or synchronous speeds for an AC fractional horsepower motor are 1800 or 3600 rpm, and 1000-5000 rpm for DC fractional hp motors.

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

So for example if the motor spins at 10,000 rpm on 24 V then with 40% PWM applied it should run at 10,000*0.4 = 4,000 rpm. With 20% PWM it should run at 10,000*0.2 = 2,000 rpm. This is equivalent to running the motor on 9.6 V or 4.8 V.

## Can DC motor turn both ways?

Simply put, DC motors can turn in either direction (clockwise or counter-clockwise) and can be easily controlled by inverting the polarity of the applied voltage.

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

25,000rpm motor dc 12v has acquired the highest response among electronics hobbyists for high speed operations.

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## What are the features of DC motor?

DC Motor Characteristics

• Runs on DC power or AC line voltage with a rectifier.
• Operating speeds of 1,000 to 5,000 rpm.
• 60-75% efficiency rate.
• High starting torque.