Aviation Knowledge Quiz: Mastering Aircraft Systems

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  • 1/15 Questions

    The ratio between the total airload imposed on the wing and the gross weight of an aircraft in flight is known as

    • load factor and has no relation with stall speed.
    • load factor and directly affects stall speed.
    • aspect load and directly affects stall speed.
    • Aspect load and indirectly affects stall speed. 
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About This Quiz

Welcome to our Aviation Knowledge Test, where you can delve into the fascinating world of aircraft systems! This quiz is designed to challenge your understanding of essential components and mechanisms that keep aircraft flying safely and efficiently. From engines and propellers to fuel systems and navigation equipment, test your expertise on a wide range of topics. Whether you're a seasoned pilot, an aviation enthusiast, or simply curious about aircraft operations, this quiz will put your knowledge to the test. So, fasten your seatbelt, prepare for takeoff, and embark on this thrilling journey to master aircraft systems. Enjoy the challenge and soar high with your aviation know-how!

Aviation Knowledge Quiz: Mastering Aircraft Systems - Quiz

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  • 2. 

    Detonation can be caused by

    • low engine temperatures.

    • Using a lower grade of fuel than recommended.

    • a "rich" mixture.

    • High engine temperatures. 

    Correct Answer
    A. Using a lower grade of fuel than recommended.
    Explanation
    Using a lower grade of fuel than recommended can cause detonation. Detonation refers to the uncontrolled combustion of fuel in the engine, resulting in a rapid increase in pressure and temperature. Lower-grade fuels have lower octane ratings, which means they are more prone to detonation. When the fuel detonates instead of burning smoothly, it can lead to knocking or pinging noises in the engine, reduced performance, and potential damage to the engine components. Therefore, using a lower grade of fuel than recommended can be a cause of detonation.

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  • 3. 

    Frequent inspections should be made of aircraft exhaust manifold-type heating systems to minimize the possibility of

    • a power loss due to back pressure in the exhaust system

    • A cold-running engine due to the heat withdrawn by the heater.

    • exhaust gases leaking into the cockpit.

    • A power backup to back pressure in the exhaust system. 

    Correct Answer
    A. exhaust gases leaking into the cockpit.
    Explanation
    Frequent inspections of aircraft exhaust manifold-type heating systems are necessary to minimize the possibility of exhaust gases leaking into the cockpit. This is important for the safety of the crew and passengers as exhaust gases can be harmful if inhaled. Regular inspections help identify any leaks or issues with the heating system, allowing for timely repairs or maintenance to prevent such leaks and ensure a safe environment inside the aircraft.

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  • 4. 

    What will occur if no leaning is made with the mixture control as the flight altitude increases?

    • The density of air entering the carburetor decreases and the amount of fuel remains constant.

    • The density of air entering the carburetor decreases and the amount of fuel increases.

    • The volume of air entering the carburetor decreases and the amount of fuel decreases.

    • The density of air entering the carburetor increases and the amount of fuel remains constant. 

    Correct Answer
    A. The density of air entering the carburetor decreases and the amount of fuel remains constant.
    Explanation
    As the flight altitude increases, the air density decreases. This means that less air is entering the carburetor. However, the amount of fuel remains constant, meaning that the fuel-to-air ratio becomes richer. This can lead to a rich mixture, which can cause engine performance issues such as decreased power and increased fuel consumption. Therefore, it is important to lean the mixture as the flight altitude increases to maintain the correct fuel-to-air ratio.

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  • 5. 

    If the ground wire between the magneto and the ignition switch becomes disconnected, the engine

    • will not operate on one magneto.

    • could accidently start if the propeller is moved with fuel in the cylinder.

    • Cannot be started with the switch in the BOTH position.

    • All of the above. 

