Introduction

This course is designed to prepare to understand the basic knowledge effectively. This course covers Basics of AC Motors and related products

Upon completion of Basics of AC Motors you should be able to:

• Explain the concepts of force, inertia, speed, and torque

• Explain the difference between work and power

• Describe the construction of a squirrel cage AC motor

• Describe the operation of a rotating magnetic field

• Calculate synchronous speed, slip, and rotor speed

• Plot starting torque, accelerating torque, breakdown torque, and
full- load torque on a NEMA torque curve

• Apply drating factors as required by an application

• Describe the relationship between V/Hz, torque, and horsepower

• Match an AC motor to an application and its load

• Describe torque characteristics and enclosures of Siemens above
NEMA motors

. You should complete Basics of Electricity before attempting Basics of AC Motors which is given on other link. An understanding of many of the concepts covered in Basics of Electricity is required for Basic of AC Motors. You may also want to complete Basics of Control Components which discusses the application of control devices for start, stop, and thermal protection of AC motors.