Call Back

24x7 Support Available

To Get the Best Price Chat With Our Experts

chat now

In A Hurry? Get A Callback

whatsapp whatsapp

Table of Content

Electric Motors/AC Machines

AC machines are electric motors. The working of AC machines is based on rotating magnetic field. DC motors which dosent has brush are actually an AC machine. It is operated by Alternate current. It converts electrical energy in to mechanical energy or mechanical energy in to electrical energy. When it converts mechanical to electrical then it is called generators. And if it converts electrical to mechanical then it is known as motors. AC machines are also known as induction motors.

We have two types of electric motors:
1. AC machines
2. DC machines

AC machines are further classified in two types:
1. Asynchronous (it runs slower than supply frequency, it also works as prime movers)
2. Synchronous (it runs similar to the supply frequency, it also works as stepper motor)

AC machines are classified in another way on the basis of power supply:
1. Single phase AC machine (normally applied in low power need like mixer grinder, ceiling fans)
2. Three phase AC machine: in this three different set of windings are put in stator. (Normally applied in high power need like air conditioning, hydraulic pumps, irrigation pumps etc.)

The operation of asynchronous motor is depends on following facts:
1. Motor action: when an iron rod halt temporarily in a magnetic field.
2. Transformer action: stator is connected with power supply; current is generated in rotor windings.
3. Rotating field: rotating magnetic field can be formed by stator poles.

If we talk about the speed of AC motor then it is 3000 rpm for 50 Hz supply.

Ac machines also have some losses such as:
1. Hysteresis loss (it is proportional to the area of hysteresis loop)
2. Eddy current loss (when the material that conducts heat or electricity, make visible to a changing magnetic field)

Combinely, above losses are known as core loss.
Basic parts of AC motor: stator (produce rotating magnetic field and have coils, it is an outer part, it is connected with AC power supply) and rotor (produces torque, it is an inner part, squirrel cage is commonly used rotor, it is constructed with great density copper rods)

AC motors are used in manyfields such as commercial, industrial, residential etc.

Applications of AC machines:

1. In high power filed.2. In machine tools3. In electric and hybrid motors4. In permanent magnet motors5. In house hold appliances (hair dryer, vacuum cleaner, blenders etc.)6. In light industries7. In fixed application such as clocks and timer.

Advantages of AC machines:

1. Voltage can be stepped up or down in AC machines
2. Energy loss is less
3. Simple slip ring is used
4. High voltage
5. Overall good efficiency
6. Less parts to fail

As every coin has two phases in same way AC machines have some disadvantages as well, mentioned below:
1. Supplied EMF opposed by back EMF
2. Insulation and shielding are needed by wires
3. Frequency should continue with 50 Hz for operation

AC machines play very essential part in our day to day life like from water pumping to modern robot.AC motors are simple, tough in construction, and relatively economic in construction because it has no external connection and it is a self contained object.

Our Amazing Features
  • On Time Delivery

    There is no deadline that can stop our writers from delivering quality assignments to the students.

  • Plagiarism Free Work

    Get authentic and unique assignments by using our 100% plagiarism-free services.

  • 24 X 7 Live Help

    The experienced team of Live web tutors has got your back at all times of the day. Get connected with our customer support executives to receive instant and live solutions for your assignment problems.

  • Services For All Subjects

    We can build quality assignments in the subjects you're passionate about. Be it Engineering and Literature or Law and Marketing we have an expert writer for all.

  • Best Price Guarantee

    Get premium service at a pocket-friendly rate. At live web tutors, we understand the tight budget of students and thus offer our services at highly affordable prices.

live review Our Mission Client Satisfaction
  • The service is largely beneficial and has been really helpful for uplifting my grades. It helped me acquire the right boost that my academic career required.

    15 Mar 2021


  • Got the best editing experts in the market. I am overly satisfied.

    15 Mar 2021


  • Academic writing service incomplete package! They have the best writers, the best researchers, the best editors, basically everything that you need.

    15 Mar 2021


  • Prompt support, great writer, and timely feedback. Recommended for all students.

    15 Mar 2021


  • The Mathematics expert was astounding. They completed my mathematics assignment in just 45 minutes. I have never experienced anything like this ever before.

    15 Mar 2021


View All Review