Q.
1 A wind in a terminal area forecast expressed as VRB30G45 would:
Always be associated with closely spaced isobars around a trough
Be improbable, since variable wind directions are only associated
with light winds and high pressure systems
Probably be associated with a thunderstorm
Always be associated with closely spaced isobars around a ridge
Q.2 The validity of a METAR is:
3 hours
6 hours
30 hours
Not applicable
Q.3 The middle atmosphere layer characterised by temperature inversion and
stability...
Troposphere
Tropopause
Stratosphere
Q.4 Mother of pearl clouds occur in………….
Mesosphere
Thermosphere
Stratosphere
Q.5 By weight, approximate ratio of O2 to N2 in the atmosphere is
1:3
1:4
1:5
Q.6 Two aircraft flying at the same indicated altitude with their altimeter set to
1013.2 hPa. One is flying over cold air mass and other over warm air mass.
Which of the two has greater altitude?
Ac flying over warm air mass
Ac flying over cold air mass
Q.7 Height of tropopause
Is constant
Varies with altitude
Varies with Latitude
Q.8 Above 8 km the lower temperatures are over
Equator
Mid Latitudes
Poles
Q.9 Atmosphere is heated by
Solar Radiation
Heat from earth surface
Q.10 Tropos means
Turning
Under current
Convection
Q.11 CO2 and H2O are also called ...
Green House Gases
Rare Earth Gases
Q.12 Troposphere is generally
Stable
Unstable
Q.13 Tropopause is discontinuous at about
30°lat
40°Iat
60°lat
Q.14 The middle atmosphere layer characterised by temperature inversion and
stability...
Troposphere
Tropopause
Stratosphere
Q.15 Mother of pearl clouds occur in………….
Mesosphere
Thermosphere
Stratosphere
Q.16 The temperature in ISA at 17 km is ..
-56.5°C
-65.5° C
-35.5° C
Q,17 By weight, approximate ratio of O2 to N2 in the atmosphere is
1:3
1:4
1:5
Q.18 By volume, the approximate ratio of O2 to N2 in the atmosphere is
1:3
1:4
1:5
Q.19 In ISA, the mean sea level temperature is
15° C
10° C
25°C
Q.20 CO2 and H2O keep the atmosphere
Warm
Cold
Have no effect
Q.21 Noctilucent clouds occur in
Thermosphere
Mesosphere
Stratosphere
Q.22 Low pressure is associated with
Good Weather
Bad Weather
None
Q.23 In a high pressure area winds are
Normal
Strong
Weak
Q.24 Flying from Low to High an altimeter would read
Over
Under
constant
Q.25 Isallobars are lines of equal
Pressure
Temperature Tendency
Pressure Tendency
Q.26 What kind of a barometer is an altimeter?
Aneroid
Mercury
Alcohol
Q27. A region between two Lows and Two Highs is
Depression
Secondary Low
Col
Q28. Bad weather and better visibility is associate with
High
Low
Col
Q29. Two aircraft flying at the same indicated altitude with their altimeter set to
1013.2 hPa. One is flying over cold air mass and other over warm air mass.
Which of the two has greater altitude?
Ac flying over warm air mass
Ac flying over cold air mass
Q30. The rate of fall of pressure with height in a warm air mass compared to
cold air mass will be
Same
More
Less
Q31 Lines drawn through places of equal pressure are known as
Isobars
Isotherms
Isogonal
Isoclinal
Q32. Diurnal pressure changes are most pronounced in
Polar region
Middle latitudes
Tropics
Q33. In the Southern Hemisphere, around a Low Pressure Area wind blows
In clockwise direction
In anticlockwise direction
Across isobars towards the centre
Q34. If altimeter reads aerodrome elevation when a/c is on ground, its sub-scale
must have been set
QNH
QNE
QFF
QFE
Q.35 Diurnal variation of temperature is greatest when wind is
calm
light
strong
Q.36 On a clear day the amount of radiation received by earth surface is
3/4 th
30%
5/6 th
Q.37 ALBEDO is
Radiation received by earth
Amount of heat
Reflecting power of earth
Q.38 During Day the ambient temperature is ... than ground
Lower
Higher
Same
Q.39 At a coast diurnal variation of temp, depends on ..
Wind direction
Wind speed
Radiation
Q.40 An air parcel is lifted till it gets saturated. The temperature attained at this
stage is called
Potential temperature
Dew Point
Wet bulb
Q.41 The solar radiation consists of about 46 %
UV
IR
Visible
Q.42 The total amount of energy radiated by a black body is proportional to
T2
T3
T4
Q.43 The wavelength of most intense radiation is inversely proportional to the....
Absolute temperature
Humidity
Albedo
Q.44 Hot bodies (like sun) radiate
Short Waves
Long Waves
Both
Q.45 The flow of heat from earth surface is 77% by
Sensible Heat
Latent Heat
Q.46 -40° C - -40° F
True
False
Q.47 Surface Temp, is recorded at a height of above ground
1.5 m
1.25m
2m
Q.48 The door of Stevenson's screen should open
opposite to sun
into sun
any direction
Q.49 The liquid used in Minimum Thermometer is
mercury
alcohol
sprit
Q.50 Density is at poles than equator
Higher
Lower
Same
Q.51 Above 8 km density is at poles than at equator
Higher
Lower
Same
Q.52 The altitude in ISA at which air density is the same as the observed density
is called
Density Altitude
ISA Density
Real Density
Q.53 Density is usually expressed as
Kg/sq m
g/cu m
N/sq m
Q.54 Higher density altitude means density
Higher
Lower
Same
Q.55 For given pressure and temperature moist air has density
Higher
Lower
Same
Q.56 Density altitude may be defined as:
The altitude in a standard atmosphere at which the prevailing pressure
occurs.
