Ser number ___________ Rank & Name __________________________

Ser number ___________ Rank & Name __________________________

FINAL TEST : METEOROLOGY

TRAINEE OFFICERS (STAGE III RSP 172 PC &S173 APC(H) 2 SQN)

Duration: 1 hour 15 minutes

Max Marks: 100

Please read the questions carefully. All the questions are compulsory.

PART A:Write True or False & IF FALSE GIVE THE CORRECT ANSWER.

[20 ( 1=20]

1. Exhaust trails are long and persistent.

2. Axis of monsoon trough usually runs along west coast

3. Over mountainous region it is advisable to fly wind ward incase you experience CAT.

4. Nor-Westers or Kal-Baisakhis usually occur during winter period.

5. In case of icing taking place, immediately ascend and fly above freezing level to avoid icing.

6. FOG/MIST/HAZE in the morning hours is common phenomena over North India during monsoon season.

7. The most intense CAT occurs inside a CB.

8. Jet streams and CAT are closely related to each other

9. During winter season the track of WD shifts southwards.

10. Tropical storms (Cyclonic storms) form over the Bay of Bengal and the Arabian sea during pre-monsoon and post monsoon period.

11. Winter rains over North/North West India are due to the passage of Tropical Storms.

12. WDs generally move across Indian region during June-Sep.

13. Contrails are very hazardous for flying.

14. Sub Tropical Westerly JET (STJ) appears over Indian region in rainy season.

15. Gales are frequent during SW Monsoon Season.

16. Fog/Mist/Haze in the morning hours is common phenomena over north India during monsoon season.

17. To avoid the area of clear air turbulence, immediately turn to North or South.

18. Clear air turbulence zones are generally not seen in patchy nature.

19. Poor visibility due to dust storm occurs over North/North-west India during the Pre-monsoon period.

20. CAT is observed over J & K during the month of October.

PART BFill in the blanks

[10 ( 2=20 ]

1. The track of STJ shifts _________________ wards during from Post Monsoon season to Winter Season.

2. Thunderstorm activity occurs over peninsula, during pre-monsoon season due to __________________discontinuity.

3. In Dust Storm often visibility reduces to less than ______ Km.

4. Severe icing is likely to take place when aircraft is flying through ____________ clouds.

5. On approach of WD pressure starts _________ and temperature starts _________.

6. Severe icing takes between _______oC & ________ oC.

7. After the passage of WD, poor visibility conditions prevail in the morning hours due to ___________________________.8. Heat low during SW monsoon lies over ________________.9. In SW Monsoon Hight Pressure lies over

and low pressure lies over

.10.Cyclonic storm which forms over Central Bay generally move in a __________

PART CMULTIPLE CHOICE QUESTIONS :

[20 ( 1=20 ]

1.Westerly Jet stream first appears over India:

(a) In the month of October

(b) In the last week of December

(c) In the first week of June.

2.Thunderstorms/Dust Storms over N-W India during pre-monsoon season are usually called:

(a) Nor-westers

(b) Andhis

(c) North-Easters

3.In monsoon season W'ly jet streams over India are :-

(a) Weakening

(b) Strengthening

(c) Disappearing

4.Wind speed in Gale associated with storm reaches :-

(a) 20 - 30 Kts

(b) More than 33 Kts

(c) More than 80 Kts

5 In Fog the visibility is :-

(a) 1 - 2 Km

(b) < 1 Km

(c) 1 - 3 Km

6.Jet Streams are:

(a) Stream of strong wind coming out of the jet of aircraft.

(b) Strong winds in the vicinity of a CB cloud.

(c) The narrow belts of very strong winds blowing through the atmosphere of relatively light winds.

7.Easterly Jet streams are traced at mean height of :

(a) 20,000 to 30,000

(b) 30,000 to 40,000

8.Formation of Contrails depends mainly on

(a) Fuel used in the Aircraft

(b) Temp & Humidity of the atmosphere

(c) Pressure & Wind of the atmosphere.

9.In a Jet Stream, Wind speed should be at least

(a) 50 kts

(b) 60 kts

(c) 70 kts

10.During Air maintenance services over Siachen Area, you are likely to encounter CAT during

(a) Jun

(b) Sep

(c) Nov

11.Due to Icing, Stall speed of an aircraft

(a) Decreases

(b) Increases

(c) Shows no effect

12.During Summer Helicopter local flying is affected when Temp reaches:

(a) 38 o C

(b) 40 o C

(c) 42 o C

13.While flying in mountain region, CAT is most probable over

(a) Wind ward side

(b) Lee ward side

(c) Valley

14.During Break Monsoon condition. Maximum rainfall takes place on

(a) Along foothills.

