Deck 19: Troubleshooting

Question 1

Control circuits, relay or PLC, should have ____ to identify logic and actuator status.

A) visual indicators
B) analog meters
C) ohmmeters
D) user manuals

Answer 1

A

Question 2

____ is one result of low voltage that may not be noticed immediately in the functioning of a machine.

A) Shorting
B) Heat
C) Loose connections
D) Improper grounding

Answer 2

B

Question 3

In cases in which electrical heating is used, low voltage will cause the heat to be reduced by ____________________ of the voltage.

Answer 3

the square

Question 4

Another problem that may occur with a double-pole, double-break contact is ____________________, that is, one contact of the double break travels across to the opposite contact, but the other remains in its original position.

Question 5

Effective troubleshooting begins with replacing components, one at a time.

Question 6

Most solenoid coils burn out because of a defect in the coil.

Question 7

Opens in a common line may be the result of an omitted ____________________ on the terminal block.

Question 8

The use of ____ in place of solid conductors has, in general, improved the loose connection problem.

A) fuses
B) wire markers
C) fiber optic cables
D) stranded conductors

Question 9

When measuring an AC signal, a DMM will display the ____ value of the signal.

A) minimum
B) maximum
C) mode
D) rms

Question 10

Success in troubleshooting results from the ability to segregate the problem area from other unrelated circuitry.