Deck 1: General Principles of Motor Control

Question 1

____________________ 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.

Answer 1

Semiautomatic

Question 2

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

Answer 2

National Electrical

Question 3

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

Answer 3

True

Question 4

What are manual controllers?

Question 5

What does Underwriters Laboratories (UL) do?

Question 6

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

Question 7

What does a schematic diagram show?

Question 8

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

Question 9

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

Question 10

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

Question 11

What is a wiring diagram?

Question 12

What is the difference between jogging and inching?

Question 13

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

Question 14

Fuses and circuit breakers are generally employed for ____________________ protection.

Question 15

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