    Correct Answer
    A. could accidently start if the propeller is moved with fuel in the cylinder.
    Explanation
    If the ground wire between the magneto and the ignition switch becomes disconnected, the engine could accidentally start if the propeller is moved with fuel in the cylinder. This is because the ground wire is responsible for grounding the magneto, which controls the ignition system. If the wire is disconnected, it can cause a spark in the magneto, leading to an accidental start if the propeller is moved and there is fuel in the cylinder.

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  • 6. 

    To produce the same lift while in ground effect as when out of ground effect, the airplane requires

    • a greater angle of attack.

    • the same angle of attack.

    • a lower angle of attack.

    • An upper angle of attack. 

    Correct Answer
    A. a lower angle of attack.
    Explanation
    When an airplane is in ground effect, it experiences a cushioning effect from the ground which reduces the amount of induced drag. This means that the airplane requires less lift to maintain level flight compared to when it is out of ground effect. To produce the same lift while in ground effect, the airplane needs to have a lower angle of attack. This is because a lower angle of attack generates less lift, compensating for the reduced drag and allowing the airplane to maintain the same lift force.

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  • 7. 

    Leaving the carburetor heat on during takeoff

    • will decrease the takeoff distance

    • will increase the ground roll.

    • leans the mixture for more power on takeoff.

    • None of the above. 

    Correct Answer
    A. will increase the ground roll.
    Explanation
    Leaving the carburetor heat on during takeoff will increase the ground roll because the carburetor heat is used to prevent ice formation in the carburetor. When the carburetor heat is on, it introduces warm air into the carburetor, which reduces the density of the air-fuel mixture and decreases engine power. This reduction in power can lead to a longer ground roll during takeoff as the aircraft may not be able to generate enough thrust to accelerate quickly.

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  • 8. 

    What is an operational difference between the turn coordinator and the turn-and-slip indicator? The turn coordinator

    • is always electric; the turn-and-slip indicator is always vacuum-driven.

    • Indicates roll rate, rate of turn, and coordination; the turn-and-slip indicator indicates rate of turn and coordination.

    • indicates bank angle only; the turn-and-slip indicator indicates rate of turn and coordination.

    • All of the above. 

    Correct Answer
    A. Indicates roll rate, rate of turn, and coordination; the turn-and-slip indicator indicates rate of turn and coordination.
    Explanation
    The operational difference between the turn coordinator and the turn-and-slip indicator is that the turn coordinator indicates roll rate, rate of turn, and coordination, while the turn-and-slip indicator only indicates rate of turn and coordination.

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  • 9. 

    Which statement is true about magnetic deviation of a compass? Deviation

    • is the same for all aircraft in the same locality.

    • varies over time as the agonic line shifts.

    • varies for different headings of the same aircraft.

    • None of the above. 

    Correct Answer
    A. varies for different headings of the same aircraft.
    Explanation
    The magnetic deviation of a compass refers to the angle between magnetic north and true north. This angle can vary depending on the heading of the aircraft. Therefore, the statement that "varies for different headings of the same aircraft" is true. The other options are incorrect because the deviation is not the same for all aircraft in the same locality, and it can also vary over time as the agonic line (the line where true north and magnetic north align) shifts.

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  • 10. 

    Propeller efficiency is the

    • actual distance a propeller advances in one revolution.

    • Ratio of geometric pitch to effective pitch.

    • Ratio of thrust horsepower to brake horsepower.

    • All of the above. 

    Correct Answer
    A. Ratio of thrust horsepower to brake horsepower.
    Explanation
    The correct answer is the ratio of thrust horsepower to brake horsepower. Propeller efficiency is a measure of how effectively a propeller converts the power of the engine into thrust. It is calculated by dividing the thrust horsepower (the power required to produce thrust) by the brake horsepower (the power output of the engine). This ratio gives an indication of how efficiently the propeller is converting the engine's power into useful thrust. The higher the ratio, the more efficient the propeller is.

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  • 11. 

    Which is correct with respect to rate and radius of turn for an airplane flown in a coordinated turn at a constant altitude?

