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Question Bank
Questions for IC ADDITIONAL QUESTIONS
Answer the following questions
Test Mode
Training Mode
1. SIGMET message is
Trend type of landing forecast passed to operators
Occurring or expected, enroute weather, which may affect safety of the air operation
Aerodrome forecast in plain language
Special Reports to local ATC unit and concerned operators
2. Which of the following Indian month corresponds to Rainy season/Varsha Ritu
Kartic
Magha
Kwar
Shravana Bhadrapad
3. Wind at 1 km height is 320/20 kt whereas surface wind is 260/05 kt because of
Subsidence
Friction
Thunderstorm
Convection
4. Convective clouds develop at a place when the atmosphere is
none of the above
neutrally stable
absolutely stable
conditionally stable
5. The dew point temperature
is always higher than wet bulb temperature for unsaturated air
is equal to the air temperature during mist
is higher if air contains more water vapour
changes by cooling or warming
6. The ITCZ
affects S hemisphere in monsoon
affects only N hemisphere in winters
is a region of calm winds and layer type of clouds
usually lies along the Equatorial Trough
7. The upper air report from an a/c other than weather reconnaissance a/c has the identification code as
VOLMET
CODAR
WINTEM
RAWIN
8. RVR is a measure of
Atmospheric transsmissivity and background illumination
Intensity of background illumination
Atmospheric transsmissivity, intensity of R/W lights
Atmospheric transparency, intensity of R/W lights and background illumination
9. An a/c cruising at FL500 in July from Chennai to Trivandrum will generally experience
Tropical Jet stream
Subtropical Wly wind
Weak Sly wind
Tropical Ely wind
10. Which of the following Indian month corresponds to Grishm Ritu
Phalguna
Jyeshtha and Asadha
Shravana
Paush
11. Extreme turbulence in a TS can be assessed from
frequent lightning
appearance of Anvil
heavy Ice accretion
Hail
12. SPECI is issued for RVR when it changes or passes
400m
900m
150m
200m
13. SIGMET message contains weather information which is
Actual only
Actual and not a forecast
Forecast only
Both actual and forecast
14. The surface wind at coastal stations on west coast of India during late night/early morning in pre - monsoon season is
Wly
Nly
Ely
Sly
15. Fog is produced in Fronts by
adiabatic cooling
frequent Rain
freezing Rain
evaporation and precipitation
16. The amount of water vapour which air can hold depends on
Virtual temperature
Dew point temperature
Wet bulb temperature
Dry bulb temperature
17. The strong Wly winds which blow in both the hemispheres between 35° and 60° Lat are called
Roaring Forties
Polar Wly
Trades
Jetstreams
18. The Doppler Weather Radar works on the principles of
Change in frequency of return echo
Comparison of drop sizes
Wavelength modification
Frequency amplification
19. The air can hold more moisture at MSL over the
Poles
Equator
20° Latitude
Temperate latitudes
20. SPECI is issued when the height of base of the lowest cloud layer > 5/8 changes to or passes
450m, 300m, 150m, 60m, 30m
500m, 300m, 150m, 50m, 25m
400m, 300m, 150m, 90m, 30m
450m, 350m, 150m, 50m, 30m
21. Isohyets are the line of equal
Rainfall amount
Sunshine
Density
Humidity
22. The most hazardous area for aviation in a cyclone is
eye of the cyclone
all over the cyclone
about 400 km from eye
wall cloud around the eye
23. Veering of geostrophic wind at a station with height indicates
Convection of warm air
Warm air advection
Cold air advection
Subsidence of cold air
24. Thermal lows are generally located over
Polar region
Equatorial region
Temperate region
Movement region
25. Which of the following Indian month corresponds to Sharad Ritu ( Post monsoon)
Jyeshtha
Phalguna
Shravana
Asauj and Kartika
26. The Code Name for an aviation forecast in figure code for a specific area is
TAFOR
GAMET
ROFOR
ARFOR
27. The variable surface wind speed refers to
04 KT or less
> 02 KT
<03 KT
Calm
28. An a/c at FL180 in July from Kolkata to Mumbai will generally experience
Wly wind
Nly wind
Ely wind
Sly wind
29. In a METAR the third layer of clouds is reported when amount is
5/8 or more BKN or OVC
5/8 or less SCT, BKN
3/8 or more FEW, SCT
3/8 or more SCT, BKN or OVC
30. The main cause of occurrence of weather over the earth surface is
Movement of air mass
Advection of moist air
Changing pressure
Variation in insolation
31. In general circulation over the globe the equatorial low pressure belt is at the junction of which cells ?
Hadley cells
Ferrel and Hadley cells
Ferrel cells
Polar cells
32. The hailstones occur from
both warm and cold clouds
warm clouds only
NS clouds
cold clouds only
33. Flight forecast in "Chart from of Documentation" supplied in India consists of
SIGWX chart and prognostic charts for 300, 250 and 200 hPa
Latest surface synoptic chart and upper air charts
Synoptic charts 03 and 12 UTC and U/A charts for 00 and 12 UTC
SIGWX chart and upper air charts for 850, 500 and 300 hPa
34. Due to Coriolis force an Ely wind blowing over the equator will
Become Wly
get deflected to the left
weaken
remain unchanged
35. 'TAF AMD' covers validity period
the validity starting 2 hr prior to the end period of original TAF
half the validity period of the TAF
The remaining validity period of original TAF
full validity period of the TAF
36. Above which datum the cloud base is reported at airports?
above standard pressure level
above pressure level in ISA
above the aerodrome level
above mean sea level
37. What controls the movement of most TS ?
wind at 400 hPa
wind at 700 - 500 hPa
jet stream
wind at 30,000 ft
38. When visibility is 800 m to 5000 m, in a METAR it is reported in steps of
500 m
100 m
1000 m
200 m
39. The wind Bora is a
cold Katabatic wind
warm Anabatic wind
light maritime Ely wind
violent Wly wind
40. with altitude in an isothermal atmosphere the density of the air
does not change
first decrease and then decrease
increases with height
decreases
41. Over the earth deserts are located in the regions of
Subtropical high
ITCZ
Polar Front
Equatorial trough
42. The sun is highest at noon, but two/three hours later the earth receives more radiation. Hence maximum temperature is around 1500 hr. It is due to
Angular momentum
Thermal Inertia
Thermal cooling
Rotation of the Earth
43. Which of the following Indian month corresponds to Winter/Shishira Ritu
Kwar
Pausha
Magha and Phalguna
Shravana
44. Most of the weather occurring in India is due to
Cyclones
Monsoon Trough
TS
Fronts
45. Fronts are characteristics of
Extra Tropical Depressions
Monsoon depression
TS
Tropical cyclones
46. In a SPECI report the QNH 1005.8 hPa is reported as
1016 hPa
1016.8 hPa
1015.8 hPa
1005 hPa
47. Will a SPECI be issued when the mean speed has changed by
less than 10 kt
< 09 kt
10 kt or more
> 08 kt
48. METAR VIAG 250300Z 27005KT 1200 + SHRA FEW008 SCT025 BKN080 28/25 Q1004 TEMPO 0405 0800 + TSRA FEW020 CB OVC300 = In the METAR surface visibility in TS is
800 m
4050 m
0300 m
1200 m
49. The characteristics features, good visibility and turbulence, are of
unstable air
High pressure area
cold polar air mass
stable air mass
50. The minimum notice required to be given to an aerodrome Met office (AMO) by an aircraft operator needing Met data for an National flight is
12 hr
6 hr
18 to 24 hr
3 hr
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