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Question Bank
Questions for IC ADDITIONAL QUESTIONS
Answer the following questions
Test Mode
Training Mode
1. Isopicnic are the line of constant
Density
Height
Geopotential heights
Insolation
2. The most hazardous area for aviation in a cyclone is
wall cloud around the eye
all over the cyclone
about 400 km from eye
eye of the cyclone
3. Extreme turbulence in a TS can be assessed from
frequent lightning
Hail
heavy Ice accretion
appearance of Anvil
4. How much in advance of departure a pilot must notify the Aeronautical Met Station (AMS) requiring Met Forecast for a national flight ?
12 hr
3 hr
18 to 24 hr
6 hr
5. The main cause of occurrence of weather over the earth surface is
Variation in insolation
Advection of moist air
Changing pressure
Movement of air mass
6. Which of the following Indian month corresponds to Winter/Shishira Ritu
Magha and Phalguna
Kwar
Pausha
Shravana
7. Fog is produced in Fronts by
evaporation and precipitation
freezing Rain
frequent Rain
adiabatic cooling
8. Thermal lows are generally located over
Temperate region
Polar region
Equatorial region
Movement region
9. Which of the following Indian month corresponds to Rainy season/Varsha Ritu
Magha
Kartic
Kwar
Shravana Bhadrapad
10. with altitude in an isothermal atmosphere the density of the air
does not change
first decrease and then decrease
decreases
increases with height
11. In a SPECI the lowest layer of clouds, regardless of amount, is reported as
BKN or OVC
FEW, SCT or OVC
SCT, BKN or OVC
FEW, SCT, BKN or OVC
12. Isohyets are the line of equal
Humidity
Rainfall amount
Density
Sunshine
13. An a/c cruising at FL500 in July from Chennai to Trivandrum will generally experience
Weak Sly wind
Subtropical Wly wind
Tropical Jet stream
Tropical Ely wind
14. TAF VECC 2203000 2400KT 3000FU SCT030 BECMG 0406 6000 SCT030 BKN100 TEMPO 0708 2000 TSRA SCT20CB OVC080= The above TAF forecasts TS and RA between
0400 and 0600 IST
0700 and 0800 UTC
0700 and 0800 IST
0400 and 0600 UTC
15. The Fronts associated with WDs over NW India in winters are mostly
Cold Occlusion
Warm Occlusion
Cold Fronts
Warm Fronts
16. Stability of atmosphere is determined by
SALR
DALR
Inversion
ELR
17. The characteristics features, good visibility and turbulence, are of
unstable air
High pressure area
stable air mass
cold polar air mass
18. The atmospheric pressure at an aerodrome is equal to the MSL pressure then
QNH=QFE
QNH>QFE
None of the above
QNH<QFE
19. During SW monsoon the wind at FL400 over Bangaluru is generally
Fluctuates between Ely and Wly
Strong Wly
Strong Ely
Weak Sly
20. If after the issue of a SPECI, conditions continue to be below the prescribed limit then the next routine report will be a
SPECIAL
could be METAR or SPECI
SPECI
METAR
21. Will a SPECI be issued when the mean speed has changed by
< 09 kt
> 08 kt
10 kt or more
less than 10 kt
22. Wind at 1 km height is 320/20 kt whereas surface wind is 260/05 kt because of
Convection
Subsidence
Friction
Thunderstorm
23. The wind Bora is a
warm Anabatic wind
light maritime Ely wind
violent Wly wind
cold Katabatic wind
24. Above which datum the cloud base is reported at airports?
above the aerodrome level
above standard pressure level
above mean sea level
above pressure level in ISA
25. The Polar Front is
A transition Zone between Polar and Arctic Westerlies
Boundary between Arctic and Polar Air masses
Continuous
Not continuous
26. In a METAR the third layer of clouds is reported when amount is
5/8 or more BKN or OVC
3/8 or more FEW, SCT
3/8 or more SCT, BKN or OVC
5/8 or less SCT, BKN
27. What controls the movement of most TS ?
wind at 700 - 500 hPa
wind at 30,000 ft
wind at 400 hPa
jet stream
28. A cold front is defined as the
warm airmass over riding the cold airmass
advancing cold airmass undercutting the warm airmass
retreating cold pool of air
leading cold gust front
29. In an arid area the cloud which is capable of causing Dust Storm is
CI
NS
CB
CU
30. Flight forecast in "Chart from of Documentation" supplied in India consists of
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
SIGWX chart and prognostic charts for 300, 250 and 200 hPa
31. The dew point temperature
changes by cooling or warming
is equal to the air temperature during mist
is always higher than wet bulb temperature for unsaturated air
is higher if air contains more water vapour
32. For International Flight documentation, the following data is provided
SIGWX charts and upper wind and temperature charts
WAFC generated SIGWX forecast chart only
SIGWX charts between FL 250 and FL 600
SIGWX charts between FL 250 and FL 630 and forecast 250 hPa wind and Temp data
33. The ITCZ
affects only N hemisphere in winters
affects S hemisphere in monsoon
usually lies along the Equatorial Trough
is a region of calm winds and layer type of clouds
34. Most of the weather occurring in India is due to
Monsoon Trough
Fronts
TS
Cyclones
35. SPECI is issued when the visibility changes from
8 km to 6 km
800 to 1500 m
300 m to 150 m
300 m to 400 m
36. While planning to land during TS, which is the most expected serious aviation hazard
Hail storm
Downdraught
WS and Turbulence
Heavy rain
37. Jet streams are strongest when temperature gradient are greatest
False
True
38. The hailstones occur from
warm clouds only
both warm and cold clouds
NS clouds
cold clouds only
39. Over the earth deserts are located in the regions of
Subtropical high
Equatorial trough
ITCZ
Polar Front
40. In a Cold Occlusion the
Cold air of Cold Front is the coldest
Cold air of Warm Front is warmer than that of Cold Front
Cold air of Warm Front is the coldest
Cold air of Cold Front is not the coldest
41. Convective clouds develop at a place when the atmosphere is
absolutely stable
neutrally stable
conditionally stable
none of the above
42. Veering of geostrophic wind at a station with height indicates
Subsidence of cold air
Cold air advection
Warm air advection
Convection of warm air
43. 'TAF AMD' covers validity period
half the validity period of the TAF
full validity period of the TAF
the validity starting 2 hr prior to the end period of original TAF
The remaining validity period of original TAF
44. Cold core low pressure system
veers with height
weakness with height
does not change with height
intensifies with height
45. The air can hold more moisture at MSL over the
Equator
Temperate latitudes
20° Latitude
Poles
46. 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
3 hr
12 hr
18 to 24 hr
6 hr
47. The Doppler Weather Radar works on the principles of
Comparison of drop sizes
Wavelength modification
Change in frequency of return echo
Frequency amplification
48. SIGMET message is
Occurring or expected, enroute weather, which may affect safety of the air operation
Special Reports to local ATC unit and concerned operators
Aerodrome forecast in plain language
Trend type of landing forecast passed to operators
49. SPECI is issued for RVR when it changes or passes
200m
400m
900m
150m
50. The variable surface wind speed refers to
04 KT or less
<03 KT
> 02 KT
Calm
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