(b) Central India

(c) West coast

15.In winter season W'ly jet streams over India are :-

(d) Weakening

(e) Strengthening

(f) Disappearing

16.The process by which heat is transferred from one area to another through

horizontal wind motion or bodily movement of air masses is known as :-

(a) Radiation

(b) Convection

(c)Advection

17.Over NW India, worst visibility during morning hours is generally experienced during

(a) Monsoon Season

(b) Post Monsoon Season

(c) Winter Season

18.Jet Streams are examples of :

(a) Thermal wind By Jet Airways

(b) Geostropic winds By Earth

(c) Strong winds in Horizontal

19.Contrails persists for longer times when :

(a) Air is of near saturation

(b) Relative humidity is low

(c) Super cooling takes place.

20.Wind speed over land depends on :

(a)Pressure gradient

(b)Level of ground

(c)Land and sea position

PART D Distinguish between Any four of the following [4 ( 5=20]

(Write in 3 to 5 lines in brief)

1. Veering & Backing of wind

2. STJ & TEJ

3. Active Monsoon & Break Monsoon

4. Monsoon low and Induced low in WD.

5. Air frame icing and engine icing.

6. Aviation Weather Hazards of winter and pre-monsoon seasons.

7. Peninsular Trough and Axis of Monsoon Trough

PART E Write short notes on any four of the following. [4 ( 5=20]1. Main synoptic features during S-W monsoon season.

2. General aviation weather hazards during Pre-monsoon season

3. Break monsoon

4. Jet streams in India

5. Contrails.

6. CAT

7. Engine icing and its avoidance.

Ser number ___________ Rank & Name __________________________

FINAL TEST : METEOROLOGY

TRAINEE OFFICERS (STAGE III RSP 172 PC &S173 APC(H) 2 SQN)

Duration : 1 hour 15 minutes

Max Marks : 100

Please read the questions carefully. All the questions are compulsory.

PART A:Write True or False & IF FALSE GIVE THE CORRECT ANSWER.

[20 ( 1=20]

1. Exhaust trails are long and persistent. F2. Axis of monsoon trough usually runs along west coast F3. Over mountainous region it is advisable to fly wind ward incase you experience CAT. T4. Nor-Westers or Kal-Baisakhis usually occur during winter period. F5. In case of icing taking place, immediately ascend and fly above freezing level to avoid icing.F6. FOG/MIST/HAZE in the morning hours is common phenomena over North India during monsoon season. F7. The most intense CAT occurs inside a CB. F8. Jet streams and CAT are closely related to each other. T9. During winter season the track of WD shifts southwards. T10. Tropical storms (Cyclonic storms) form over the Bay of Bengal and the Arabian sea during pre-monsoon and post monsoon period. T11. Winter rains over North/North West India are due to the passage of Tropical Storms. F12. WDs generally move across Indian region during June-Sep. F13. Contrails are very hazardous for flying. F14. Sub Tropical Westerly JET (STJ) appears over Indian region in rainy season. F15. Gales are frequent during Pre-Monsoon Season. T16. Fog/Mist/Haze in the morning hours is common phenomena over north India during monsoon season. F17. To avoid the area of clear air turbulence, immediately turn to North or South. T18. Clear air turbulence zones are generally seen in patchy nature. T19. Poor visibility due to dust storm occurs over North/North-west India during the Pre-monsoon period. T20. CAT is observed over J & K during the month of October. TPART BFill in the blanks

[10 ( 2=20 ]

1. The track of STJ shifts Southwards during from Post Monsoon season to Winter Season.

2. Thunderstorm activity occurs over peninsula, during pre-monsoon season due to peninsular discontinuity.

3. In Dust Storm often visibility reduces to less than ___01___ Km.

4. Severe icing is likely to take place when aircraft is flying through AS & CB clouds.

5. On approach of WD pressure starts falling and temperature starts rising.

6. Severe icing takes between ____0___oC & ____-07____ oC.

7. After the passage of WD, poor visibility conditions prevail in the morning hours due to _fall in Temperature8. Heat low during SW monsoon lies over central Pakistan.9. In SW Monsoon High Pressure lies over Indian Ocean and low pressure lies over central Pakistan.10.Cyclonic storm which forms over Central Bay generally move in a Nwly/Wly direction.

