Question 1

Push buttons are always shown as normally open.

Accepted Answer

Push buttons can be either normally open (NO) or normally closed (NC), depending on their design and the requirements of the circuit they are used in.

Question 2

Push buttons that contain multiple contacts are often called ____ push buttons.
A) normally closed
B) pull
C) stacked
D) lighted

Accepted Answer

Push buttons that contain multiple contacts are often referred to as "stacked" push buttons because they have layers or "stacks" of contacts within a single button assembly, allowing for the control of multiple circuits from a single push button.

Question 3

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

Accepted Answer

A float switch symbol typically includes a circle to represent the ball float, added to a line that represents the switch mechanism.

Question 4

What are lighted push buttons?

Accepted Answer

The answer of What are lighted push buttons?...

Question 5

When a machine is installed, the motor, machine, and controls are all interrelated and must be considered as a unit.

Accepted Answer

When installing a machine, the motor, machine, and controls are designed to work together as a cohesive unit to ensure optimal performance and safety. Each component is interrelated and must be considered in the context of the entire system.

Question 6

The most complicated method of starting a motor is across-the-line starting.

Accepted Answer

Across-the-line starting is actually one of the simplest and most direct methods of starting electric motors, where the motor is connected directly to its power source.

Question 7

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

Accepted Answer

The National Electrical Code (NEC) is the standard that guides the selection of conductor size, fuse or circuit breaker size, and overload protection size to ensure electrical systems are safe and effective.

Question 8

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

Accepted Answer

Overload relays are used to protect motors from overheating due to excessive current, ensuring the motor operates within its safe limits.

Question 9

Motor control systems can be divided into three major types: ____________________, semiautomatic, and automatic.

Accepted Answer

The answer of Motor control systems can be divided into...

Question 10

What are the similarities and differences between automatic and semiautomatic control?

Accepted Answer

The answer of What are the similarities and differences between...

Question 11

Discuss operator safety and control systems.

Accepted Answer

The answer of Discuss operator safety and control systems....

Quiz 1: General Principles of Motor Control, Symbols and Schematic Diagrams

Push buttons are always shown as normally open.

Push buttons that contain multiple contacts are often called ____ push buttons.

The symbol for a float switch illustrates a ball float. It is drawn by adding a ____ to a line.