# How do you build a DC motor in physics?

## What is DC motor PDF?

4.1 D.C. Motor Principle A machine that converts d.c. power into mechanical power is known as a d.c. motor. Its operation is based on the principle that when a current carrying. conductor is placed in a magnetic field, the conductor experiences a mechanical. force.

## What is DC motor Class 12?

A DC motor is an electrical machine that converts electrical energy into mechanical energy. In a DC motor, the input electrical energy is the direct current which is transformed into the mechanical rotation.

## What are the types of DC motor?

• Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux.
• Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current.
• Shunt DC Motors.
• Compound DC Motors.

## How do you make a DC motor step by step?

1. Step 1: Build your coil base.
2. Step 2: Wrap the coil around the coil base.
3. Step 3: Test the electrical connection of the wire.
4. Step 4: Improve the electrical connections of the coil base.
5. Step 5: Check the connections.
6. Step 6: Make the commutator.
7. Step 7: Construct the stator (the base)

## What are the 3 types of DC motors?

• Series DC Motor.
• Shunt/Parallel DC Motor.
• Compound DC Motors.
• Permanent Magnet DC Motor.

## Where is DC motor used?

Small DC motors are used in tools, toys, and appliances. The universal motor can operate on direct current but is a lightweight brushed motor used for portable power tools and appliances. Larger DC motors are currently used in propulsion of electric vehicles, elevator and hoists, and in drives for steel rolling mills.

## What is main part of DC motor?

These components are: a stator, a rotor, a yoke, poles, armature windings, field windings, commutator, and brushes. Many of its parts are the same as parts of AC motor, but with a little change.

## What is DC motor and its working principle?

The DC motor is the motor which converts the direct current into the mechanical work. It works on the principle of Lorentz Law, which states that “the current carrying conductor placed in a magnetic and electric field experience a force”. And that force is the Lorentz force.

## Why is DC motor used?

Many applications require a high starting torque. The D.C. motor, by its very nature, has a high torque vs. speed characteristic, enabling it to deal with high resistive torques and absorb sudden rises in load effortlessly; the motor speed adapts to the load.

## What is armature in DC motor?

A DC motor has coils of wire mounted in slots on a cylinder of ferromagnetic material, which is termed the armature. The armature is mounted on bearings and is free to rotate. It is mounted in the magnetic field produced by permanent magnets or current passing through coils of wire, which are called the field coils.

## What are the characteristics of DC motor?

• 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.

## Which motor is better AC or DC?

Which Motor Is More Powerful: AC or DC? AC motors are generally considered to be more powerful than DC motors because they can generate higher torque by using a more powerful current. However, DC motors are typically more efficient and make better use of their input energy.

## How do DC motors run?

A Direct Current (DC) motor is a motor that turns energy from a direct current and turns this into mechanical energy. The first DC motor was developed around the 1830’s-1840s. They were commercially unsuccessful, because these motors were battry powered and batteries were still very expensive and the quality was low.

## Which type of DC motor is best?

Series wound DC motors are best for applications that require high startup torque, without the need for speed regulation. Like a shunt motor, as a load is applied to a DC series motor, the motor speed decreases, which reduces the back EMF and increases the net voltage.

## What is the efficiency of DC motor?

The motors are normally designed to have maximum efficiency while working at or near full load. The efficiency of a dc motor at normal operating conditions may be as high as 95%.

## What is torque of a motor?

Torque relates to the rotational force of an electric motor while speed refers to the rate that the motor can rotate. This means that torque is associated with rotational force while speed relates to the rate of rotation which can be calculated by examining the RPMs, or revolutions per minute.

## Where can I find DC motor at home?

Kitchen appliances like blenders and mixers turn electricity into mechanical energy by using electric motors. Most washer and dryer machines use an AC motor to be able to spin in either direction. Small DC motors can be found in DVD or CD players, and the disk drive of a computer.

## What is name of DC motor?

There are 3 main types of DC motor that are available: Series, Shunt and Compound. These terms relate to the type of connection of the field windings with respect to the armature circuit.

## What is the voltage equation of DC motor?

V = Eb + IaRa ….. ( The above relation is known as “Voltage Equation of the DC Motor”.

## Which motor is constant speed?

Constant Speed Motors refer to standard electric motors which have normal operating speed that is theoretically or practically constant. An example is synchronous motors; low slip induction motors or conventional parallel winding DC motors.

## What are the application of DC?

What are common DC applications? This form of power is most commonly produced by sources such as solar cells, batteries, and thermocouples. DC power is widely used in low voltage applications such as charging batteries, automotive applications, aircraft applications and other low voltage, low current applications.

## Who invented DC motor?

In 1886 Frank Julian Sprague invented the first practical DC motor, a non-sparking motor capable of constant speed under variable loads.