PART CMULTIPLE CHOICE QUESTIONS :

[20 ( 1=20 ]

1.Westerly Jet stream first appears over India:

(d) In the month of October *

(e) In the last week of December

(f) In the first week of June.

2.Thunderstorms/Dust Storms over N-W India during pre-monsoon season are usually called:

(d) Nor-westers

(e) Andhis *

(f) North-Easters

3.In monsoon season W'ly jet streams over India are :-

(g) Weakening

(h) Strengthening

(i) Disappearing *

4.Wind speed in Gale associated with storm reaches :-

(d) 20 - 30 Kts

(e) More than 33 Kts *

(f) More than 80 Kts

5 In Fog the visibility is :-

(d) 1 - 2 Km

(e) < 1 Km *

(f) 1 - 3 Km

6.Jet Streams are:

(d) Stream of strong wind coming out of the jet of aircraft.

(e) Strong winds in the vicinity of a CB cloud.

(f) The narrow belts of very strong winds blowing through the atmosphere of relatively light winds.*

7.Easterly Jet streams are traced at mean height of :

(c) 20,000 to 30,000

(d) 30,000 to 40,000 *

(e) 40000 to 50000

8.Formation of Contrails depends mainly on

(d) Fuel used in the Aircraft

(e) Temp & Humidity of the atmosphere *

(f) Pressure & Wind of the atmosphere.

9.In a Jet Stream, Wind speed should be at least

(d) 50 kts

(e) 60 kts *

(f) 70 kts

10.During Air maintenance services over Siachen Area, you are likely to encounter CAT during

(d) Jun

(e) Sep

(f) Nov *

11.Due to Icing, Stall speed of an aircraft

(d) Decreases *

(e) Increases

(f) Shows no effect

12.During Summer Helicopter local flying is affected when Temp reaches:

(d) 38 o C

(e) 40 o C *

(f) 42 o C

13.While flying in mountain region, CAT is most probable over

(d) Wind ward side

(e) Lee ward side *

(f) Valley

14.During Break Monsoon condition. Maximum rainfall takes place on

(d) Along foothills. *

(e) Central India

(f) West coast

15.In winter season W'ly jet streams over India are :-

(j) Weakening

(k) Strengthening *

(l) Disappearing

16.The process by which heat is transferred from one area to another through

horizontal wind motion or bodily movement of air masses is known as :-

(c) Radiation

(d) Convection

(c)Advection *

17.Over NW India, worst visibility during morning hours is generally experienced during

(d) Monsoon Season

(e) Post Monsoon Season

(f) Winter Season *

18.Jet Streams are examples of :

(d) Thermal wind By Jet Airways

(e) Geostropic winds By Earth

(f) Strong winds in Horizontal *

19.Contrails persists for longer times when :

(d) Air is of near saturation *

(e) Relative humidity is low

(f) Super cooling takes place.

20.Wind speed over land depends on :

(a)Pressure gradient *

(b)Level of ground

(c)Land and sea position

PART D Distinguish between Any four of the following [4 ( 5=20]

(Write in 3 to 5 lines in brief)

1. Veering & Backing of wind

2. STJ & TEJ

3. Active Monsoon & Break Monsoon

4. Monsoon low and Induced low in WD.

5. Air frame icing and engine icing.

6. Aviation Weather Hazards of winter and pre-monsoon seasons.

7. Peninsular Trough and Axis of Monsoon Trough

PART E Write short notes on any four of the following. [4 ( 5=20]1. Main synoptic features during S-W monsoon season.

2. General aviation weather hazards during Pre-monsoon season

3. Break monsoon

4. Jet streams in India

5. Contrails.

6. CAT

7. Engine icing and its avoidance.

-----------------------------------------------****-------------------------------------------------------

Part A

(Answer Any Four) 24 Marks

1. Write aviation weather hazards and significant synoptic systems that affect India in the Pre-monsoon period.

2. Write five types of Monsoon activities over land areas and explain.

3. What is the weather associated with the WDs and write the sequence of weather activities with the approach and departure of a WD.

