**Contents**show

## What determines the size of a motor?

power, the torque required is reduced by 50%. There are other factors that also play a role in determining the size of the motors like; **understanding the duty cycle of the motor** (continuous, intermittent, or short time), cooling type as well as the altitude factor.

## How do you identify a DC motor?

Look for **the commutator & brushes and salient field system** to confirm. (iii) has 5 terminals, then it is a AC synchronous motor (3 for stator and 2 for field). Look for 2 slip rings for rotor dc supply. (iii) has 4 terminals, then it may be a DC motor, in which case look for the commutator & brushes to confirm.

## How small can Motors be?

The smallest electrical motor on the planet, at least according to Guinness World Records, is **200 nanometers**. Granted, that’s a pretty small motor—after all, a single strand of human hair is 60,000 nanometers wide—but that tiny mark is about to be shattered in a big way.

## What does a 12v DC motor mean?

12 volt DC motor is a **rotary motor which can convert the direct current into mechanical energy or convert mechanical energy into DC power**. It means that the 12 volt DC motor can interconvert electric energy and mechanical energy. When it is operated as a DC motor, electric energy is converted into mechanical energy.

## How can you tell the difference between AC and DC motors?

Difference between AC motor and DC motor in tabular form

AC Motors | DC Motors |
---|---|

AC motors have a longer life span. | DC motors have not longer life span. |

The speed of AC motors is simply controlled by varying the frequency of the current. | The speed of DC motors is controlled by varying the armature winding’s current. |

## What is the voltage of a DC motor?

Typical DC motors may operate on as **few as 1.5 Volts or up to 100 Volts or more**. Roboticists often use motors that operate on 6, 12, or 24 volts because most robots are battery powered, and batteries are typically available with these values. Operating Current.

## What three factors are used to determine the size of a motor?

There are three factors to calculate when sizing a motor; **Moment of Inertia, Torque, and Speed**.

## How do you determine motor capacity?

**Calculation of motor capacity**

- n = i x n1. n : Motor speed (min–1) n1 : Speed of gear output shaft or pulley etc. attached to it. i : Reduction ratio of gear head (e.g. i = 20 for 1/20)
- 1) Set the suitable SPEED.
- 2) Voltage calculation.
- 3) Torque measurement.
- 4) Set the speed torque.

## How do you determine motor rating?

The **higher the voltage**, the higher the torque. The voltage rating of a DC motor indicates the most efficient voltage while running. Be sure to apply the recommended voltage. If you apply too few volts, the motor will not work, whereas too many volts can short windings resulting in power loss or complete destruction.

## Which part will surely tell that given motor is DC motor and not an AC type?

**Commutator** will surely tell that given motor is DC motor and not an AC type. 3.

## How do I find my motor details without nameplate?

**Use a strobe tachometer to determine motor** RPM and then set up a generic motor in the database for that RPM. If loading cannot be provided by the operator use the acquired data and RPM to approximate loading. You can view the power factor for a value around 88 to 92 to approximate full load.