Question 1

One method of providing plugging control is with the use of an automatic timed circuit.

Accepted Answer

A) True 
 B)False

Question 2

What are the three factors that determine induced voltage?

Accepted Answer

The three factors are: strength of magnetic field, length of conductor, and speed of the cutting action.

Question 3

How is dynamic braking for a DC motor accomplished?

Accepted Answer

Dynamic braking for a DC motor is accomplished by permitting power to remain connected to the shunt field when the motor is stopped, and reconnecting the armature to a high wattage resistor.

Question 4

____________________ is defined by NEMA as a system of braking, in which the motor connections are reversed so that the motor develops a counter torque that acts as a retarding force.

Accepted Answer

Plugging.

Question 5

Why is dynamic braking sometimes referred to as magnetic braking?

Accepted Answer

Dynamic braking is sometimes r...

Question 6

What is the most accurate method of plug stopping a motor?

Accepted Answer

The most accurate me...

Question 7

Figure 30-2

In the accompanying figure, the brake is applied automatically when the motor is not operating.

Accepted Answer

A) True 
 B)False

Question 8

When a generator produces electrical power, it produces ____________________, making the armature hard to turn.

Accepted Answer

The answer of When a generator produces electrical power, it...

Question 9

Plugging is used with direct current motors more than with three phase squirrel cage motors.

Accepted Answer

A) True 
 B)False

Question 10

Dynamic braking for a DC motor is very effective, but the braking effect becomes weaker as the armature slows down.

Accepted Answer

A) True 
 B)False

Question 11

Mechanical brakes can be obtained in two basic types: drum and ____________________.

Accepted Answer

The answer of Mechanical brakes can be obtained in two...

Question 12

The principle of dynamic braking for a direct current motor is to change the motor into a(n) ____________________.

Accepted Answer

The answer of The principle of dynamic braking for a...

Question 13

Dynamic braking circuits for alternating current motors generally include a(n) ______________________________ to lower the voltage to the rectifier.

Accepted Answer

step-down-transforme...

Question 14

Mechanical type brakes cannot hold a suspended load.

Accepted Answer

A) True 
 B)False

Question 15

How is plugging accomplished with three phase motors?

Accepted Answer

Plugging is accomplished with ...

Exam 30: Braking

One method of providing plugging control is with the use of an automatic timed circuit.

Correct Answer
verified

What are the three factors that determine induced voltage?

Correct Answer
verified
The three factors are: strength of magnetic field, length of conductor, and speed of the cutting action.

How is dynamic braking for a DC motor accomplished?

Correct Answer
verified
Dynamic braking for a DC motor is accomplished by permitting power to remain connected to the shunt field when the motor is stopped, and reconnecting the armature to a high wattage resistor.

____________________ is defined by NEMA as a system of braking, in which the motor connections are reversed so that the motor develops a counter torque that acts as a retarding force.

Correct Answer
verified
Plugging.

Why is dynamic braking sometimes referred to as magnetic braking?

Correct Answer
verified
Dynamic braking is sometimes r...
View Answer

What is the most accurate method of plug stopping a motor?

Correct Answer
verified
The most accurate me...
View Answer

Figure 30-2 In the accompanying figure, the brake is applied automatically when the motor is not operating.

Correct Answer
verified

When a generator produces electrical power, it produces ____________________, making the armature hard to turn.

Correct Answer
verified

Plugging is used with direct current motors more than with three phase squirrel cage motors.

Correct Answer
verified

Dynamic braking for a DC motor is very effective, but the braking effect becomes weaker as the armature slows down.

Correct Answer
verified

Mechanical brakes can be obtained in two basic types: drum and ____________________.

Correct Answer
verified

The principle of dynamic braking for a direct current motor is to change the motor into a(n) ____________________.

Correct Answer
verified

Dynamic braking circuits for alternating current motors generally include a(n) ______________________________ to lower the voltage to the rectifier.

Correct Answer
verified
step-down-transforme...
View Answer

Mechanical type brakes cannot hold a suspended load.

Correct Answer
verified

How is plugging accomplished with three phase motors?

Correct Answer
verified
Plugging is accomplished with ...
View Answer

Exam 30: Braking

One method of providing plugging control is with the use of an automatic timed circuit.

Correct AnswerverifiedShow Answer

What are the three factors that determine induced voltage?

Correct AnswerverifiedThe three factors are: strength of magnetic field, length of conductor, and speed of the cutting action.

How is dynamic braking for a DC motor accomplished?

Correct AnswerverifiedDynamic braking for a DC motor is accomplished by permitting power to remain connected to the shunt field when the motor is stopped, and reconnecting the armature to a high wattage resistor.

____________________ is defined by NEMA as a system of braking, in which the motor connections are reversed so that the motor develops a counter torque that acts as a retarding force.

Correct AnswerverifiedPlugging.

Why is dynamic braking sometimes referred to as magnetic braking?

Correct AnswerverifiedDynamic braking is sometimes r...View AnswerShow Answer

What is the most accurate method of plug stopping a motor?

Correct AnswerverifiedThe most accurate me...View AnswerShow Answer

Figure 30-2 In the accompanying figure, the brake is applied automatically when the motor is not operating.

Correct AnswerverifiedShow Answer

When a generator produces electrical power, it produces ____________________, making the armature hard to turn.

Correct AnswerverifiedShow Answer

Plugging is used with direct current motors more than with three phase squirrel cage motors.

Correct AnswerverifiedShow Answer

Dynamic braking for a DC motor is very effective, but the braking effect becomes weaker as the armature slows down.

Correct AnswerverifiedShow Answer

Mechanical brakes can be obtained in two basic types: drum and ____________________.

Correct AnswerverifiedShow Answer

The principle of dynamic braking for a direct current motor is to change the motor into a(n) ____________________.

Correct AnswerverifiedShow Answer

Dynamic braking circuits for alternating current motors generally include a(n) ______________________________ to lower the voltage to the rectifier.

Correct Answerverifiedstep-down-transforme...View AnswerShow Answer

Mechanical type brakes cannot hold a suspended load.

Correct AnswerverifiedShow Answer

How is plugging accomplished with three phase motors?

Correct AnswerverifiedPlugging is accomplished with ...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified
The three factors are: strength of magnetic field, length of conductor, and speed of the cutting action.

Correct Answer
verified
Dynamic braking for a DC motor is accomplished by permitting power to remain connected to the shunt field when the motor is stopped, and reconnecting the armature to a high wattage resistor.

Correct Answer
verified
Plugging.

Correct Answer
verified
Dynamic braking is sometimes r...
View Answer

Correct Answer
verified
The most accurate me...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
step-down-transforme...
View Answer

Correct Answer
verified

Correct Answer
verified
Plugging is accomplished with ...
View Answer