Test 01 – test.pilotexam.in

QUIZ START

Results

#1. ***Regarding thunderstorms, the most accurate statement amongst the following is:

there will always be windshear under the cloud

the average movement is in accord with the wind at 10 000 ft

if the cloud base has a temperature below 0°C then freezing rain will occur

the number of lightning flashes is directly proportional to the degree of turbulence

#2. ///// Hazards of the mature stage of a TS cell include lightning, turbulence, and:

windshear, hail and fog

icing, microburst and windshear

icing, drizzle and microburst

microburst, windshear and anvil

#3. #A microburst usually lasts for _ and is about ____across.

5 minutes ; 5 km

30 minutes; 10 NM

45 minutes; 5 NM

20 minutes; 20 NM

#4. A short duration, showery precipitation is associated with

#5. #Thunderstorms caused by _are most common in the summer and byin the__

air masses ; frontal activity ; summer

air masses ; frontal activity ; winter

cold fronts ; air masses ; autumn

lapse rate ; air masses ; late spring

#6. Norwesters normally occur during

Nights

Afternoons

Mornings

#7. Severe TS cells are tilted

in vertical

to the North

to the South

#8. For a severe TS, one of the requirements is strong wind shear

Vertical

Horizontal

Slant

#9. The condition necessary for the formation of a thunderstorm are:

shallow lapse rate, adequate supply of moisture

Steep lapse rate, strong winds

Steps lapse rate ,adequate supply of moisture and trigger action.

#10. The life of a Cb cell is usually

7 to 8 hrs

2 - 3 hr

3 to 4 hrs

#11. For detecting precipitation a Radar wavelength in the range ……………. is suitable

400500 mm

600700 mm

30 to 200 mm

#12. Over the sea, TS are more frequent

afternoon

early morning

night

#13. #How long approximately does a cumulonimbus cell take to complete the full cycle from the cumulus (building) to the dissipating stage?

2-3 hours

1-2 hours

4-5 hours

About 1 hour

#14. The life of Mesoscale Convective Complex TS is

6 to 24 hr

23 hr

34 hr

#15. ***The following is unlikely to be a hazard below a thunderstorm:

severe icing

large variations in pressure setting values

windshear

severe turbulence

#16. Norwesters affect

Bengal, Bihar, Orissa and Assam

N India

Central India

#17. #Hail grows by:

freezing as it leaves the cloud

collision with supercooled water drops

up and down progress in CU cloud

collision with ice crystals

#18. Hail is most likely to fall from a cloud

Having strong vertical development

Having layers

Composed of Ice crystals

#19. Norwesters are

Severe thunderstorms which occur over Peninsula during hot weather period

Severe thunderstorms which occur over NE India during hot weather period

The western disturbances which affect NW India

#20. Norwesters occur during

Mar-May

Dec-Feb

June-Sep

#21. The diameter of Microburst is

less than 2 km

less than 4 km

less than 6 km

#22. A ‘mature’ thunderstorm has

updrafts and downdrafts

updraft only

downdraft only

#23. When flying through on active TS, lightning strikes are most likely

Above 5000 ft and under the anvil

In the temperature band between +10 C and -10 C

In the clear air below the cloud in rain

#24. ***Thunderstorms require a trigger action to release the conditional instability. Which of the following would be the least suitable as a trigger?

Convergence in tropical latitudes

Convection in polar latitudes

Convergence in temperate latitudes

Subsidence in tropical latitudes

#25. For airborne radars wavelength generally used

40 mm

20 mm

60 mm

#26. The wavelength of TS detection X band radar is

20 mm

10 mm

30 mm

#27. The most hazardous cloud for aviation is

#28. Norwesters originates over

Chota - Nagpur hills

Khasi hills

Deccan Plato

#29. #On a significant weather chart the thunderstorm symbol signifies:

severe turbulence and severe icing

moderate turbulence and severe icing

moderate turbulence and moderate icing

moderate/severe turbulence and/or moderate/severe icing

#30. #When approaching at flight level 300 a cumulonimbus cloud with an anvil top, pilots should aim to avoid the cloud by —- NM horizontally if avoiding visually, or by —- NM horizontally if using cloud avoidance radar. Select the appropriate respective ranges from those given below:

10; 20

10; 15

15 ; 10

5 ; 10

#31. The diameter of a Macroburst

4 km or more

> 8 km

< 4 km

#32. Aircraft icing is most favored in the cloud which has temperatures ranging between

below 40 ° C

0° C and - 20° C

20° C and 40° C

#33. Over valley and foothills, TS generally occur during

afternoon

anytime

night & early morning

#34. Hail is

Frozen or partly frozen rain falling from sheet type of clouds

Solid precipitation falling from a deep convective cloud

Solid precipitation which commonly occurs over the mountainous regions in winter.

