Test Bank For Industrial Motor Control - 7th - 2014 All Chapters - 9780357670590

Test Bank For Industrial Motor Control
Chapter 01: General Principles of Motor Control




Chapter 01: General Principles of Motor Control
1. When a machine is installed, the motor, machine, and controls are all interrelated and must be considered as a unit.
a. True
b. False
ANSWER: True
POINTS: 1
REFERENCES: Installation of Motors and Control Equipment
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

2. The most complicated method of starting a motor is across-the-line starting.
a. True
b. False
ANSWER: False
POINTS: 1
REFERENCES: Functions of Motor Control
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

3. The conductor size, fuse or circuit breaker size, and overload size are generally determined using the ____.
a. NEMA Code letter b. National Electrical Code
c. SF d. voltage
ANSWER: b
POINTS: 1
REFERENCES: Installation of Motors and Control Equipment
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

4. Fuses and circuit breakers are generally employed for circuit protection, and ____ are used to protect the motor.
a. MOVs b. rampings
c. varistors d. overload relays
ANSWER: d
POINTS: 1



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,Test Bank For Industrial Motor Control
Chapter 01: General Principles of Motor Control



REFERENCES: Functions of Motor Control
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

5. Motor control systems can be divided into three major types: ____________________, semiautomatic, and automatic.
ANSWER: manual
POINTS: 1
REFERENCES: Types of Control Systems
QUESTION TYPE: Completion
HAS VARIABLES: False
STUDENT ENTRY MODE: Basic
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

6. Diodes are used to suppress the voltage spikes produced by coils that operate on ____________________.
ANSWER: direct current
POINTS: 1
REFERENCES: Functions of Motor Control
QUESTION TYPE: Completion
HAS VARIABLES: False
STUDENT ENTRY MODE: Basic
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

7. What are the similarities and differences between automatic and semiautomatic control?
ANSWER: Automatic control is very similar to semiautomatic control in that pilot sensing devices are
employed to operate a magnetic contactor or starter that actually controls the motor. With
automatic control, however, an operator does not have to initiate certain actions. Once the
control conditions have been set, the system will continue to operate on its own.
POINTS: 1
REFERENCES: Types of Control Systems
QUESTION TYPE: Subjective Short Answer
HAS VARIABLES: False
STUDENT ENTRY MODE: Basic
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

8. Discuss operator safety and control systems.
ANSWER: Probably the most important function of any control system is to provide protection for the
operator or persons that may be in the vicinity of the machine. These protections will vary



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,Test Bank For Industrial Motor Control
Chapter 01: General Principles of Motor Control



from one type of machine to another depending on the specific function of the machine.
Many machines are provided with both mechanical and electrical safeguards.
POINTS: 1
REFERENCES: Functions of Motor Control
QUESTION TYPE: Subjective Short Answer
HAS VARIABLES: False
STUDENT ENTRY MODE: Basic
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM




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, Test Bank For Industrial Motor Control
Chapter 02: Symbols and Schematic Diagrams


Chapter 02: Symbols and Schematic Diagrams
1. Push buttons are always shown as normally open.
a. True
b. False
ANSWER: False
POINTS: 1
REFERENCES: Push Buttons
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

2. Limit switches are drawn by adding a wedge to one of the four basic switches.
a. True
b. False
ANSWER: True
POINTS: 1
REFERENCES: Sensing Devices
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

3. Push buttons that contain multiple contacts are often called ____ push buttons.
a. normally closed b. pull
c. stacked d. lighted
ANSWER: c
POINTS: 1
REFERENCES: Push Buttons
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 5/11/2020 10:37 AM
DATE MODIFIED: 5/11/2020 10:37 AM

4. The symbol for a float switch illustrates a ball float. It is drawn by adding a ____ to a line.
a. sphere b. circle
c. square d. triangle
ANSWER: b
POINTS: 1
REFERENCES: Sensing Devices
QUESTION TYPE: Multiple Choice



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