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Aircraft Fuel System Components

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Questions and Answers

What is the primary function of the fuel dump system?

To provide backup fuel delivery
To jettison fuel in an emergency situation (correct)
To transfer fuel from one tank to another
To monitor fuel temperature and quantity

What type of valve is used to shut off fuel flow in the event of a system failure?

Pressure operated shutoff valve (correct)
Electrical actuated valve
Float control valve
Mechanically actuated valve

What is the purpose of the crossfeed/transfer valve?

To shut off fuel flow in an emergency situation
To monitor fuel pressure and quantity
To boost fuel pressure during refueling
To transfer fuel from one tank to another (correct)

Where are the fuel pump valves typically located in the cockpit?

Flight engineer's lower panel (A) Signup and view all the answers

What is the purpose of the float control valve in the fuel transfer system?

To shut off fuel flow when a tank is full (D) Signup and view all the answers

What is the purpose of the boost pump in the fuel transfer system?

To increase fuel pressure during refueling (A) Signup and view all the answers

What must be ensured in the design of fuel tank vents and fuel transfer systems?

That no structural damage occurs to any airplane component due to overfilling of any tank (A) Signup and view all the answers

What is the minimum quantity of unusable fuel supply that must be established for each tank?

That at which the first evidence of malfunctioning appears under the most adverse fuel feed condition (A) Signup and view all the answers

What is the purpose of fuel flowmeters on an aircraft?

To measure the fuel flow rate during testing (B) Signup and view all the answers

What is the minimum fuel flow rate required for gravity-flow fuel systems?

150 percent of the takeoff fuel consumption (D) Signup and view all the answers

Why is the fuel system tested during aircraft operation?

To ensure proper engine operation (D) Signup and view all the answers

What is the effect of a pump failure on the usable fuel quantity?

It decreases the usable fuel quantity (B) Signup and view all the answers

What is the purpose of the defueling valve?

To allow fuel to exit the aircraft during defueling (C) Signup and view all the answers

How is fuel transferred from one tank to another on board the aircraft?

Through a system of plumbing and valves (A) Signup and view all the answers

What is the purpose of the automatic shutoff systems?

To close tank fueling valves before the tanks overfill or are damaged (A) Signup and view all the answers

What happens when the defueling valve is opened?

Fuel is drawn out of the aircraft into the fuel truck (D) Signup and view all the answers

What is the purpose of the fuel boost pumps?

To move fuel into a manifold for transfer (C) Signup and view all the answers

What is the function of the refueling panel?

To monitor progress during refueling or defueling operations (D) Signup and view all the answers

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