# What makes an electric motor more powerful?

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The strength of the motor (torque) is determined by voltage and the length of the wire in an electromagnet in the stator, the longer the wire (which means more coils in the stator) the stronger the magnetic field. This means more power to turn the rotor.

## How do you increase the power of an electric motor?

You can increase the speed of a D.C. Motor by increasing the number of windings and using a slightly heavier gauge wire. This assumes there is enough room on the armature to accommodate the extra wire. This may not increase the power. More powerful magnets will help increase torque.

## Does more voltage mean more power in a motor?

As long as you can draw enough current (amps) from the battery, you can get the same amount of power out of many voltages. So theoretically, the higher voltage doesn’t mean more power in and of itself. Voltage numbers like 40V, 80V, and 120V often represent peak (max) volts.

## How can we increase the speed of a motor?

Magnetic flux – By decreasing the flux, the speed of the motor can be increased. The flux can be changed by changing the current with a shunt field rheostat. Resistance of the armature circuit – By decreasing the resistance, there is increase in the armature current which causes a larger torque to be developed.

## Does higher voltage increase torque?

When you double voltage you will double speed, assuming you dont load the motor. … If your speed is the same, your torque at said speed is also the same.

## Does increasing voltage increase torque?

In the situation where the motor is not yet turning, doubling the voltage will indeed double the current and double the torque — because the voltage is acting against the resistance of the wire in the windings only.

## Does increasing voltage increase motor torque?

Increasing the voltage above normal parameters will effectively increase the torque because of a stronger voltage source being able to provide more current with the same resistance, but the increased voltage is more likely to increase speed—at least until the motor overloads and . . .

## What creates torque in an electric motor?

As the electric current travels through the motor within a magnetic field, it generates a force. The more current applied, the more the motor will spin. … But at zero RPM, all of the electricity the motor creates from the time electric power is applied becomes instant torque—without any back EMF to reduce its output.

## How do you increase horsepower and torque?

How You Can Increase Horsepower and Torque?

1. Clean House to Increase Horsepower. …
2. Perform a Tune-Up on the Engine. …
3. Install a Turbo Kit or Supercharger. …
4. Install a Cold-Air Intake. …
5. Install an Aftermarket Exhaust System. …
6. Buy an Engine Tuner. …
7. Conclusion.

## What causes torque to increase?

Torque can be increased in two ways: 1) by increasing the moment arm or 2) increasing the perpendicular force applied to the moment arm. The opposite is true for decreasing torque. If an object is at rest the torques on the object are balanced (they cancel out) and sum of those torques is zero.

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## What makes an electric motor slow?

Many of the parts in an electric motor are effectively non-serviceable as a do-it-yourself task, such as the windings, but you can replace the brushes that make contact with the armature. Worn brushes are often responsible for a motor that turns slowly, as the contacts break down and current can’t be applied.

## How do you increase the speed of a 12 volt motor?

You increase the speed by increasing the frequency. If a motor base speed is 60 Hz, raising the frequency to 120 Hz will double the speed of the motor.

## What determines the RPM of an electric motor?

The rotating speed of an electric motor depends on two factors: its physical construction, and the frequency (Hz) of the voltage supply.