Recreational Vehicle (RV) Technician Practice Test

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Get ready for the RV Technician Exam. Study with flashcards and multiple-choice questions. Each query comes with hints and explanations. Prepare for success!

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What does it mean when a solenoid valve on the propane system is described as normally closed?

Power to the valve is not required to keep it closed
Power to the valve is needed to keep the valve open
The valve remains open at all times
The valve automatically opens when there is no flow

The correct answer is: Power to the valve is needed to keep the valve open

When a solenoid valve is described as normally closed, it means that the valve is in a closed state when there is no electrical power supplied to it. In this setup, power is required to change the state of the valve; specifically, when electricity is applied, the solenoid activates, causing the valve to open and allowing propane to flow through the system. This design is essential for safety in propane systems because it ensures that gas does not flow unless there is an active command or need, reducing the risk of leaks when the system is turned off or during malfunction situations. Therefore, understanding that the valve's operation is contingent upon electrical power provides insight into the design's safety features and operational mechanics.