DGCA Performance: Power Curves Questions
200 exam-style Power Curves questions for the DGCA Performance paper (CPL · ATPL · PPL). The first 12 are free below with answers and explanations — sign up free to practise all of them with progress tracking.
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Q1
If TAS is increased from 300 Kts to 400 Kts with no change in altitude, configuration, or weight, by what percentage will power required change?
- A Decrease by 1 35%.
- B Decrease by 35%.
- C lncrease by 135%.
- D lncrease by 235%.
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Correct answer: C. lncrease by 135%.
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Q2
What is curve A in the diagram at the right?
- A lnduced drag.
- B Total drag.
- C Profile drag
- D Form drag
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Correct answer: A. lnduced drag.
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Q3
What is the relationship between pewer required and TAS, as an aircraft accelerates above VMD?
- A Power required increases in direct proportion to TAS.
- B Power required increases in inverse proportion to TAS.
- C Power required increases in proportion to (TAS)3.
- D Power required increases in proportion to (TAS)2.
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Correct answer: C. Power required increases in proportion to (TAS)3.
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Q4
What is curve B in the diagram at the right?
- A lnduced drag.
- B Total drag.
- C Profile drag
- D Form drag
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Correct answer: B. Total drag.
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Q5
At what % of its stalling speed must a jet aircraft fly to achieve maximum endurance for a given fuel load?
- A 122%.
- B 132%.
- C 142%.
- D 152%.
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Correct answer: B. 132%.
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Q6
What iscurve C in the diagram at the right?
- A lnduced drag.
- B Total drag.
- C Profile drag.
- D Form drag
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Correct answer: C. Profile drag.
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Q7
For a piston aircraft at constant weight, angle of attack, and configuration, what will be the effect of increasing altitude?
- A lncreased power and TAS will be required.
- B lncreased power will be required but at the same TAS.
- C Lower power will be required at the same TAS.
- D The same power will be required but at an increased TAS.
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Correct answer: A. lncreased power and TAS will be required.
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Q8
What is point D in the diagram at the right?
- A Minimum induced power.
- B Minimum total drag.
- C Minimum profile drag
- D Minimum power required
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Correct answer: B. Minimum total drag.
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Q9
The point where Drag coefficient/Lift coefficient is a minimum is
- A at stalling speed (VS).
- B the lowest point of the drag curve
- C on the ""back side"" of the drag curve.
- D the point where a tangent from the origin touches the drag curve.
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Correct answer: D. the point where a tangent from the origin touches the drag curve.
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Q10
For a piston aircraft at a constant altitude, angle of attack, and configuration, what will be the effect of increasing weight?
- A More power will be required but at the same TAS.
- B More power will be required but at a higher TAS.
- C The same power will be required but at a higher TAS.
- D More power will be required but at a lower TAS.
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Correct answer: B. More power will be required but at a higher TAS.
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Q11
What is the airspeed at point D in the diagram?
- A V MDI.
- B V IMD.
- C V MDP.
- D V MP.
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Correct answer: B. V IMD.
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Q12
The point at which a tangent out of the origin touches the power required curve
- A is the point where Drag coefficient is a minimum.
- B is the point where the Lift to Drag ratio is a maximum.
- C is the maximum drag speed
- D is the point where the Lift to Drag ratio is a minimum.
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Correct answer: B. is the point where the Lift to Drag ratio is a maximum.
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