#35. Loud peals of thunder, frequent flashes of lightning, moderate or heavy showers accompanied by light hail with maximum wind speed 15-40 kt is classified as

Light TS

Moderate TS

Severe TS

#36. ***Thunderstorms are likely if:

air is completely stable, there is sufficient water vapour and there is lifting orographically

there is a warm front

air is unstable, there is sufficient water vapour and there is trigger action

there is a col in winter

#37. The trigger action may take place due to

high pressure

Clear night sky no wind

Orographic lifting

#38. Hazards of the mature stage of TS Cell include lighting, turbulence and

Icing, drizzle and microburst

WS, hail and fog

Icing, microburst and WS

#39. Norwesters occur during

Winter

Post Monsoon

Hot weather

#40. Andhi (blinding storms) occur generally over

S India

N India

NE India

#41. Dust Storm usually occurs over NW India during

Winter

Pre-Monsoon

Post-monsoon

#42. Generally the severest activity of a, heat type, TS is for

2 hrs

3 to 4 hr

30 to 45 min

#43. *** The conditions which must exist to allow thunderstorms to develop are:

a steep lapse rate through a large vertical extent, a low relative humidity and a trigger action

a trigger action, a plentiful supply of moisture and a very stable atmosphere

a steep lapse rate, a stable atmosphere through a large vertical extent and a plentiful

#44. Wind speed in Light DS is

30 kt

25 kt

up to 21 kt

#45. ***During the . . . . . . . . . stage of a thunderstorm cell, the cloud contains . . . . . . . . Complete the above statement correctly using one of the following:

dissipating/up currents and down currents

mature/up currents and down currents

building/up currents and down currents

building/down currents only

#46. Hail grows by

freezing as it leaves the cloud

up and down forces in CU cloud

collision with ice crystals

collision with supercooled water drops

#47. The wavelength of storm detection S-band radar is

100 mm

50 mm

200 mm

#48. Over plains, TS mostly occur during the

afternoon

night

early morning

Finish

Results

#1. ***Regarding thunderstorms, the most accurate statement amongst the following is:

#2. ///// Hazards of the mature stage of a TS cell include lightning, turbulence, and:

#3. #A microburst usually lasts for _________ and is about ____________across.

#4. A short duration, showery precipitation is associated with

#5. #Thunderstorms caused by _________are most common in the summer and by________in the__________

#6. Norwesters normally occur during

#7. Severe TS cells are tilted

#8. For a severe TS, one of the requirements is strong wind shear

#9. The condition necessary for the formation of a thunderstorm are:

#10. The life of a Cb cell is usually

#11. For detecting precipitation a Radar wavelength in the range ……………. is suitable

#12. Over the sea, TS are more frequent

#13. #How long approximately does a cumulonimbus cell take to complete the full cycle from the cumulus (building) to the dissipating stage?

#14. The life of Mesoscale Convective Complex TS is

#15. ***The following is unlikely to be a hazard below a thunderstorm:

#16. Norwesters affect

#17. #Hail grows by:

#18. Hail is most likely to fall from a cloud

#19. Norwesters are

#20. Norwesters occur during

#21. The diameter of Microburst is

#22. A ‘mature’ thunderstorm has

#23. When flying through on active TS, lightning strikes are most likely

#24. ***Thunderstorms require a trigger action to release the conditional instability. Which of the following would be the least suitable as a trigger?

#25. For airborne radars wavelength generally used

#26. The wavelength of TS detection X band radar is

#27. The most hazardous cloud for aviation is

#28. Norwesters originates over

#29. #On a significant weather chart the thunderstorm symbol signifies:

#30. #When approaching at flight level 300 a cumulonimbus cloud with an anvil top, pilots should aim to avoid the cloud by —- NM horizontally if avoiding visually, or by —- NM horizontally if using cloud avoidance radar. Select the appropriate respective ranges from those given below:

#31. The diameter of a Macroburst

#32. Aircraft icing is most favored in the cloud which has temperatures ranging between

#33. Over valley and foothills, TS generally occur during

#34. Hail is

#35. Loud peals of thunder, frequent flashes of lightning, moderate or heavy showers accompanied by light hail with maximum wind speed 15-40 kt is classified as

#36. ***Thunderstorms are likely if:

#37. The trigger action may take place due to

#38. Hazards of the mature stage of TS Cell include lighting, turbulence and

#39. Norwesters occur during

#40. Andhi (blinding storms) occur generally over

#41. Dust Storm usually occurs over NW India during

#42. Generally the severest activity of a, heat type, TS is for

#43. *** The conditions which must exist to allow thunderstorms to develop are:

#44. Wind speed in Light DS is

#45. ***During the . . . . . . . . . stage of a thunderstorm cell, the cloud contains . . . . . . . . Complete the above statement correctly using one of the following:

#46. Hail grows by

#47. The wavelength of storm detection S-band radar is

#48. Over plains, TS mostly occur during the

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#3. #A microburst usually lasts for _ and is about ____across.

#5. #Thunderstorms caused by _are most common in the summer and byin the__