What is the effect of moving the emergency electrical cutoff to CUTOFF on the 2000 psi isolation valve?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Mission Helicopter-65E Test with flashcards and multiple choice questions. Each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the effect of moving the emergency electrical cutoff to CUTOFF on the 2000 psi isolation valve?

Explanation:
The important idea here is how a solenoid-operated isolation valve behaves when power is removed. When you move the emergency electrical cutoff to CUTOFF, power to the valve’s actuator is cut. This valve is designed with a spring return to its default position when de-energized, and that default is open. So, de-energizing the solenoid allows the spring to push the valve to the open position, causing the 2000 psi isolation valve to open. The other options aren’t correct because this design doesn’t keep the valve closed, stay unchanged, or jam simply from cutting power; de-energizing drives it to the open position.

The important idea here is how a solenoid-operated isolation valve behaves when power is removed. When you move the emergency electrical cutoff to CUTOFF, power to the valve’s actuator is cut. This valve is designed with a spring return to its default position when de-energized, and that default is open. So, de-energizing the solenoid allows the spring to push the valve to the open position, causing the 2000 psi isolation valve to open. The other options aren’t correct because this design doesn’t keep the valve closed, stay unchanged, or jam simply from cutting power; de-energizing drives it to the open position.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy