Recreational Vehicle (RV) Technician Practice Test

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Prepare for the Recreational Vehicle (RV) Technician Test. Utilize interactive quizzes and in-depth questions with explanations. Get ready to become certified!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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If a circuit is blowing a fuse consistently, what is a likely cause?

Overloaded circuit
Open circuit
Circuit has a short
Faulty fuse

The correct answer is: Circuit has a short

A circuit consistently blowing a fuse is most often attributed to a short circuit. A short circuit occurs when there is an unintended path for current to travel, allowing it to flow in an uncontrolled manner. This can happen when wires are frayed, damaged, or improperly connected, creating a low-resistance path that bypasses the intended circuit. As a result, a significantly higher current than the circuit is designed to handle can flow through, leading to the fuse blowing as a protective measure to prevent damage or potential fire hazards. In contrast, an overloaded circuit refers to a situation where too many devices are drawing current from the same circuit, which could also lead to a blown fuse. However, it wouldn’t necessarily occur consistently unless the added load remains the same. An open circuit would cause a complete interruption in electrical flow, leading to devices not functioning but wouldn't blow a fuse. A faulty fuse may blow without a short circuit or overload occurring, but it typically wouldn’t be the cause of consistent fuse failures, as the symptoms presented indicate an underlying issue within the circuit itself.