Turbulence: DGCA Aviation Meteorology questions

Question 1

Maximum turbulence associated with the mountain waves is likely to be:

Accepted Answer

approximately one wavelength downwind of, and approximately level with, the top of the ridge

Answer

two wavelengths downwind and just above the surface

Answer

just below the tropopause above the ridge

Answer

down the lee side of the ridge and along the surface

Question 2

For the formation of mountain waves, the wind above the level of the ridge should:

Accepted Answer

increase with little change in direction

Answer

decrease or even reverse direction

Answer

increase initially then decrease

Answer

increase and then reverse in direction

Question 3

When flying in IMC in a region close to a range of hills 2000 ft high, in stable air and with wind direction at right angles to the axis of the range of hills, which of the following is probably the most dangerous practice:

Accepted Answer

flying parallel to the hills on the downwind side at flight level 40

Answer

flying towards the hills, into the wind, at flight level 65

Answer

flying towards the hills downwind at flight level 55

Answer

flying parallel to the hills on the upwind side at flight level 40

Question 4

Which of the following statements referring to jet streams is correct?

Accepted Answer

Turbulence associated with jet streams is probably associated with the rapid windshear in the vicinity of the jet

Answer

The maximum wind speed in a jet stream increases with increase of height up to the tropopause and remains constant thereafter

Answer

The core of a jet stream is usually located just below the tropopause in the colder air mass

Answer

The rate of change of wind speed at any given level is usually greatest on the warmer side of the jet

Question 5

The wind at square A3 is likely to be:

Accepted Answer

50 kt

Answer

35 kt

Answer

25 kt

Answer

light

Turbulence: DGCA Aviation Meteorology questions

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