MET REGULAR SEP 2023 – Air – DGCA Question Bank For Politics

#1. Lines of constant wind speed drawn on weather charts are called

Isobars

Isotachs

Isogons

#2. Trade winds are most prominent or strongest

Upper troposphere over sea

Lower troposphere over ocean

Lower troposphere over land

Upper troposphere over land

#3. What causes wind?

Difference in pressure

Rotation of the earth

Frontal systems

Difference in temperature

#4. In which of these cloud types can icing be virtually ruled out?

NS

CU

CI

SC

#5. At the top of orographic waves, in mountainous regions, the cloud most likely to be encountered is

cirrus

cumulus mediocris

altocumulus lenticularis.

cirrostratus.

#6. Fog occurs in Cold Front

Ahead

During

After

#7. Flying from Low to High an altimeter would read

Over

Under

constant

#8. The movement of wind in relation to a cyclone is

Descending and subsiding

Ascending and converging

Descending and cooling

Ascending and diverging

#9. An aerodrome is at the mean sea level. Its QNH is 1014.0 hPa. Its QFF will be

1014.0 hPa

1013.25

Difficult to tell

More than QNH

#10. The total energy radiated by a black body is proportional to its temperature(T)

T²

T³

T4

#11. Hot bodies (like sun) radiate

Short Waves

Long Waves

Both

#12. Generally the severest activity of a, heat type, TS is for

2 hrs

30 to 45 min

3 to 4 hr

#13. Norwesters normally occur during

Mornings

Afternoons

Nights

#14. Norwesters occur during

Jan-Feb

Mar-May

June-Sep

Oct-Dec

#15. Rime is formed by freezing of ____ supercooled water droplets on airframe when air is flying through clouds

Small

Large

Medium

#16. Flying at right angles to a jet stream with falling pressure you will experience

Wind from left

Increasing head wind

Increasing tail wind

#17. Rainfall in the tropics is more in the

Morning

Afternoon

Night

#18. Inversion in the atmosphere indicates

Stability

Instability

Neutral

#19. Rise in temperature with height is

Inversion

Lapse

Normal

#20. For mountain waves to form the wind speed for small mountains should be atleast

15 m/s

10 m/s

7 m/s

#21. Wind speed in a tropical severe cyclone is:

27 - 33 kt

48 - 63 kt

17 - 27 kt

#22. Average life of a tropical cyclone in India is

10 Days

6-8 Days

3-4 Days

#23. CS in Indian region are less intense because

They have a very short travel over the sea

Sea surface temp. are not high

India is close to Equator

#24. An aircraft flying in Summer season from Delhi to Kolkata at 10 km will experience

Easterly

Westerly

Northerly

Southerly

#25. A part of the sinking air over the subtropical high flows towards the equator, turning west (in the northern hemisphere) due to the Coriolis force. This surface air is called

Trade winds

Roaring forties

Doldrums

#26. The validity of Landing Forecast (TREND) is

2 hr

1 hr

3 hr

#27. Relative humidity depends on

moisture content and pressure of the air

moisture content of the air only

temperature of the air only

moisture content and temperature of the air

#28. Which of the following conditions is most likely to lead to the formation of advection fog ?

Moist cold air moving over a warm surface

Moist warm air moving over a cold surface

Dry warm air moving over a cold surface

Dry cold air moving over a warm surface

#29. Low level wind shear is likely to be greatest

at the condensation level when there is no night radiation

at the condensation level when there is strong surface friction.

at the top of a marked surface-based inversion.

at the top of the friction layer.

#30. Where is a squall line to be expected?

In front of an active cold front.

Behind a cold front.

In front of a cold front occlusion at higher levels.

At the surface position of a warm front.

#31. Which constant pressure altitude chart is standard for a 18289 FT pressure level (FL 180) ?

300 hPa

500 hPa

200 hPa

700 hPa

#32. Advection fog occurs due to ........ air moving over ............ surface over .............

Dry, wet, land only

Moist and cold, warm, land only

Warm & moist air, cold, both land & sea

#33. The hailstones occur from

both warm and cold clouds

cold clouds only

warm clouds only

NS clouds

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