Question 1

NEMA specifications call for a starter to be derated.

Accepted Answer

A) True 
 B)False

Question 2

Reversing starters are available in ___________construction.

Accepted Answer

A)  horizontal and vertical
B)  parallel and series
C)  mechanical
D)  power-coilE) B) and C)
F) C) and D) A

Question 3

The term interlocking is used generally when referring to motor controllers and control stations that are ____________to provide control of production operations.

Accepted Answer

A)  fixated
B)  interconnected
C)  connected
D)  programmedE) A) and B)
F) None of the above B

Question 4

A mechanical interlocking device is assembled at the factory ________the forward and reverse contactors.

Accepted Answer

A)  on top of
B)  below
C)  between
D)  adjacent toE) A) and B)
F) A) and C) C

Question 5

To reverse the direction of rotation of single-phase motors, both the starting and running winding motor leads are interchanged.

Accepted Answer

A) True 
 B)False

Question 6

If magnetic control devices are to be used, then reversing_________ accomplish the reversal of the motor direction.

Accepted Answer

A)  transformers
B)  transducers
C)  rotators
D)  startersE) None of the above
F) A) and D)

Question 7

Reversing starters consisting of mechanical and electrical interlocked devices are preferred for________ .

Accepted Answer

A)  easier maintenance
B)  maximum safety
C)  easier operation
D)  economic reasonsE) B) and C)
F) All of the above

Question 8

The direction of rotation of three-phase motors can be reversed by interchanging any two-motor leads to the line.

Accepted Answer

A) True 
 B)False

Question 9

Push-button interlocking is an electrical method of preventing both starter coils from being de-energized simultaneously.

Accepted Answer

A) True 
 B)False

Question 10

Electrical interlocks are usually mounted on the side of a motor starter.

Accepted Answer

A) True 
 B)False

Exam 21: Interlocking Methods for Reversing Control

NEMA specifications call for a starter to be derated.

Correct Answer
verified

Reversing starters are available in ___________construction.

Correct Answer
verified
A

The term interlocking is used generally when referring to motor controllers and control stations that are ____________to provide control of production operations.

Correct Answer
verified
B

A mechanical interlocking device is assembled at the factory ________the forward and reverse contactors.

Correct Answer
verified
C

To reverse the direction of rotation of single-phase motors, both the starting and running winding motor leads are interchanged.

Correct Answer
verified

If magnetic control devices are to be used, then reversing_________ accomplish the reversal of the motor direction.

Correct Answer
verified

Reversing starters consisting of mechanical and electrical interlocked devices are preferred for________ .

Correct Answer
verified

The direction of rotation of three-phase motors can be reversed by interchanging any two-motor leads to the line.

Correct Answer
verified

Push-button interlocking is an electrical method of preventing both starter coils from being de-energized simultaneously.

Correct Answer
verified

Electrical interlocks are usually mounted on the side of a motor starter.

Correct Answer
verified

Exam 21: Interlocking Methods for Reversing Control

NEMA specifications call for a starter to be derated.

Correct AnswerverifiedShow Answer

Reversing starters are available in ___________construction.

Correct AnswerverifiedA

The term interlocking is used generally when referring to motor controllers and control stations that are ____________to provide control of production operations.

Correct AnswerverifiedB

A mechanical interlocking device is assembled at the factory ________the forward and reverse contactors.

Correct AnswerverifiedC

To reverse the direction of rotation of single-phase motors, both the starting and running winding motor leads are interchanged.

Correct AnswerverifiedShow Answer

If magnetic control devices are to be used, then reversing_________ accomplish the reversal of the motor direction.

Correct AnswerverifiedShow Answer

Reversing starters consisting of mechanical and electrical interlocked devices are preferred for________ .

Correct AnswerverifiedShow Answer

The direction of rotation of three-phase motors can be reversed by interchanging any two-motor leads to the line.

Correct AnswerverifiedShow Answer

Push-button interlocking is an electrical method of preventing both starter coils from being de-energized simultaneously.

Correct AnswerverifiedShow Answer

Electrical interlocks are usually mounted on the side of a motor starter.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified
B

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified