Deck 1: General Principles of Motor Control

Question 1

What are manual controllers?

Answer 1

Manual controllers are generally very simple devices that connect the motor directly to the line.

Question 2

With automatic control, an operator has to initiate certain actions.

Answer 2

False

Question 3

Diodes are used to suppress the voltage spikes produced by coils that operate on direct current.

Answer 3

True

Question 4

Manual control may be accomplished by simply connecting a switch in series with the motor.

Question 5

The current flow through the MOV is called ____________________ current and is so small that it does not affect the operation of the circuit.

Question 6

Fuses and circuit breakers are generally employed for ____________________ protection.

Question 7

One of the main considerations when installing a machine is the power source.

Question 8

What does a schematic diagram show?

Question 9

What is the difference between jogging and inching?

Question 10

High voltage surges are harmless and cannot damage electronic components connected to the power line.

Question 11

____________________ control is characterized by the use of push buttons, limit switches, pressure switches, and other sensing devices to control the operation of a magnetic contractor or starter.

Question 12

Insurance companies established the ______________________________ organization in an effort to reduce the number of fires caused by electrical equipment.

Question 13

The conductor size, fuse or circuit breaker size, and overload size are generally determined using the ____________________ Code and/or local codes.

Question 14

What does Underwriters Laboratories (UL) do?

Question 15

What is a wiring diagram?