Question 1

List the advantages of a wound-rotor induction motor.

Accepted Answer

The wound-rotor induction motor has the following advantages:
• High starting torque and low starting current if the motor is started with the maximum resistance inserted in the rotor circuit
• Variable speed
• Smooth acceleration under heavy loads

Question 2

The ____________________ is a three-phase winding that is placed in the slots of a laminated steel core.

Accepted Answer

stator

Question 3

The wound-rotor motor and the squirrel-cage motor have the same percent efficiency, power factor, percent slip, speed, and torque characteristics.

Accepted Answer

A) True 
 B)False  True

Question 4

Some types of squirrel-cage induction motors are smaller than others and have aluminum end rings that are cast in one piece.

Accepted Answer

A) True 
 B)False

Question 5

The winding of a three-phase, squirrel-cage induction motor is made of formed coils that are connected to give three single-phase windings spaced 60 electrical degrees apart.

Accepted Answer

A) True 
 B)False

Question 6

Discuss how the direction of a wound-rotor induction motor can be reversed.

Accepted Answer

The direction of rotation of a wound-rot

Question 7

Describe a three-phase, squirrel-cage induction motor.

Accepted Answer

This motor is simple in construction and

Question 8

The basic structure of a three-phase, squirrel-cage induction motor consists of a(n) ____________________, a rotor, and two end shields that house the bearings supporting the rotor shaft.

Accepted Answer

The answer of The basic structure of a three-phase, squirrel-cage...

Question 9

The stator leads of a three-phase, wound-rotor induction motor are marked M1, M2, and M3.

Accepted Answer

A) True 
 B)False

Question 10

List the disadvantages of a wound-rotor induction motor.

Accepted Answer

There are several disadvantages to this

Question 11

The ____________________ induction motor is used when a strong starting torque and a range of speed control are required.

Accepted Answer

The answer of The ____________________ induction motor is used when...

Question 12

The basic squirrel-cage induction motor is a(n) ____________________ speed motor.

Accepted Answer

The answer of The basic squirrel-cage induction motor is a(n)...

Question 13

What are the three factors that cause the magnetic field to rotate in a three-phase motor.

Accepted Answer

1. The fact that the voltages of a three

Question 14

At start-up, all of the resistance of the wye-connected speed controller is inserted in the rotor circuit.

Accepted Answer

A) True 
 B)False

Question 15

The torque produced by an induction motor results from the interaction between the stator flux and the ____________________.

Accepted Answer

The answer of The torque produced by an induction motor...

List the advantages of a wound-rotor induction motor.

The ____________________ is a three-phase winding that is placed in the slots of a laminated steel core.

The wound-rotor motor and the squirrel-cage motor have the same percent efficiency, power factor, percent slip, speed, and torque characteristics.

Some types of squirrel-cage induction motors are smaller than others and have aluminum end rings that are cast in one piece.

The winding of a three-phase, squirrel-cage induction motor is made of formed coils that are connected to give three single-phase windings spaced 60 electrical degrees apart.

Discuss how the direction of a wound-rotor induction motor can be reversed.

Describe a three-phase, squirrel-cage induction motor.

The basic structure of a three-phase, squirrel-cage induction motor consists of a(n) ____________________, a rotor, and two end shields that house the bearings supporting the rotor shaft.

The stator leads of a three-phase, wound-rotor induction motor are marked M₁, M₂, and M₃.

List the disadvantages of a wound-rotor induction motor.

The ____________________ induction motor is used when a strong starting torque and a range of speed control are required.

The basic squirrel-cage induction motor is a(n) ____________________ speed motor.

What are the three factors that cause the magnetic field to rotate in a three-phase motor.

At start-up, all of the resistance of the wye-connected speed controller is inserted in the rotor circuit.

The torque produced by an induction motor results from the interaction between the stator flux and the ____________________.

Introduction to Alternating Current

Alternating-Current Circuits Containing Resistance

Inductance in Alternating-Current Circuits

Series Circuitsresistance and Impedance

Capacitors and Rc Time Constants

Capacitors in Alternating-Current Circuits

Series Circuits: Resistance, Inductive Reactance, and Capacitive Reactance

Ac Parallel Circuits

Seriesparallel Circuits

Three-Phase Systems

Ac Instruments and Meters

Alternating-Current Generators

Transformers

Transformer Connections for Three-Phase Circuits

Special Transformer Applications

The Synchronous Motor

Single-Phase Motors

Control Circuits

Filters

Exam 16: Three-Phase Induction Motors

List the advantages of a wound-rotor induction motor.

The ____________________ is a three-phase winding that is placed in the slots of a laminated steel core.

The wound-rotor motor and the squirrel-cage motor have the same percent efficiency, power factor, percent slip, speed, and torque characteristics.

Some types of squirrel-cage induction motors are smaller than others and have aluminum end rings that are cast in one piece.

The winding of a three-phase, squirrel-cage induction motor is made of formed coils that are connected to give three single-phase windings spaced 60 electrical degrees apart.

Discuss how the direction of a wound-rotor induction motor can be reversed.

Describe a three-phase, squirrel-cage induction motor.

The basic structure of a three-phase, squirrel-cage induction motor consists of a(n) ____________________, a rotor, and two end shields that house the bearings supporting the rotor shaft.

The stator leads of a three-phase, wound-rotor induction motor are marked M1, M2, and M3.

List the disadvantages of a wound-rotor induction motor.

The ____________________ induction motor is used when a strong starting torque and a range of speed control are required.

The basic squirrel-cage induction motor is a(n) ____________________ speed motor.

What are the three factors that cause the magnetic field to rotate in a three-phase motor.

At start-up, all of the resistance of the wye-connected speed controller is inserted in the rotor circuit.

The torque produced by an induction motor results from the interaction between the stator flux and the ____________________.

Introduction to Alternating Current

Alternating-Current Circuits Containing Resistance

Inductance in Alternating-Current Circuits

Series Circuitsresistance and Impedance

Capacitors and Rc Time Constants

Capacitors in Alternating-Current Circuits

Series Circuits: Resistance, Inductive Reactance, and Capacitive Reactance

Ac Parallel Circuits

Seriesparallel Circuits

Three-Phase Systems

Ac Instruments and Meters

Alternating-Current Generators

Transformers

Transformer Connections for Three-Phase Circuits

Special Transformer Applications

The Synchronous Motor

Single-Phase Motors

Control Circuits

Filters

The stator leads of a three-phase, wound-rotor induction motor are marked M₁, M₂, and M₃.