4. What are the various types of jet streams that affect Indian region

5. Write the precautions to be taken while filling a balloon from LP generator

6. Write the annual check of Met Equipment Inventory.

Part B

(Answer any four) 16 MARKS

1.Write short notes on any four

(a) AMT

(b) Monsoon Depression

(c) Peninsular discontinuity

(d) Break monsoon

(e) Weekly maintenance of Barometer, Wet bulb Thermometer, Barograph and Rain gauge.

(f) Procedure to convert an Insat picture from SIRAVDS to JPG format to include in the briefing.

Part C

(write all) 20 Marks

1. Intermittent denotes ________________________________________

2. Moderate Dust storm is _________________________________________in code.

3. The period between winter to SW monsoon is _____________________& SW monsoon to Winter is____________

4. Cyclonic storm is associated with wind speed of _______________________________

5. The internet sites maintaining satellite pictures are ________________________________( any two)

6. 98TSSA denotes _____________________

7. If Lightning and Distant RA is observed it is recorded in CWR as _______________________

8. Amount of precipitation since 0300 GMT 997 is _______________________mm

9. Simultaneous weather occurrence of Tshower and Snow is denoted as ______________________

10. Simultaneous weather occurrence of mist and Drizzle is_________________________________

11. Shower of Rain and snow mixed, moderate or heavy is __________________________________

12. Tracks of WD shifts to Lat ___________________________in February month.

13. Hakimpet gets Ts activity mainly from ___________________direction.

14. To declare a Bad Weather day, Weather should occur for >_________________________hours in a day.

15. The thermometers are set every day at ________________________

16. In monsoon LOPAR/ DEPRESSION from Arabian sea moves ___________________direction in the month JUNE.

17. A CB moves with the wind at ________________________________levels

18. The wind associated with the CB is known ________________________________________

19. The Simultaneous occurrence of Shower and Haze is reported as _____________________

20. Recurvature of a Low pressure system is _______________________________________

Part D

Choose true or false. If false write correct answer.

(write all) 20 Marks

1. Dense fog is 0-50 mt with RH >75%

2. Heavy pptn for the amount in 24 hrs is 65-84.9mm

3. WDs are not seen in the SW Monsoon months.

4. Seasons are classified on the basis of Temperature and Pressure

5. Low pressure Area has wind less than 17 Kt.

6. The Symbol for severe turbulence is

7. Monsoon trough shifts to foothills of Himalayas in an active monsoon condition.

8. As the temperature is uniform over the country during SW monsoon the winds are strong over the country.

9. A CB top is at the height where divergence is required to be max to allow fast growth of a CB cell.

10. In the wake of a WD low clouds are seen over a station.

11. The SIRAVDS picture is stored in the BMP format

12. The max zone of pptn for a LOPAR in SW Monsoon is the SW sector

13. The 97 TS denotes distant RA/TSH

14. In a Dust storm the vis is < 2000 m

15. TEJ is seen over the country in post Monsoon period.

16. Gale warning for this station is given only when the wind speed is likely to exceed 34 kts.

17. Windows based computer runs on DOS operating system

18. CTRL+ALT+DEL usage deletes the current used file.

19. PSP Software is used to convert any file in to JPEG?JPG format

20. Hyderabad is covered in the Rayalaseema Met division.

Part D

Multiple choice.

(write all) 20 Marks

1. Cloudy nights in winter are

(a) Warmer

(b) Colder

(c) Rainy

(d) None

2. Closer the Isotherms Winds are

(a) Weaker

(b) strong

(c) very strong

(d) None

3. ALLOK in Air force is equal to Civil term

(a) NWP

(b) CAVOK

(c) RAPID

(d) None

4.The lowest layer of Atmosphere is

(a) Tropopause

(b) Troposphere

(c) Stratosphere

(d) Sea level

5. The term Few amount denotes

(a) 1-2 octa

(b) 3-4 octa

(c) 4-6octa

(d) 8 octa

6.Weather warning for SSW due to convective clouds in this station is same as

(a) RA/Tsh warning with SSW

(b) Gale warning

(c) only SSW warning (d) None

7. Break monsoon is

(a) Lots of breaks in AMT

(b) Shift of AMT to foothills of Himalayas(c) AMT shift to peninsula

(d) None

8. Dangerous icing is

(a) Airframe Icing

(b) Engine Icing

(c) Wing tip Icing

(d) None

9. Occasional is

(a) Once in a while

(b) Always

(c) Rainy

(d) None

10. WO are employed as D Met Os

(a) To relax Commissioned Officers(b) To utilise the talent of Met ASSTs (c) due to AFO 1/2000(d) None