What's Your Knowledge In Propulsion Of Aircrafts?

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  • 1/10 Questions

    What is the Major purpose of the fins which are placed around the cylinder head of an air-cooled engine?

    • To reduce the weight of the Engine
    • To allow heat to escape quickly
    • To reduce air from the engine compartment
    • To increase the air outlet in the cylinder
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About This Quiz

Propulsion of Aircraft is an aircraft engine that generates a thrust, which is typically a propeller or a propulsive nozzle. These engines produce balance to drag of the airplane when the airplane is cruising and to exceed the drag of the airplane for the airplane to accelerate. How well do you understand the Propulsion of Aircraft? Find out by taking this quiz.

Whats Your Knowledge In Propulsion Of Aircrafts? - Quiz

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  • 2. 
    The basic function of the constant speed unit (CSU) in an aircraft propeller system is to? - ProProfs

    The basic function of the constant speed unit (CSU) in an aircraft propeller system is to?

    • Feather the propeller engine

    • Maintain a selected engine speed power within the propeller

    • Maintain a constant propeller rate

    • Decrease the speed limit in the propeller

    Correct Answer
    A. Maintain a selected engine speed power within the propeller
    Explanation
    The constant speed unit (CSU) in an aircraft propeller system is responsible for maintaining a selected engine speed power within the propeller. This means that it adjusts the pitch of the propeller blades to maintain a constant speed and prevent overspeeding or underspeeding of the engine. By controlling the propeller speed, the CSU ensures efficient engine operation and optimal performance of the aircraft.

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  • 3. 
    One of the purposes of gudgeon pins in a piston engine is to? - ProProfs

    One of the purposes of gudgeon pins in a piston engine is to?

    • Attach the pistons to their connecting rods

    • Fasten the two edges of the piston

    • Retain the Valves in the guides

    • Hold the sparking plugs in place

    Correct Answer
    A. Attach the pistons to their connecting rods
    Explanation
    Gudgeon pins, also known as wrist pins, play a crucial role in attaching the pistons to their connecting rods in a piston engine. These pins go through the small end of the connecting rod and the piston, allowing them to move in unison. The gudgeon pins provide a pivot point for the connecting rod, allowing it to transfer the reciprocating motion of the piston to the rotational motion of the crankshaft. This connection is vital for the proper functioning of the engine, as it ensures that the piston and connecting rod work together harmoniously to convert the energy from combustion into mechanical power.

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  • 4. 
    The process whereby airflow over the propeller blades of a failed engine keeps the propeller turning is called? - ProProfs

    The process whereby airflow over the propeller blades of a failed engine keeps the propeller turning is called?

    • Wind milling

    • Propeller braking

    • Reverse control

    • Emergency braking

    Correct Answer
    A. Wind milling
    Explanation
    Wind milling refers to the process where the airflow over the propeller blades of a failed engine keeps the propeller turning. This occurs due to the force of the wind pushing against the blades, causing them to rotate. This phenomenon can happen when an engine fails or is shut down, and the aircraft is still in motion. The term "wind milling" accurately describes this process as it involves the propeller blades rotating due to the wind's force.

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  • 5. 
    The purpose of the distributor in a piston aero engine, is to distribute?   - ProProfs

    The purpose of the distributor in a piston aero engine, is to distribute?  

    • Cooling the major engines

    • High voltage electrical impulse to all cylinders

    • Low voltage electrical impulse to all cylinders

    • Cooling air to the major parts of the cooling propeller.

    Correct Answer
    A. High voltage electrical impulse to all cylinders
    Explanation
    The purpose of the distributor in a piston aero engine is to distribute high voltage electrical impulse to all cylinders. This is important because it ensures that each cylinder receives the necessary spark at the correct time to ignite the fuel-air mixture and generate power. The distributor acts as a central hub, receiving electrical current from the ignition system and then distributing it to each spark plug in the cylinders. This ensures that the engine runs smoothly and efficiently.

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  • 6. 
    The Blade Twist in the Propeller helps? - ProProfs

    The Blade Twist in the Propeller helps?

    • Even out the trust along the length of the blade

    • Reduce noise levels

    • Make propelling Easier

    • Increase the friction between the blades

    Correct Answer
    A. Even out the trust along the length of the blade
    Explanation
    The blade twist in the propeller helps to even out the thrust along the length of the blade. This is important because it ensures that the propeller generates a consistent amount of thrust throughout its rotation, resulting in smoother and more efficient propulsion. By distributing the thrust evenly, the propeller can maintain a balanced and stable performance, which is crucial for aircraft and other vehicles that rely on propellers for propulsion.

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  • 7. 
    After-burning process in a jet engine requires combustion of additional fuel in the?   - ProProfs

    After-burning process in a jet engine requires combustion of additional fuel in the?  

    • Jet pipe

    • Jet Fuse

    • Compressor

    • Combustion Chamber

    Correct Answer
    A. Jet pipe
    Explanation
    The after-burning process in a jet engine requires the combustion of additional fuel in the jet pipe. The jet pipe is a part of the engine that is located after the combustion chamber. It is responsible for directing the exhaust gases out of the engine and creating thrust. By injecting additional fuel into the jet pipe and igniting it, the after-burning process increases the temperature and velocity of the exhaust gases, resulting in a boost in thrust and overall engine performance.

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  • 8. 
    The largest obtainable pitch angle on a variable pitch propeller is referred to as? - ProProfs

    The largest obtainable pitch angle on a variable pitch propeller is referred to as?

    • Take off pitch

    • Landing Pitch

    • Optimum pitch

    • Coarse Pitch

    Correct Answer
    A. Coarse Pitch
    Explanation
    The largest obtainable pitch angle on a variable pitch propeller is referred to as "Coarse Pitch." This term is used to describe the propeller blades being set at a larger angle, which allows for increased thrust and power during takeoff or when the engine needs to operate at high RPM. The coarse pitch setting helps to generate more lift and acceleration, making it suitable for situations where maximum performance is required.

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  • 9. 
    The two main major of cooling piston aero engines are liquid cooling and air cooling. Which of the following is a major advantage of air cooling over liquid cooling? - ProProfs

    The two main major of cooling piston aero engines are liquid cooling and air cooling. Which of the following is a major advantage of air cooling over liquid cooling?

    • Its cheaper to produce

    • It maintains temperature better over long distance

    • The engine can be easily streamlined

    • Longer engine life

    Correct Answer
    A. Its cheaper to produce
    Explanation
    Air cooling is a major advantage over liquid cooling because it is cheaper to produce. This means that the cost of manufacturing an air-cooled piston aero engine is lower compared to a liquid-cooled engine. This cost advantage can make air-cooled engines more accessible and affordable for manufacturers and customers alike.

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  • 10. 
    Which of these is a turbojet engine? - ProProfs

    Which of these is a turbojet engine?

    • Pegasus

    • Olympus 593

    • Hermes

    • Aramis

    Correct Answer
    A. Olympus 593
    Explanation
    The Olympus 593 is a turbojet engine.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 14, 2018
    Quiz Created by
    Gregorynaomi
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