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Question Bank
Questions for IC ADDITIONAL QUESTIONS
Answer the following questions
Test Mode
Training Mode
1. In an arid area the cloud which is capable of causing Dust Storm is
CU
CB
CI
NS
2. How much in advance of departure a pilot must notify the Aeronautical Met Station (AMS) requiring Met Forecast for a national flight ?
3 hr
18 to 24 hr
12 hr
6 hr
3. The variable surface wind speed refers to
> 02 KT
<03 KT
Calm
04 KT or less
4. The Polar Front is
Continuous
Not continuous
Boundary between Arctic and Polar Air masses
A transition Zone between Polar and Arctic Westerlies
5. Due to Coriolis force an Ely wind blowing over the equator will
remain unchanged
get deflected to the left
Become Wly
weaken
6. Isohyets are the line of equal
Sunshine
Density
Humidity
Rainfall amount
7. Convective clouds develop at a place when the atmosphere is
none of the above
neutrally stable
absolutely stable
conditionally stable
8. During pre - monsoon the pressure gradient in the S parts of East coast of India is from
E to W across the coast
N to S along the coast
S to N along the coast
W to E across the coast
9. Fronts are characteristics of
Tropical cyclones
TS
Monsoon depression
Extra Tropical Depressions
10. Cold core low pressure system
weakness with height
veers with height
does not change with height
intensifies with height
11. The surface wind at coastal stations on west coast of India during late night/early morning in pre - monsoon season is
Sly
Ely
Nly
Wly
12. The hailstones occur from
cold clouds only
warm clouds only
both warm and cold clouds
NS clouds
13. Which of the following Indian month corresponds to Sharad Ritu ( Post monsoon)
Asauj and Kartika
Shravana
Jyeshtha
Phalguna
14. The upper air report from an a/c other than weather reconnaissance a/c has the identification code as
CODAR
WINTEM
VOLMET
RAWIN
15. The amount of water vapour which air can hold depends on
Dry bulb temperature
Virtual temperature
Dew point temperature
Wet bulb temperature
16. In a Cold Occlusion the
Cold air of Warm Front is the coldest
Cold air of Cold Front is the coldest
Cold air of Cold Front is not the coldest
Cold air of Warm Front is warmer than that of Cold Front
17. Which of the following Indian month corresponds to Grishm Ritu
Paush
Shravana
Phalguna
Jyeshtha and Asadha
18. A day is called Rainy Day when the amount of Rainfall in a day is
7.5 mm or more
2.5 mm or more
at least 1.0 mm
10 mm or more
19. The strong Wly winds which blow in both the hemispheres between 35° and 60° Lat are called
Trades
Polar Wly
Roaring Forties
Jetstreams
20. The dew point temperature
is always higher than wet bulb temperature for unsaturated air
is equal to the air temperature during mist
changes by cooling or warming
is higher if air contains more water vapour
21. Which of the following Indian month corresponds to Rainy season/Varsha Ritu
Kwar
Magha
Shravana Bhadrapad
Kartic
22. RVR is a measure of
Intensity of background illumination
Atmospheric transsmissivity and background illumination
Atmospheric transparency, intensity of R/W lights and background illumination
Atmospheric transsmissivity, intensity of R/W lights
23. In a METAR the third layer of clouds is reported when amount is
3/8 or more SCT, BKN or OVC
3/8 or more FEW, SCT
5/8 or less SCT, BKN
5/8 or more BKN or OVC
24. with altitude in an isothermal atmosphere the density of the air
increases with height
first decrease and then decrease
does not change
decreases
25. The Doppler Weather Radar works on the principles of
Change in frequency of return echo
Frequency amplification
Wavelength modification
Comparison of drop sizes
26. The lapse rate of temperature in a low level inversion is
negative
insignificant
Positive
6.5°C
27. Veering of geostrophic wind at a station with height indicates
Convection of warm air
Warm air advection
Subsidence of cold air
Cold air advection
28. The characteristics features, good visibility and turbulence, are of
cold polar air mass
High pressure area
stable air mass
unstable air
29. Fog is produced in Fronts by
adiabatic cooling
frequent Rain
evaporation and precipitation
freezing Rain
30. Isopicnic are the line of constant
Insolation
Height
Density
Geopotential heights
31. A cold front is defined as the
warm airmass over riding the cold airmass
retreating cold pool of air
leading cold gust front
advancing cold airmass undercutting the warm airmass
32. Above which datum the cloud base is reported at airports?
above pressure level in ISA
above the aerodrome level
above mean sea level
above standard pressure level
33. Highest annual rainfall over the earth occurs the regions?
Polar regions
Temperate regions
Tropical regions
equatorial regions
34. SIGMET message contains weather information which is
Actual only
Actual and not a forecast
Both actual and forecast
Forecast only
35. An a/c at FL180 in July from Kolkata to Mumbai will generally experience
Wly wind
Nly wind
Ely wind
Sly wind
36. Extreme turbulence in a TS can be assessed from
heavy Ice accretion
appearance of Anvil
frequent lightning
Hail
37. An a/c cruising at FL500 in July from Chennai to Trivandrum will generally experience
Tropical Ely wind
Subtropical Wly wind
Weak Sly wind
Tropical Jet stream
38. 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
1200 m
0300 m
4050 m
39. In a SPECI the lowest layer of clouds, regardless of amount, is reported as
FEW, SCT, BKN or OVC
BKN or OVC
FEW, SCT or OVC
SCT, BKN or OVC
40. 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 UTC
0700 and 0800 IST
0400 and 0600 IST
0700 and 0800 UTC
41. Stability of atmosphere is determined by
DALR
SALR
Inversion
ELR
42. The atmospheric pressure at an aerodrome is equal to the MSL pressure then
None of the above
QNH<QFE
QNH>QFE
QNH=QFE
43. SIGMET message is
Special Reports to local ATC unit and concerned operators
Occurring or expected, enroute weather, which may affect safety of the air operation
Trend type of landing forecast passed to operators
Aerodrome forecast in plain language
44. Jet streams are strongest when temperature gradient are greatest
False
True
45. Over the earth deserts are located in the regions of
Polar Front
Subtropical high
Equatorial trough
ITCZ
46. Thermal lows are generally located over
Temperate region
Equatorial region
Movement region
Polar region
47. The main cause of ground inversion is
Terrestrial radiation on calm and clear night
Convection
Release of latent heat
Incident solar radiation
48. Which of the following Indian month corresponds to Winter/Shishira Ritu
Pausha
Magha and Phalguna
Shravana
Kwar
49. While planning to land during TS, which is the most expected serious aviation hazard
Hail storm
Heavy rain
Downdraught
WS and Turbulence
50. The main cause of occurrence of weather over the earth surface is
Movement of air mass
Changing pressure
Variation in insolation
Advection of moist air
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