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ADDITIONAL QUESTION

Total questions: 75

Worksheet time: 38mins

Name
Class
Date
1.

The main cause of occurrence of weather over the earth surface is

a)

Changing pressure

b)

Advection of moist air

c)

Variation in insolation

d)

Movement of air mass

2.

Thermal lows are generally located over

a)

Polar region

b)

Equatorial region

c)

Temperate region

d)

Movement region

3.

The main cause of ground inversion is

a)

Release of latent heat

b)

Incident Solar radiation

c)

Convection

d)

Terrestrial radiation on calm and clear night

4.

Above the friction layer winds mostly blow parallel to isobars due to balance of

a)

Coriolis force and Geostrophic force

b)

Coriolis force and Pressure gradient force

c)

Coriolis force and Centripetal force

d)

Coriolis fond and Centripetal force

5.

Wind at 1 km height is 330/20 kt whereas surface wind is 260/05 kt because of

a)

Subsidence

b)

Convection

c)

Friction

d)

Thunderstorm

6.

The amount of water vapour which air can hold depends on

a)

Dew point temperature

b)

Wet bulb temperature

c)

Dry bulb temperature

d)

Virtual temperature

7.

In General circulation over the globe the Equatorial Low Pressure Belt is at the junction of which cells?

a)

Hadley Cells

b)

Polar cell

c)

Ferrell and Hadley Cells

d)

Ferrell Cell

8.

The dew point temperature

a)

is higher if air contains more water vapour

b)

changes by cooling or warming

c)

is equal to the air temperature during mist

d)

is always higher than Wet Bulb temperature for unsaturated air

9.

What controls the movement of most TS?

a)

jet stream

b)

wind at 400 hPa

c)

wind at 700-500 hPa

d)

wind at 30,000 ft

10.

Isohyets are the line of equal

a)

Humidity

b)

Sunshine

c)

Rainfall amount

d)

Density

11.

How much in advance of departure a pilot must notify the Aeronautical Met Station (AMS) requiring Met Forecast for a National flight?

a)

3 hr

b)

6 hr

c)

12 hr

d)

18 to 24 hr

12.

An a/c cruising at FL500 in July from Chennai to Trivandrum will generally experience

a)

Weak S'ly wind

b)

Subtropical W'ly wind

c)

Tropical E'ly wind

d)

Tropical air stream

13.

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

a)

Angular Momentum

b)

Thermal cooling

c)

Thermal Inertia

d)

Rotation of the Earth

14.

Which of the following Indian month corresponds to Grishma Ritu

a)

Jyeshtha and Aasadha

b)

Shravana

c)

Phalguna

d)

Paush

15.

Due to Coriolis force an E'ly wind blowing over the equator will

a)

get deflected to the left

b)

become W'ly

c)

weaken

d)

remain unchanged

16.

The surface wind at coastal stations on West coast of India during late night/early morning in Pre-monsoon season is

a)

E'ly

b)

W'ly

c)

S'ly

d)

N'ly

17.

Convective clouds develop at a place when the atmosphere is

a)

absolutely stable

b)

conditionally stable

c)

neutrally stable

d)

none of the above

18.

In a SPECI report the QNH 1005.8 hPa is reported as

a)

1016 hPa

b)

1015.8 hPa

c)

1005 hPa

d)

1016.8 hPa

19.

Stability of atmosphere is determined by

a)

Inversion

b)

DALR

c)

ELR

d)

SALR

20.

The characteristics features, good visibility and turbulence, are of

a)

high pressure area

b)

stable air mass

c)

unstable air

d)

cold Polar air mass

21.

Extreme turbulence in a TS can be assessed from

a)

heavy ice accretion

b)

frequent lightning

c)

Hail

d)

appearance of Anvil

22.

Jet streams are strongest when temperature gradient are greatest

a)

True

b)

False

23.

While planning to land during TS, which is the most expected serious aviation hazard

a)

Hail storm

b)

Downdraught

c)

WS and Turbulence

d)

Heavy rain

24.

An and area the cloud which is capable of causing Dust Storm is

a)

CI

b)

CU

c)

CB

d)

NS

25.

If after the issue of a SPECI, conditions continue to be below the prescribed limit then the next routine report will be a

a)

METAR

b)

SPECIAL

c)

SPECI

d)

could be METAR or SPECI

26.

Fronts are characteristics of

a)

Tropical cyclones

b)

Monsoon depression

c)

TS

d)

Extra Tropical Depressions

27.

