Question 1

A very common method of detecting motor speed is with the use of a(n) ____________________.

Accepted Answer

The answer of A very common method of detecting motor...

Question 2

An electrotachometer is connected to the ____________________.

Accepted Answer

motor shaft

Question 3

How is normal speed for a DC motor obtained?

Accepted Answer

Normal speed for a DC motor is obtained by operating the motor with full rated voltage applied to the field and armature.

Question 4

The armature of a large DC motor has high resistance.

Accepted Answer

A) True 
 B)False

Question 5

A DC motor is generally operated at or below normal speed.

Accepted Answer

A) True 
 B)False

Question 6

If current flow through the shunt field is interrupted, a compound wound, DC motor will become a series motor and race to high speeds.

Accepted Answer

A) True 
 B)False

Question 7

What is an electrotachometer?

Accepted Answer

An electrotachometer...

Question 8

The shunt field power supply is generally designed to remain turned on even when the main (armature) power supply is turned off.

Accepted Answer

A) True 
 B)False

Question 9

Why do most solid-state DC motor controls use some method to limit the current to a safe value?

Accepted Answer

If the controller is turned on with full...

Question 10

The greatest advantage of using direct current motors is their variable ____________________ characteristic.

Accepted Answer

The answer of The greatest advantage of using direct current...

Question 11

Output voltage control is achieved by ____________________ the SCRs.

Accepted Answer

The answer of Output voltage control is achieved by ____________________...

Question 12

Speed control of a DC motor is much smoother if two separate ____________________, which convert the AC voltage to DC voltage, are used to control the motor instead of resistors connected in series with the armature.

Accepted Answer

The answer of Speed control of a DC motor is...

Question 13

How is a DC motor operated below normal?

Accepted Answer

The motor can be operated at below normal speed by applying rated voltage to the field and reduced voltage to the armature.

Question 14

If load is added to a motor, the motor speed increases.

Accepted Answer

A) True 
 B)False

Question 15

In a field failure control, what happens if the voltage falls below a certain level?

Accepted Answer

If the voltage falls below a c...

Exam 35: Solid State Dc Motor Controls

A very common method of detecting motor speed is with the use of a(n) ____________________.

Correct Answer
verified

An electrotachometer is connected to the ____________________.

Correct Answer
verified
motor shaft

How is normal speed for a DC motor obtained?

Correct Answer
verified
Normal speed for a DC motor is obtained by operating the motor with full rated voltage applied to the field and armature.

The armature of a large DC motor has high resistance.

Correct Answer
verified

A DC motor is generally operated at or below normal speed.

Correct Answer
verified

If current flow through the shunt field is interrupted, a compound wound, DC motor will become a series motor and race to high speeds.

Correct Answer
verified

What is an electrotachometer?

Correct Answer
verified
An electrotachometer...
View Answer

The shunt field power supply is generally designed to remain turned on even when the main (armature) power supply is turned off.

Correct Answer
verified

Why do most solid-state DC motor controls use some method to limit the current to a safe value?

Correct Answer
verified
If the controller is turned on with full...
View Answer

The greatest advantage of using direct current motors is their variable ____________________ characteristic.

Correct Answer
verified

Output voltage control is achieved by ____________________ the SCRs.

Correct Answer
verified

Speed control of a DC motor is much smoother if two separate ____________________, which convert the AC voltage to DC voltage, are used to control the motor instead of resistors connected in series with the armature.

Correct Answer
verified

How is a DC motor operated below normal?

Correct Answer
verified
The motor can be operated at below normal speed by applying rated voltage to the field and reduced voltage to the armature.

If load is added to a motor, the motor speed increases.

Correct Answer
verified

In a field failure control, what happens if the voltage falls below a certain level?

Correct Answer
verified
If the voltage falls below a c...
View Answer

Exam 35: Solid State Dc Motor Controls

A very common method of detecting motor speed is with the use of a(n) ____________________.

Correct AnswerverifiedShow Answer

An electrotachometer is connected to the ____________________.

Correct Answerverifiedmotor shaft

How is normal speed for a DC motor obtained?

Correct AnswerverifiedNormal speed for a DC motor is obtained by operating the motor with full rated voltage applied to the field and armature.

The armature of a large DC motor has high resistance.

Correct AnswerverifiedShow Answer

A DC motor is generally operated at or below normal speed.

Correct AnswerverifiedShow Answer

If current flow through the shunt field is interrupted, a compound wound, DC motor will become a series motor and race to high speeds.

Correct AnswerverifiedShow Answer

What is an electrotachometer?

Correct AnswerverifiedAn electrotachometer...View AnswerShow Answer

The shunt field power supply is generally designed to remain turned on even when the main (armature) power supply is turned off.

Correct AnswerverifiedShow Answer

Why do most solid-state DC motor controls use some method to limit the current to a safe value?

Correct AnswerverifiedIf the controller is turned on with full...View AnswerShow Answer

The greatest advantage of using direct current motors is their variable ____________________ characteristic.

Correct AnswerverifiedShow Answer

Output voltage control is achieved by ____________________ the SCRs.

Correct AnswerverifiedShow Answer

Speed control of a DC motor is much smoother if two separate ____________________, which convert the AC voltage to DC voltage, are used to control the motor instead of resistors connected in series with the armature.

Correct AnswerverifiedShow Answer

How is a DC motor operated below normal?

Correct AnswerverifiedThe motor can be operated at below normal speed by applying rated voltage to the field and reduced voltage to the armature.

If load is added to a motor, the motor speed increases.

Correct AnswerverifiedShow Answer

In a field failure control, what happens if the voltage falls below a certain level?

Correct AnswerverifiedIf the voltage falls below a c...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified
motor shaft

Correct Answer
verified
Normal speed for a DC motor is obtained by operating the motor with full rated voltage applied to the field and armature.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
An electrotachometer...
View Answer

Correct Answer
verified

Correct Answer
verified
If the controller is turned on with full...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The motor can be operated at below normal speed by applying rated voltage to the field and reduced voltage to the armature.

Correct Answer
verified

Correct Answer
verified
If the voltage falls below a c...
View Answer