DGCA Performance: Atmosphere & Airfield Questions
158 exam-style Atmosphere & Airfield questions for the DGCA Performancepaper (CPL & ATPL). The first 12 are free below with answers and explanations — sign up free to practise all of them with progress tracking.
- Q1
If pressure altitude is 30000 ft amsl and mach number is 0.84, what is the ISA TAT?
- A-10.
- B10.
- C-12.
- D12.
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Correct answer: C. -12.
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- Q2
Maximum allowable clearway length is limited by?
- A50% of TODA.
- B50% of TORA.
- CMinimum acceptable load bearing strength.
- D150% of Stopway.
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Correct answer: B. 50% of TORA.
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- Q3
If indicated TAT is-10, pressure altitude is 30000 ft amsl, and mach number is 0.84, What is the temperature deviation?
- A2.
- B-2.
- C4.
- D-4.
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Correct answer: A. 2.
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- Q4
Density altitude is the
- Aheight above the surface
- Baltitude reference to the standard datum plane
- Caltitude read directly from the altimeter
- Dpressure altitude corrected for 'non standard' temperature
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Correct answer: D. pressure altitude corrected for 'non standard' temperature
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- Q5
Maximum allowable stopway length is limited by?
- A50% of TODA.
- B50% of TORA.
- CMinimum acceptable load bearing strength.
- D50% of runway.
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Correct answer: C. Minimum acceptable load bearing strength.
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- Q6
The Density Altitude
- Ais equal to the pressure altitude.
- Bis used to calculate the FL above the Transition Altitude.
- Cis used to establish minimum clearance of 2.000 feet over mountains.
- Dis used to determine the aeroplane performance.
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Correct answer: D. is used to determine the aeroplane performance.
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- Q7
Which of the following combinations most reduces the take-off and climb performance of an aircraft?
- Ahigh temperature and high pressure
- Blow temperature and high pressure
- Clow temperature and low pressure
- Dhigh temperature and low pressure
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Correct answer: D. high temperature and low pressure
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- Q8
If pressure altitude is 40000 ft amsl, indicated TAT is -29, what is the mach number assuming ISA conditions.
- A0.7.
- B0.75.
- C0.8.
- D0.85.
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Correct answer: C. 0.8.
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- Q9
Density altitude is:
- Athe true altitude of the aircraft
- Bthe altitude in the standard atmosphere corresponding to the actual conditions
- Cthe indicated altitude on the altimeter
- Dused to calculate en-route safety altitudes
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Correct answer: B. the altitude in the standard atmosphere corresponding to the actual conditions
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- Q10
Stopway slope must be?
- ASame as the runway.
- BNot more than 125% of that of runway.
- CLess than that of runway.
- DMore than that of runway.
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Correct answer: A. Same as the runway.
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- Q11
If mach number is 0.88 and TAT is 4, what is the pressure altitude in the iqternational standard atmosphere?
- A22000 ft
- B24000 ft.
- C26000 ft.
- D28000 ft.
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Correct answer: D. 28000 ft.
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- Q12
Stopway semi-width must be?
- AAt least 150% that of the runway.
- BAt least 95 m.
- CAt least 60 m.
- DAt least the same as the runway.
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Correct answer: D. At least the same as the runway.
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