    • To maintain a steady rate of turn, the angle of bank must be increased as the airspeed is decreased.

    • For a specific angle of bank and airspeed. The rate and radius of turn will not vary.

    • The faster the true airspeed, the faster the rate and larger the radius of turn regardless of the angle of bank.

    • None of the above. 

    Correct Answer
    A. For a specific angle of bank and airspeed. The rate and radius of turn will not vary.
    Explanation
    The correct answer is that for a specific angle of bank and airspeed, the rate and radius of turn will not vary. This means that as long as the angle of bank and airspeed remain constant, the rate at which the airplane turns and the size of the turn will remain consistent. This is because the angle of bank determines the rate of turn, while the airspeed determines the radius of turn. As long as these two factors remain constant, the rate and radius of turn will not change.

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  • 12. 

    If the same angle of attack is maintained in ground effect as when out of ground effect, lift will

    • increase and induced drag will decrease.

    • decrease and parasite drag will increase.

    • increase and induced drag will increase.

    • Decrease and parasite drag will decrease. 

    Correct Answer
    A. increase and induced drag will decrease.
    Explanation
    When an aircraft is in ground effect, it experiences an increase in lift and a decrease in induced drag. This is because the ground effect reduces the amount of air that can flow underneath the wings, resulting in a compression of the air and an increase in lift. At the same time, the reduced airflow also reduces the vortices that cause induced drag. Therefore, maintaining the same angle of attack in ground effect will result in an increase in lift and a decrease in induced drag.

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  • 13. 

    The most probable reason an engine continues to run after the ignition switch has been turned off is

    • a broken magneto ground wire.

    • a magneto ground wire is in contact with the engine casing.

    • carbon deposits glowing on the spark plugs.

    • The ignition and the switch becomes disconnected. 

    Correct Answer
    A. a broken magneto ground wire.
    Explanation
    A broken magneto ground wire can cause the engine to continue running after the ignition switch has been turned off. The magneto ground wire is responsible for grounding the magneto, which is a device that generates the spark needed for ignition. If the ground wire is broken, it may not be able to effectively ground the magneto, allowing it to continue producing sparks and keeping the engine running.

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  • 14. 

    A way to detect a broken magneto primary grounding lead is to

    • idle the engine and momentarily turn the ignition off.

    • run on one magneto, lean the mixture and look for a rise in manifold pressure.

    • add full power, while holding the brakes and momentarily turn off the ignition.

    • Idle the engine and look for a rise in manifold pressure.  

    Correct Answer
    A. idle the engine and momentarily turn the ignition off.
    Explanation
    Explanation: By idling the engine and momentarily turning the ignition off, the primary grounding lead of the magneto is disconnected. If the magneto is functioning properly, there should be a noticeable drop in RPM when the ignition is turned off. However, if the magneto primary grounding lead is broken, there will be no change in RPM when the ignition is turned off, indicating a faulty magneto.

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  • 15. 

    While holding the angle of bank constant in a level turn, if the rate of turn is varied the load factor would

    • vary depending upon speed and air density provided the resultant lift vector varies proportionately.

    • vary depending upon the resultant lift vector.

    • Remain constant regardless of air density and the resultant lift vector.

    • Increases the speed and air density in the resultant life vector. 

    Correct Answer
    A. Remain constant regardless of air density and the resultant lift vector.
    Explanation
    The load factor is the ratio of the lift force to the weight of the aircraft. In a level turn, the lift force must equal the weight of the aircraft in order to maintain altitude. Therefore, the load factor remains constant regardless of air density and the resultant lift vector. This is because the angle of bank is held constant, meaning the lift force is always perpendicular to the wings and directly opposes the weight of the aircraft. As long as the angle of bank is maintained, the load factor will not change.

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  • Current Version
  • Aug 04, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 26, 2023
    Quiz Created by
    Themes
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