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DGCA Technical General: Stalling Questions

165 exam-style Stalling questions for the DGCA Technical Generalpaper (CPL & ATPL). The first 12 are free below with answers and explanations — sign up free to practise all of them with progress tracking.

  1. Q1

    What % of CL max would a wing produce when flying at 1.3 Vs?

    • A77%
    • B59%
    • C120%
    • D98%
    Show answer

    Correct answer: B. 59%

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  2. Q2

    How does secondary stall occurs?

    • A Sudden change of flight path excessive control movement
    • B Secondary stall occurs with no warning
    • CResults from trying to hasten the stall recovery
    Show answer

    Correct answer: C. Results from trying to hasten the stall recovery

    A secondary stall results from trying to hasten the recovery from an initial stall: back pressure is reapplied too soon or too aggressively before flying speed is regained, and the wing exceeds its critical angle of attack again. Correct recovery requires reducing angle of attack and allowing speed to build before resuming the climb.

  3. Q3

    What is the relationship in straight and level flight between the CL at any given speed and CL Max?

    • ACL = 100% Cl Max
    • BCL = CL Max (1/(V/VS)) x 100%.
    • CCL = CL Max (Vs²/V²) x 100%.
    • DCL = CL Max (V/VS) x 100%.
    Show answer

    Correct answer: C. CL = CL Max (Vs²/V²) x 100%.

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  4. Q4

    If the C of G is moved forward what will be the effect on stalling speed?

    • ANo effect
    • BIncrease
    • CDecrease
    • DIncrease or decrease depending on aircraft weight
    Show answer

    Correct answer: B. Increase

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  5. Q5

    If the C of G of an aircraft is moved forward what will be the effect on longitudinal, directional and lateral stability?

    • ANo effect on longitudinal, increase lateral and directional.
    • BIncrease longitudinal and lateral, no effect on directional.
    • CDecrease lateral, increase directional and longitudinal.
    • DIncrease longitudinal and directional, no effect on lateral.
    Show answer

    Correct answer: D. Increase longitudinal and directional, no effect on lateral.

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  6. Q6

    If the C of G is moved forward what will be the effect on longitudinal, directional and lateral manoeuvrability.

    • ANo effect on any.
    • BIncrease lateral, decrease longitudinal and directional.
    • CDecrease lateral and directional, increase longitudinal.
    • DDecrease longitudinal and directional, no effect on lateral.
    Show answer

    Correct answer: D. Decrease longitudinal and directional, no effect on lateral.

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  7. Q7

    What is incipient stall?

    • AWing root is stalled but not completely
    • BLeading edge is stalled but not completely
    • C Wing has begun to stall in few areas but not completely
    Show answer

    Correct answer: C. Wing has begun to stall in few areas but not completely

    An incipient stall is the very beginning of the stall, in which the airflow has started to separate over a few areas of the wing while the wing as a whole is not yet fully stalled; recognising it allows recovery with minimal height loss.

  8. Q8

    If the weight of an aircraft is doubled what will be the effect on its stalling speed?

    • AIt will be doubled.
    • BIt will be halved.
    • CIt will be increased by approximately 41 %.
    • DIt will be increased by approximately 50%.
    Show answer

    Correct answer: C. It will be increased by approximately 41 %.

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  9. Q9

    A JAR certificated commercial passenger aircraft is flying in straight and level flight when the stall warning system activates the stick shaker. What will be its CL as a percentage of CL Max?

    • A81%
    • B85%
    • C91%
    • D95%
    Show answer

    Correct answer: C. 91%

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  10. Q10

    Which of the following statements are true of an aircraft as it climbs to high altitude at constant IAS?

    • AIts TAS will increase as a proportion to its IAS until it reaches Merit
    • BIts indicated stalling speed will increase throughout most of the climb then reduce as it reaches Merit
    • CIts indicated stalling speed will decrease throughout most of the climb then increase as it reaches Merit
    • DIts indicated stalling speed will remain constant throughout most of the climb then increase as it reaches Merit
    Show answer

    Correct answer: D. Its indicated stalling speed will remain constant throughout most of the climb then increase as it reaches Merit

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  11. Q11

    The sketch below represents a typical whole aircraft L:D polar diagram. Which of the points marked on it correspond to the low speed stall condition?

    • AA
    • BB
    • CC
    • DD
    Show answer

    Correct answer: A. A

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  12. Q12

    The sketch below represents a typical whole aircraft L:D polar diagram. Which of the points marked on it correspond to the best L:D ratio and at what speed does this occur?

    • AA
    • BB
    • CC
    • DD
    Show answer

    Correct answer: B. B

    This Explanation is Coming Soon

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