Volume 2 CDC 2A651 ( Q

15 Questions | Attempts: 186
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  • 1/15 Questions

    Which section of a jet engine keeps the compressor rotating?

    • Turbine.
    • Exhaust.
    • Diffuser
    • Combustion.
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  • 2. 

    To measure barometric pressure, you would use a

    • Potentiometer.

    • Psychrometer

    • Pyrometer.

    • Barometer.

    Correct Answer
    A. Barometer.
  • 3. 

    Which section of a jet engine introduces and burns fuel?

    • Turbine.

    • Diffuser.

    • Compressor.

    • Combustion.

    Correct Answer
    A. Combustion.
  • 4. 

    What is the sea-level atmospheric pressure at "standard day" conditions?

    • 13.5 psi

    • 14.7 psi

    • 49.94

    • 40.55 psi

    Correct Answer
    A. 14.7 psi
  • 5. 

    "The combination of decreased pressure above an airfoil, and the increased pressure below the airfoil produces lift" is best described by

    • Bernoulli's principle.

    • Newton's first law of motion

    • Newton's second law of motion

    • Newton's third law of motion

    Correct Answer
    A. Bernoulli's principle.
  • 6. 

    Which engine component meters fuel for combustion?

    • P&D valve.

    • Fuel Pump.

    • Fuel control.

    • Fuel nozzles.

    Correct Answer
    A. Fuel control.
  • 7. 

    Which type of duct would decrease the velocity and increase the pressure of a gas as it passes through?

    • Elbow.

    • Straight.

    • Divergent.

    • Convergent.

    Correct Answer
    A. Divergent.
  • 8. 

    The tendency of an object at rest to remain at rest and the tendency of an object in motion to continue its motion in a straight line at the same speed is called

    • Energy.

    • Inertia.

    • Friction

    • Potential.

    Correct Answer
    A. Inertia.
  • 9. 

    What directs the gases onto the first-stage turbine wheel blades in a jet engine?

    • Flameholder.

    • Combustion chamber.

    • Turbine wheel blades.

    • Turbine stator.

    Correct Answer
    A. Turbine stator.
  • 10. 

    The heat content per pound of kerosene is how many Btu's?

    • 10,500

    • 15,000

    • 18,500

    • 40,000

    Correct Answer
    A. 18,500
  • 11. 

    Which method of producing thrust does a turboprop engine use?

    • Accelerating a large mass of air by a small amount.

    • Moving a small quantity of air through a large velocity change

    • Using the same working fluid for propulsive force as that used within the engine.

    Correct Answer
    A. Accelerating a large mass of air by a small amount.
  • 12. 

    Which type of horsepower is delivered to the propeller for useful work?

    • Brake.

    • Indicated.

    • Frictional.

    • Equivalent shaft.

    Correct Answer
    A. Brake.
  • 13. 

    When two or more turbine wheels are used in a jet engine,which component

    • Diffuser

    • Jet nozzle.

    • Combustion chamber

    • Turbine stator

    Correct Answer
    A. Turbine stator
  • 14. 

    An unbalanced force on a body produces  or tends to produce an acceleration in the direction of the force and that the acceleration, if any, is directly proportional to the force and inversely proportional to the mass pf the body. " this statement is

    • Bernoulli's principle.

    • Newton's first law of motion.

    • Newton's second law of motion.

    • Newton's third law of motion

    Correct Answer
    A. Newton's second law of motion.
  • 15. 

    What effect does a divergent design of a diffuser have on air pressure?

    • Increases pressure.

    • Decreases pressure.

    • Has no effect on pressure

    • Results in pressure fluctuations.

    Correct Answer
    A. Decreases pressure.

Quiz Review Timeline (Updated): Mar 15, 2022 +

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

  • Current Version
  • Mar 15, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 20, 2010
    Quiz Created by
    Vison
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