The altitude in a standard atmosphere at which the prevailing density
occurs.
Surface of constant atmospheric pressure related to standard
atmosphere of 1013.2 hPa
Q.57 The ratio in % between the amount of water vapour present in the air to
the amount of water vapour that it can hold at the same temperature is
Humidity
Relative humidity
Dew point
Q.58 The temperature to which air be cooled at constant pressure to become
saturated, is called
Wet bulb temperature
Dry bulb temperature
Dew point
Humidity
Q.59 Free air temperature, Wet bulb temperature and Dew point temperature
are equal when
Air temperature is 0°C
Relative humidity is 100%
Air temperature is not below 0°C
Q.60 On a rainy day compared to sunny day the length of runway required is
More
Less
Same
Q.61 Instrument used for measuring visibility...
Visiometer
Transmissometer
Ceilometer
Q.62 Fronts are associated with
Tropical cyclone
Monsoon Depression
Extra-tropical Cyclones
Q.63 FZRA and FZFG occur of a warm front
Ahead
During
After
Q64.The STJ affects India from
Jun to Jul
Oct to May
Aug to Sep
Q65. STJ has a layered structure. There are often two layers of maximum wind
to the...of jet core
SW
Q66.Vertical wind shear in STJ is greater the core
above
below
along
Q67.The TJ prevails over the Indian Peninsula from
May to Jun
Sep to Oct
Jun to Aug
Q68.The TJ is located over the Indian Peninsula, approximately at
13° N
17° N
18° N
Q.70 For mountain waves to form there should be flow of air across the ridge,
generally within ……………of the perpendicular to the ridge.
30°
45°
60°
Q.71 For mountain waves to form the wind speed for small mountains should be
atleast
15 m/s
10 m/s
7m/s
Q.72 Most CAT occurs on the of a jet stream and in the vicinity of upper level
frontal zones where temperature contrasts are strong.
Fringes
Within the core
Axis
Q.73 Wind speed in a tropicaJ severe cyclone is:
27 -33 kt
48 - 63 kt
17-27 kt
Q.74 Fronts are characteristic of:
Tropical cyclone
Extra-tropical depressions
Monsoon depressions
Q.75 Hot weather period is
Jan-Feb
Mar-May
Jun-Sept
Oct - Dec
Q.76 During hot weather
WDs cause TS / DS over Punjab & Rajasthan
No WD affect N-parts of country
Track of WD is southern most
Q.77 The monsoon current over the West coast of India is
SWly
SEly
NEly
Q.78 Monsoon period is
Jan to Feb
March to May
June to Sep
Oct to Dec
Q.79 The monsoon advances with
Bay of Bengal current only
Arabian Sea current only
Bay of Bengal and Arabian sea currents
Q.80 Rainfall occurs all over the country during monsoon when
Axis of MT is in its normal position along Gangetic plains
Axis of MT is along Himalayas
Depression has formed o-er Bay of Bengal
Q.81 Break in monsoon occurs when
Axis of monsoon trough is along Gangetic plains
Axis of monsoon trough is along foot hills of Himalayas
Depression over Bay of Bengal
Q.82 With a depression over the head Bay fair weather during monsoon occurs
over
Assam
W Bengal
Orissa
Q.83 Post monsoon weather period re
Mar to May
Jun to Sept
Oct to Nov
Jan to Feb
Q.84 During monsoon period, low pressure lies over
Bay of Bengal
NE India
Central India
Pakistan
Q.85 An aircraft flying in Monsoon season from Chennai to Kolkata at 14 km will
experience winds
Easterly
Westerly
Nly
Southerly
Q.86 An aircraft flying in Winter season from Chennai to Kolkata at 12 km will
experience winds
Ely
Wly
Nly
Sly
Q.87 An aircraft flying in Pre monsoon season from Delhi to Kolkata at 10 km
will experience winds
Easterly
Westerly
Northerly
Southerly
Q.88 An aircraft flying in Monsoon season from Mumbai to Ahmedabad at 03 km
will experience winds
SEly
SWIy
Nly
NWly
Q.89 An aircraft flying in winter season from Delhi to Kolkata at 06 km will
experience winds
SEly
SWIy
Nly
NW - Wly
Q.90 An aircraft flying in winter season from Delhi to Kolkata at 06 km will
experience
Port drift
Starboard drift
Tail wind
Head win
Q.91 An aircraft flying in winter season from Kolkata to Nagpur at 02 km will
experience
Port drift
Starboard drift
Tail wind
Head wind
Q.92 The huge vertical circulations, one between the equator and 3 ON and
another between equator and 30S, are called
Hadley Cells
Ferrel Cells
Polar cells
Q.93 SIGMET is issued for aircraft
in flight
on ground
both
Q.94 VOLMET consists of
SIGMET
TAP only
TAF and METAR
METAR VIDP 160230 30005KT 290V050 1500S 6000N R15/P1500U BR FEW020
FEW025CB SCT120 BKN300 32/27 Q1003 REFG TEMPO FM0330 22015G25KT
3000 +TSRAFEW010SCT025CBBKN150BE CM GAT0415 27008KTCAVOK=
Q.95 The METAR has been issued at
0630 1ST
0230UTC
0230 1ST
Q.96 Height of base of low clouds is
2000 m
2500 ft
2500 ft
Q.97 Runway Visual range is
1500 m
>1500 m
< 1500 m
Q.98 Runway Visual range has
Decreased
Increased
Remained same
Q.99 Present weather is
Fog
Brown Dust
Mist
Q100. CAVOK is issued when visibility is
9-10 km
10 km or more
10 km only