In India in a VOLMET broadcast

a)

SIGMET is included

b)

METAR, SPECI, SIGMET and TAF are included

c)

only SPECI is included

d)

only TAF are included

28.

In a SPECI the lowest layer of clouds, regardless of amount, is reported as

a)

FEW, SCT, BKN or OVC

b)

SCT, BKN or OVC

c)

BKN or OVC

d)

FEW, SCT, or OVC

29.

The atmospheric pressure at an aerodrome is equal to the MSL pressure then

a)

QNH > QFE

b)

QNH = QFE

c)

QNH < QFE

d)

None of the above

30.

An a/c at FL180 in July from Kolkata to Mumbai will generally experience

a)

W'ly wind

b)

E'ly wind

c)

N'ly wind

d)

S'ly wind

31.

Isoqionic are the line of constant

a)

Height

b)

Insolation

c)

Geopotential heights

d)

Density

32.

The minimum notice required to be given to an Aerodrome Met Office (AMO) by an aircraft operator needing Met data for a National flight is

a)

3 hr

b)

6 hr

c)

12 hr

d)

18 to 24 hr

33.

In the METAR surface visibility in TS is

a)

800 m

b)

1200 m

c)

4050 m

d)

0300 m

34.

The upper air report from an a/c other than weather reconnaissance a/c has the identification code as

a)

WINTEM

b)

VOLMET

c)

RAWIN

d)

CODAR

35.

TAF AMD covers validity period

a)

the remaining validity period of original TAF

b)

half the validity period of the TAF

c)

the validity starting 2 hr prior to the period of original TAF

d)

full validity period of the TAF

36.

RVR is a measure of

a)

Atmospheric transmissivity and background illumination

b)

Atmospheric transparency, intensity of R/W lights and background illumination

c)

Intensity of background illumination

d)

Atmospheric transmissivity, intensity of R/W lights

37.

SPECI is issued when the visibility changes from

a)

800 to 1500 m

b)

8 km to 6 km

c)

300 m to 400 m

d)

300 m to 150 m

38.

During pre-monsoon the pressure gradient in the S parts of East coast of India is from

a)

N to S along the coast

b)

S to N along the coast

c)

E to W across the coast

d)

W to E across the coast

39.

During SW monsoon the wind at FL400 over Bengaluru is generally

a)

Strong Ely

b)

Strong Wly

c)

Fluctuates between Ely and Wly

d)

Weak Sly

40.

The lapse rate of temperature in a low level inversion is

a)

Positive

b)

negative

c)

insignificant

d)

6.5º C

41.

Which of the following Indian month corresponds to Rainy Season Varsha Ritu

a)

Kwar

b)

Kartik

c)

Magha

d)

Shravana Bhadapad

42.

The Code Name for an aviation forecast in figure code for a specific area is

a)

ROFOR

b)

ARFOR

c)

TAFOR

d)

GAMET

43.

SIGMET message is

a)

Occurring or expected, enroute weather, which may affect safety of the air operation.

b)

Aerodrome forecast in plain language

c)

Special Reports to local ATC unit and concerned operators

d)

Trend type of landing forecast passed to operators

44.

Which of the following Indian month corresponds to Winter Shishira Ritu

a)

Kwar

b)

Pausha

c)

Magha and Phalguna

d)

Shravana

45.

The variable surface wind speed refresh is

a)

< 03 KT

b)

04 KT or less

c)

≥ 02 KT

d)

Calm

46.

Which of the following Indian month corresponds to Sharad Ritu (Post monsoon)

a)

Jyeshtha

b)

Asauj and Kartika

c)

Phalguna

d)

Shravana

47.

TAF VECC 2200300Z 24000KT 3000 FU SCT100 BECMG 0406 6000 SCT030 BKN100 TEMPO 0708 2000 TSRA SCT23CB OVC80~ The above TAF forecasts TS and RA between

a)

0400 and 0600 UTC

b)

0400 and 0600 IST

c)

0700 and 0800 UTC

d)

0400 and 0800 IST

48.

The hailstorms occur from

a)

Both warm and cold clouds

b)

cold clouds only

c)

warm clouds only

d)

NS clouds

49.

SPECI is issued when the height of base of the lowest cloud layer > 5/8 changes to or passes

a)

500m, 300m, 150m, 50m, 25m

b)

450m, 300m, 150m, 50m, 30m

c)

400m, 300m, 150m, 90m, 30m

d)

450m, 300m, 150m, 60m, 30 m

50.

Fog is produced in Fronts by

a)

evaporation and precipitation

b)

frequent Rain

51.

