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Hydraulic Power Systems Quiz

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Questions and Answers

What is the main role of pressure switches in a hydraulic system?

To operate the cockpit fire panel

To automatically refill the hydraulic reservoir

To increase the hydraulic fluid temperature

To detect low pump pressure output (correct)

Which statement about engine-driven pumps is accurate?

They are variable displacement pumps connected to the engine. (correct)

They are permanently disconnected from the engine.

They operate independently of the aircraft's electrical system.

They are only used in electric-powered aircraft.

What function does the engine pump fire shutoff valve serve?

To maintain continuous hydraulic pressure.

To enhance the engine's hydraulic power output.

To initiate hydraulic fluid cooling.

To cut off hydraulic fluid supply during an engine fire. (correct)

How is the engine pump fire shutoff valve activated?

<p>Electrically by the fire push buttons in the cockpit</p> Signup and view all the answers

What is usually indicated by low pump pressure output?

<p>Failure in one or more pumps</p> Signup and view all the answers

Study Notes

Hydraulic Power Sources

Engine-driven pumps (EDP) are the primary source of hydraulic power.
Electric and air-driven pumps are also used.
EDPs are variable displacement pumps permanently connected to the engine.

Low Pump Pressure Detection

Low pump pressure indicates pump failure.
Pressure switches on the output side of system pumps detect low pressure.
Pressure switches send an indication to the cockpit when low pressure is detected.

Engine Fire Shutoff Valve

To stop the flow of hydraulic fluid to the EDP in case of engine fire, a shutoff valve is installed between the reservoir and the EDP.
The shutoff valve is operated by an electric motor.
The valve is activated by fire push buttons or fire handles on the cockpit fire panel.
Each shutoff valve has a valve position indicator for clear visibility.

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Description

Test your knowledge on hydraulic power sources, low pump pressure detection, and engine fire shutoff valves. This quiz covers engine-driven pumps, pressure switches, and safety mechanisms related to hydraulic systems. Ideal for students and professionals in aviation and hydraulic engineering.