Electrical Motor Control Midterm Review 2023 updated
Electrical Motor Control Midterm Review 2023 updated Chapter 1 - correct answer General Principles of Motor Control When a machine is installed, the motor, machine, and controls are all interrelated and must be considered as a unit. - correct answer True The most complicated method of starting a motor is across-the-line starting. - correct answer False The conductor size, fuse or circuit breaker size, and overload size are generally determined using the ____. - correct answer National Electrical Code Fuses and circuit breakers are generally employed for circuit protection, and ____ are used to protect the motor. - correct answer overload relays Motor control systems can be divided into three major types: ____________________, semiautomatic, and automatic. - correct answer manual Diodes are used to suppress the voltage spikes produced by coils that operate on ____________________. - correct answer direct-current or DC Chapter 2 - correct answer Symbols and Schematic Diagrams Push buttons are always shown as normally open. - correct answer False Limit switches are drawn by adding a wedge to one of the four basic switches. - correct answer True Push buttons that contain multiple contacts are often called ____ push buttons. - correct answer stacked The symbol for a float switch illustrates a ball float. It is drawn by adding a ____ to a line. - correct answer circle Schematics are always drawn to show components in their de-energized, or ____________________, state. - correct answer off The most common coil symbol used in schematic diagrams is the ____________________. - correct answer circle
Información del documento
- Subido en
- 15 de abril de 2023
- Número de páginas
- 8
- Escrito en
- 2022/2023
- Tipo
- Examen
- Contiene
- Preguntas y respuestas
