Meteorology - ATPL - Airline Transport Pilot Licence

Question 1

A blocking anticyclone in the northern hemisphere is

Accepted Answer

A warm anticyclone/quasi stationary/situated between 50°N and 70°N

Answer

Quasi stationary/situated between 50°N and 70°N/a cold anticyclone

Answer

A cold anticyclone/steering depressions/situated over Scandinavia

Answer

Situated between 50°N and 70°N/a cold anticyclone/steering depressions

Question 2

On this schematic map, what is the name of the easterly jet stream marked A across southern India?

Accepted Answer

Tropical Easterly Jet.

Answer

Polar front jet stream.

Answer

Arctic jet stream.

Answer

Sub-tropical jet stream.

Question 3

Which of these conditions presents the greatest conventional airframe-icing risk from supercooled liquid water?

Accepted Answer

Level flight in supercooled liquid freezing rain below cloud, with the outside air and exposed airframe below 0°C.

Answer

Flight in an ice-crystal-only cirrus layer, with no supercooled liquid water present.

Answer

Flight in drizzle while both the outside air and exposed airframe are above 0°C.

Answer

Flight in dry snowfall without supercooled liquid water present.

Question 4

Which process produces freezing rain?

Accepted Answer

Rain falls into below-freezing air but remains liquid and supercooled, then freezes on contact with exposed surfaces.

Answer

Snow melts into rain aloft, then the drops refreeze completely into ice pellets before reaching exposed surfaces.

Answer

Ice crystals remain entirely frozen as they fall through a sub-zero layer and reach exposed surfaces.

Answer

Snow grains melt into rain that remains above freezing until it reaches exposed surfaces.

Question 5

What is the correct term for the descending air flow in a large high pressure area?

Accepted Answer

Subsidence.

Answer

Advection.

Answer

Convergence.

Answer

Convection.

Question 6

In which stage of the life cycle of a single thunderstorm cell occur both up- and downdrafts simultaneously?

Accepted Answer

Mature stage

Answer

In all stages

Answer

Dissipating stage

Answer

Cumulus stage

Question 7

When a moist frontal air mass is lifted on the windward side of a mountain range, how is its cloud and precipitation activity usually affected?

Accepted Answer

Strengthens 'upwind' of the mountains.

Answer

Ceases immediately.

Answer

Is not disturbed by the mountains.

Answer

Decreases when it reaches the mountains.

Question 8

In the typical southwest-monsoon upper-air circulation during August, a flight from Mumbai (19°N 073°E) to Bangkok (13°N 100°E) at FL370 is most likely to experience predominantly:

Accepted Answer

Headwinds

Answer

Strong northerly winds

Answer

Tailwinds

Answer

Light winds diagonal to the route

Question 9

A temperature of +15°C is recorded at an altitude of 500 metres above sea level. If the vertical temperature gradient is that of a standard atmosphere, what will the temperature be at the summit of a mountain, 2500 metres above sea level?

Accepted Answer

+2°C

Answer

0°C

Answer

+4°C

Answer

-2°C

Question 10

Which of the following conditions is most conducive to significant conventional airframe icing from supercooled liquid water?

Accepted Answer

A nimbostratus layer below freezing that contains abundant supercooled liquid water droplets able to freeze on the airframe.

Answer

Cold clear air with no visible moisture.

Answer

Warm clear air above freezing, with no liquid cloud or precipitation.

Answer

A cloud composed almost entirely of ice crystals, with little or no supercooled liquid water.

Exam questions Meteorology - ATPL - Airline Transport Pilot Licence

ATPL - Airline Transport Pilot Licence: Meteorology 10 Questions no time limit

Exam questions Meteorology - ATPL - Airline Transport Pilot Licence

ATPL - Airline Transport Pilot Licence: Meteorology 10 Questions no time limit

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