Question 1

Control circuits, relay or PLC, should have ____ to identify logic and actuator status.&#10;A) visual indicators&#10;B) analog meters&#10;C) ohmmeters&#10;D) user manuals

Accepted Answer

Visual indicators are the best choice to identify logic and actuator status as they provide a clear and easy-to-understand display of the system's status in real-time. Analog meters or ohmmeters may not provide a direct indication of logic or actuator status and may require additional interpretation by the user. User manuals are helpful for understanding the overall system and troubleshooting, but do not provide real-time feedback on the system's status.

Question 2

____ is one result of low voltage that may not be noticed immediately in the functioning of a machine.&#10;A) Shorting&#10;B) Heat&#10;C) Loose connections&#10;D) Improper grounding

Accepted Answer

Heat is one result of low voltage that may not be noticed immediately in the functioning of a machine. Low voltage can cause a motor to work harder, which generates more heat, and over time can lead to premature failure of the motor or other components.

Question 3

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

Accepted Answer

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.

Accepted Answer

The answer of Another problem that may occur with a...

Question 5

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

Accepted Answer

Effective troubleshooting begins with identifying the root cause of the problem before replacing components. Replacing components without identifying the cause may result in unnecessary expense and may not solve the issue.

Question 6

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

Accepted Answer

Most solenoid coils burn out due to too much current flowing through them, overheating the wire and causing it to fail. This is typically caused by a problem with the electrical system, such as a faulty relay, switch, or wiring. It is not usually due to a defect in the coil itself.

Question 7

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

Accepted Answer

The answer of Opens in a common line may be...

Question 8

The use of ____ in place of solid conductors has, in general, improved the loose connection problem.&#10;A) fuses&#10;B) wire markers&#10;C) fiber optic cables&#10;D) stranded conductors

Accepted Answer

Stranded conductors have multiple smaller wires twisted together, which provides flexibility and allows them to maintain contact even when subjected to movement or vibration, thus improving the loose connection problem. Fuses, wire markers, and fiber optic cables do not address this particular issue.

Question 9

When measuring an AC signal, a DMM will display the ____ value of the signal.&#10;A) minimum&#10;B) maximum&#10;C) mode&#10;D) rms

Accepted Answer

The rms value of an AC signal is the most accurate representation of its effective voltage or current, and is the standard measurement for AC signals. The other choices (minimum, maximum, mode) are less useful in accurately describing the signal's behavior.

Question 10

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

Accepted Answer

Successfully troubleshooting requires identifying and isolating the problem area to prevent confusion with other circuitry that may not be related to the issue.

Deck 19: Troubleshooting