Question 1

The ____________________ motor is a three-phase ac motor that operates at a constant speed from no load to full load.

Accepted Answer

The answer of The ____________________ motor is a three-phase ac...

Question 2

Selsyn is a contraction of the term ____________________.

Accepted Answer

The answer of Selsyn is a contraction of the term...

Question 3

Why is the synchronous motor used in many industrial applications?

Accepted Answer

The synchronous motor is used in many industrial applications for the following reasons: it has a fixed speed from no load to full load, a high efficiency, and a low initial cost.

Question 4

Once a motor accelerates to nearly ____________________% of synchronous speed, the field circuit is energized from the dc source.

Accepted Answer

95
ninety ...

Question 5

Explain the purpose of the field discharge resistor.

Accepted Answer

To shut down the motor, the field circui...

Question 6

The stator core and windings of a synchronous motor are different in construction compared to those of a three-phase squirrel-cage induction motor or a wound-rotor induction motor.

Accepted Answer

A) True 
 B)False

Question 7

The Holtz motor has the same shaded-pole arrangement as the General Electric (Warren) motor.

Accepted Answer

A) True 
 B)False

Question 8

The leads for the stator windings are marked T1, T2, and T3.

Accepted Answer

A) True 
 B)False

Question 9

A synchronous motor operating at no load has a torque angle of nearly ____________________ degrees.

Accepted Answer

0
zero

Question 10

A(n) ____________________ differential system consists of a transmitter, a differential, and a receiver.

Accepted Answer

The answer of A(n) ____________________ differential system consists of a...

Question 11

List the components comprising a three-phase synchronous motor.

Accepted Answer

A laminated stator core with a three-phase armature winding
A revolving field with an amortisseur winding and slip rings
Brushes and brush holders
Two end shields housing the bearings that support the rotor shaft

Question 12

What is the rotor speed for the single-phase, two-pole synchronous clock motor when operated from a 60-Hz source?

Accepted Answer

The rotor speed for the single...

Question 13

Explain dc field excitation.

Accepted Answer

The direct current for synchronous motor...

Question 14

The differential selsyn is really a multi-phase transformer.

Accepted Answer

A) True 
 B)False

Question 15

Most large synchronous motors use an exciter that depends on brushes and slip rings.

Accepted Answer

A) True 
 B)False

Exam 17: The Synchronous Motor

The ____________________ motor is a three-phase ac motor that operates at a constant speed from no load to full load.

Correct Answer
verified

Selsyn is a contraction of the term ____________________.

Correct Answer
verified

Why is the synchronous motor used in many industrial applications?

Correct Answer
verified
The synchronous motor is used in many industrial applications for the following reasons: it has a fixed speed from no load to full load, a high efficiency, and a low initial cost.

Once a motor accelerates to nearly ____________________% of synchronous speed, the field circuit is energized from the dc source.

Correct Answer
verified
95
ninety ...
View Answer

Explain the purpose of the field discharge resistor.

Correct Answer
verified
To shut down the motor, the field circui...
View Answer

The stator core and windings of a synchronous motor are different in construction compared to those of a three-phase squirrel-cage induction motor or a wound-rotor induction motor.

Correct Answer
verified

The Holtz motor has the same shaded-pole arrangement as the General Electric (Warren) motor.

Correct Answer
verified

The leads for the stator windings are marked T₁, T₂, and T₃.

Correct Answer
verified

A synchronous motor operating at no load has a torque angle of nearly ____________________ degrees.

Correct Answer
verified
0 zero

A(n) ____________________ differential system consists of a transmitter, a differential, and a receiver.

Correct Answer
verified

List the components comprising a three-phase synchronous motor.

Correct Answer
verified
A laminated stator core with a three-phase armature winding A revolving field with an amortisseur winding and slip rings Brushes and brush holders Two end shields housing the bearings that support the rotor shaft

What is the rotor speed for the single-phase, two-pole synchronous clock motor when operated from a 60-Hz source?

Correct Answer
verified
The rotor speed for the single...
View Answer

Explain dc field excitation.

Correct Answer
verified
The direct current for synchronous motor...
View Answer

The differential selsyn is really a multi-phase transformer.

Correct Answer
verified

Most large synchronous motors use an exciter that depends on brushes and slip rings.

Correct Answer
verified

Exam 17: The Synchronous Motor

The ____________________ motor is a three-phase ac motor that operates at a constant speed from no load to full load.

Correct AnswerverifiedShow Answer

Selsyn is a contraction of the term ____________________.

Correct AnswerverifiedShow Answer

Why is the synchronous motor used in many industrial applications?

Correct AnswerverifiedThe synchronous motor is used in many industrial applications for the following reasons: it has a fixed speed from no load to full load, a high efficiency, and a low initial cost.

Once a motor accelerates to nearly ____________________% of synchronous speed, the field circuit is energized from the dc source.

Correct Answerverified95ninety ...View AnswerShow Answer

Explain the purpose of the field discharge resistor.

Correct AnswerverifiedTo shut down the motor, the field circui...View AnswerShow Answer

The stator core and windings of a synchronous motor are different in construction compared to those of a three-phase squirrel-cage induction motor or a wound-rotor induction motor.

Correct AnswerverifiedShow Answer

The Holtz motor has the same shaded-pole arrangement as the General Electric (Warren) motor.

Correct AnswerverifiedShow Answer

The leads for the stator windings are marked T1, T2, and T3.

Correct AnswerverifiedShow Answer

A synchronous motor operating at no load has a torque angle of nearly ____________________ degrees.

Correct Answerverified0 zero

A(n) ____________________ differential system consists of a transmitter, a differential, and a receiver.

Correct AnswerverifiedShow Answer

List the components comprising a three-phase synchronous motor.

Correct AnswerverifiedA laminated stator core with a three-phase armature winding A revolving field with an amortisseur winding and slip rings Brushes and brush holders Two end shields housing the bearings that support the rotor shaft

What is the rotor speed for the single-phase, two-pole synchronous clock motor when operated from a 60-Hz source?

Correct AnswerverifiedThe rotor speed for the single...View AnswerShow Answer

Explain dc field excitation.

Correct AnswerverifiedThe direct current for synchronous motor...View AnswerShow Answer

The differential selsyn is really a multi-phase transformer.

Correct AnswerverifiedShow Answer

Most large synchronous motors use an exciter that depends on brushes and slip rings.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The synchronous motor is used in many industrial applications for the following reasons: it has a fixed speed from no load to full load, a high efficiency, and a low initial cost.

Correct Answer
verified
95
ninety ...
View Answer

Correct Answer
verified
To shut down the motor, the field circui...
View Answer

Correct Answer
verified

Correct Answer
verified

The leads for the stator windings are marked T₁, T₂, and T₃.

Correct Answer
verified

Correct Answer
verified
0 zero

Correct Answer
verified

Correct Answer
verified
A laminated stator core with a three-phase armature winding A revolving field with an amortisseur winding and slip rings Brushes and brush holders Two end shields housing the bearings that support the rotor shaft

Correct Answer
verified
The rotor speed for the single...
View Answer

Correct Answer
verified
The direct current for synchronous motor...
View Answer

Correct Answer
verified

Correct Answer
verified