Over the earth deserts are located in the regions of

a)

Equatorial trough

b)

Subtropical high

c)

Polar Front

d)

ITCZ

52.

The air can hold more moisture at MSL over the

a)

Temperate latitudes

b)

20° Latitude

c)

Equator

d)

Poles

53.

With altitude in an isothermal atmosphere the density of the air

a)

does not change

b)

increases with height

c)

first decreases and then decrease

d)

decreases

54.

The Fronts associated with W'ly over NW India in winters are mostly

a)

Warm Occlusion

b)

Cold Occlusion

c)

Cold Fronts

d)

Warm Fronts

55.

In a Cold Occlusion the

a)

Cold air of Cold Front is not the coldest

b)

Cold air of Cold Front is the coldest

c)

Cold air of Warm Front is the coldest

56.

A day is called Rainy Day when the amount of Rainfall in a day is

a)

7.5 mm or more

b)

10 mm or more

c)

2.5 mm or more

d)

at least 1.0 mm

57.

A cold front is defined as the

a)

advancing cold airmass undercutting the warm airmass

b)

warm airmass over riding the cold airmass

c)

retreating cold pool of air

d)

leading cold gust front

58.

In a METAR the third layer of clouds is reported when amount is

a)

3/8 or more SCT, BKN or OVC

b)

5/8 or less SCT, BKN

c)

5/8 or more BKN or OVC

d)

3/8 or more FEW, SCT

59.

SPECI is issued an issued RVR when it changes or passes

a)

150m

b)

200m

c)

400m

d)

900m

60.

Above which datum the cloud base is reported at airports?

a)

above mean sea level

b)

above the aerodrome level

c)

above standard pressure level

d)

above pressure level in ISA

61.

For International Flight documentation, the following data is provided:

a)

SIGWX charts between FL 250 and FL 600

b)

SIGWX charts between FL 250 and FL 600 and forecast 250 hPa wind and Temp. data

c)

SIGWX charts and Upper wind and temperature charts

d)

WAFC generated SIGWX forecast chart only

62.

When visibility is 800 m to 5000 m, in a METAR it is reported in steps of:

a)

100 m

b)

200 m

c)

500 m

d)

1000 m

63.

The Polar Front is:

a)

Continuous

b)

Not continuous

c)

A transition Zone between Polar and Arctic Westerlies

d)

Boundary between Arctic and Polar Air Masses

64.

Most of the weather occurring in India is due to:

a)

Fronts

b)

Cyclones

c)

TS

d)

Monsoon Trough

65.

The Doppler Weather Radar works on the Principles of

a)

Frequency amplification

b)

Change in frequency of return echo

c)

Comparison of drop sizes

d)

Wavelength modification

66.

Flight forecast in "Chart from of documentation" supplied in India consists of

a)

Synoptic charts 03 and 12 UTC and U/A charts for 00 and 12 UTC

b)

Latest surface synoptic chart and upper air charts

c)

SIGWX chart and upper air charts for 150, 300 and 390 hPa

d)

SIGWX chart and prognostic charts for 300,250 and 200 hPa

67.

SIGMET message contains weather information which is

a)

Actual and not a forecast

b)

Forecast only

c)

Both actual and forecast

d)

Actual only

68.

Veering of geostrophic wind at a station with height indicates

a)

Warm air advection

b)

Cold air advection

c)

Subsidence of cold air

d)

Convection of warm air

69.

The wind Born is a

a)

warm Anabatic wind

b)

cold Katabatic wind

c)

violent W'ly wind

d)

light maritime E'ly wind

70.

Will a SPECI be issued when the mean speed has changed by

a)

< 09 kt

b)

10 kt or more

c)

less than 10 kt

d)

> 08 kt

71.

Highest annual rainfall over the earth occurs the regions?

a)

Temperate regions

b)

Tropical regions

c)

Polar regions

d)

Equatorial regions

72.

The most hazardous area for aviation in a cyclone is

a)

about 400 km from eye

b)

eye of the cyclone

c)

wall cloud around the eye

d)

allover the cyclone

73.

The ITCZ

a)

is a region of calm winds and layer type of clouds

b)

affects only N hemisphere in winters

c)

usually lies along the Equatorial Trough

d)

affects S hemisphere in monsoon

74.

The strong W'ly winds which blow in both the hemispheres between 35° and 60° Lat are called:

a)

Roaring Forties

b)

Trades

c)

Jetstreams

d)

Polar W'ly

75.

Cold core low pressure system

a)

intensifies with height

b)

weakens with height

c)

does not change with height

d)

veers with height

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