F - Electrical Wiring, Lighting Circuits and Circuit Protection Flashcards

1
Q

Which of the following is Not a method of protecting a conductor from corrosion: heat shrinking tubing, liquid tape, flux, or electrical tape?

A

Flux

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2
Q

There is a discussion between two technicians about wiring harness and terminal repairs. Technician A thinks that rosin paste and rosin core solder would work best for electrical repairs. Technician B thinks that when a conductor needs to be replaced, it should never be replaced with a smaller gauge wire. Who is right?

A

Both Tech A and Tech B

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3
Q

All wiring harness connectors have:

A

Locking mechanisms, mating guides, and removable pins and sockets.

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4
Q

The purpose of a (?) is to pass electrical from one set of wires to another.

A

Conductor connector.

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5
Q

(?) must carry the large current flows required to start a high compression diesel engine.

A

Cranking circuits.

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6
Q

(?) on heavy equipment is used to transfer visual, audio, or digital information.

A

Communication wiring.

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7
Q

To open a wiring harness that is taped, a (?) can be used without damaging the conductor.

A

Seam ripper.

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8
Q

Always install hold-down brackets, clamps and wire ties to prevent wiring harness vibration or movement that could cause:

A

Chafing.

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9
Q

If conductor wires are not damaged, but the conductor insulation is damaged, it can be repaired using:

A

Heat shrink tubing.

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10
Q

An approved method of repairing copper conductors is:

A

Crimp splicing.

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11
Q

All electrical schematics are drawn in a (?) condition.

A

De-energized.

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12
Q

The components of an electrical switch that conducts the electrical current are called:

A

Contacts.

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13
Q

In a trailer clearance light circuit, the non-cycling circuit breaker keeps overheating and has to be manually reset. Tech A says that installing a cycling circuit breaker with higher amperage than specification will correct the problem. Tech B says installing a higher amperage cycling circuit breaker may cause damage to the wiring harness and components. Who is right.

A

Your girlfriend. Your girlfriend is always right.

Technician B

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14
Q

A new set of conductors must be connected to screw-secured trailer plug terminals. Tech A says that the conductor wire ends must be tinned with solder before they are inserted. Tech B says that before the plug is put into service, the conductor wires and screw-secured-connectors should be covered with dielectric grease to prevent corrosion. Who is right?

A

Both Tech A and Tech B

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15
Q

When a fuse in an electrical lighting circuit overheats and burns out quickly, the probable cause is:

A

Too much twerking.

A ground fault.

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16
Q

When two or more electrical lighting circuits operate abnormally at the same time, the probable cause is:

A

Aliens.

A short.

17
Q

When one lamp in an electrical lighting circuit burns dimly when compared to the other lamps in the same circuit the probable cause is:

A

An unwanted high resistance.

18
Q

When current stops flowing in part of an electrical lighting circuit, the probable cause is:

A

An open circuit.

19
Q

When testing a relay a cross the coil you receive a reading of OL what is that most likely cause of failure?

A

An open circuit.

20
Q

What are the four factors a technician must consider when repairing broken conductors or replacing damaged conductors?

A

Mechanical Strength - Connection must be physically strong.
Electrical Integrity - Conductor repair must allow required current flow.
Insulation - The repair must insulate the conductor to prevent corrosion or short circuits.
Security - The repair must be secure to prevent chaffing and vibration damage.