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Meteorology 1

Description: Online Pilot Aviation Preparation and Practice Test and Study Material
Number of Questions: 25
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What is the ISA temperature in degree Celsius?

  1. 12

  2. 14

  3. 15

  4. 17


Correct Option: C

The mean sea level pressure according to ISA is taken to be approximately

  1. 1010 Hpa

  2. 1013 Hpa

  3. 1015 Hpa

  4. 1020 Hpa


Correct Option: B

What is the ISA lapse rate for temperature upto 11 km high?

  1. 1.54 Degrees Celsius/1000 feet

  2. 1.98 Degrees Celsius/1000 feet

  3. 2.36 Degrees Celsius/1000 feet

  4. 2.78 Degrees Celsius/1000 feet


Correct Option: B

The rate of fall of pressure horizontally is known as

  1. pressure rate

  2. pressure pattern

  3. pressure gradient

  4. pressure trend


Correct Option: C

Which of the following types of clouds are the characteristic of a thunderstorm?

  1. Cirrus

  2. Cirrostratus

  3. Cumulonimbus

  4. Altostratus


Correct Option: C

Air density doesn't depend on which of the following factors?

  1. Wind

  2. Temperature

  3. Altitude

  4. Pressure


Correct Option: A

In which of the following types of clouds, can you expect a smooth flight?

  1. Altocumulus

  2. Cumulonimbus

  3. Stratocumulus

  4. Altostratus


Correct Option: D

RVR observations are used only when runway visibility is below

  1. 1500 m

  2. 1750 m

  3. 2200 m

  4. 2400 m


Correct Option: A

During fog, the visibility usually drops down to below

  1. 5 Km

  2. 3 Km

  3. 2 Km

  4. 1 Km


Correct Option: D

Which type of icing occurs when the temperature of the air is below the frost point of ambient air?

  1. Rime ice

  2. Hoar frost

  3. Glaze ice

  4. None of these


Correct Option: B

A ________ lapse rate is required for the formation of a thunderstorm.

  1. steep

  2. shallow

  3. variable

  4. none of these


Correct Option: A

Which of the following is not a trigger action for a thunderstorm to form?

  1. Solar heating

  2. Orographic lifting

  3. Frontal lifting

  4. Duststorm


Correct Option: D

During the ________ stage, both updraughts and downdraughts can be witnessed in a cloud.

  1. mature

  2. dissipating

  3. formation

  4. none of these


Correct Option: A

What does RVR stands for?

  1. Runway Visibility Region

  2. Runway Visual Range

  3. Range of Visibility of Runway

  4. Runway Vortex Range


Correct Option: B

The type of icing, which occurs when super cooled water drops strike a part of air intake and induction system, is called

  1. throttle ice

  2. glaze ice

  3. impact ice

  4. rime ice


Correct Option: C

In which stage of a thunderstorm can only downdraughts be witnessed?

  1. Mature

  2. Dissipating

  3. Formation

  4. None of these


Correct Option: B

The fog formed as a result of transport of relatively warmer moist air over cold ground is called

  1. advection fog

  2. radiation fog

  3. steaming fog

  4. cold fog


Correct Option: A

The winds usually flow from

  1. high pressure areas to low pressure areas

  2. low pressure areas to high pressure areas

  3. hilly areas to plain areas

  4. windy areas to non windy areas


Correct Option: A

In what units are the winds aloft measured?

  1. knots/true direction

  2. kmph/magnetic direction

  3. knots/magnetic direction

  4. mph/true direction


Correct Option: A

The coriolis force ia zero at the

  1. North pole

  2. South pole

  3. Equator

  4. Prime meridian longitude


Correct Option: C

Squall is a sudden change in wind speed exceeding _______ knots, lasting for more than one minute.

  1. 14

  2. 24

  3. 34

  4. 44


Correct Option: B

As per the patterns of Indian climatology, in winters, Polar Front Jet Streams are usually in the speed range of

  1. 30-40 knots

  2. 40-80 knots

  3. 90-100 knots

  4. 120-140 knots


Correct Option: C

In what direction does the change in wind direction occur during Veering?

  1. Clockwise

  2. Anticlockwise

  3. Perpendicular

  4. None of these


Correct Option: A

Sea smoke/Sea fog is another name of

  1. Radiation fog

  2. Advection fog

  3. Steam fog

  4. Frontal fog


Correct Option: C

In which layer of the atmosphere does most of the weather changes occur?

  1. Troposphere

  2. Stratosphere

  3. Mesosphere

  4. Thermosphere


Correct Option: A
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