SNOW AND ICE – Air – DGCA Question Bank For Politics

#1. The areas heated by a typical bleed air anti icing system include?

Leading and trailing edges

Leading edges, leading edges flaps and slats, and engine air intake lips

Trailing edge flaps

The entire wing surface

#2. Anti icing/de icing of the wings of a modern turbo-prop aircraft is typically achieved using?

Hot air.

Liquids

Pneumatic boots

Electrical heaters

#3. Windscreen heating system?

Increase the danger of damage in the event of a bird strike

Use engine bled air to heat the centre section only

Use engine bleed air to heat the entire screen

Use electrical system to maintain constant temperature across the entire screen

#4. Electrically heated turbo-prop propeller system?

Provide de-icing and use a 10 second working cycle

Provide de-icing using a frequency to 10 cycles per second

Provide anti-icing and use a 10 second working cycle

Provide anti-icing using a frequency of 10 cycles per second

#5. Windscreens are kept clear in heavy rain by using?

Liquid repellents

Windscreen wipers

Bleed air

All of the above

#6. Hot air anti-icing is provided to?

Leading edges only

Leading edges and flaps

Leading edge flaps and slats

Leading edges plus leading edge flaps and slats

#7. Thermal de-icing systems include? 1. Electrical heating. 2. Bled air. 3. Fluids. 4. Pneumatic boots.

1,2

1,2,3

2,3,4.

All of the above

#8. Pneumatic de-icing systems are most commonly used?

Wings

Propellers

Air intakes

Pitot probes

#9. Electrical de-icing is most commonly used?

Horizontal stabilisers and fins

Wings leading edges

Air intakes

Propellers

#10. What type of air is used in air intake anti-icing system.

Combustion chamber air.

By pass air

Compressor air

Air conditioning pack air

#11. Pneumatic boot de-icing systems are normally used?

Windscreen and nose cones

Propellers

Air intakes

Wing leading edges

#12. The use of bleed air anti-icing is likely to result in?

Excessive engine temperatures.

Excessive decreases in thrust

Increased JPT.

Decreased EPR.

#13. One of the advantage of electrical anti-icing is?

Less energy is required than with other systems

Aerodynamic flow is not affected

More effective

Can clear greater thickness of ice

#14. The windscreen must be heated slowly to?

Remove ice.

Increases its impact resistance

Prevent thermal shock

Prevent the formation of ice

#15. Bleed air anti icing system draw air from?

The engine compressor

The turbocharger

The air conditioning packs

The APU.

#16. Rain repellent?

Clears rain from the windscreen

Clears rain from the fuselage to prevent icing

Clears rain from the engine intake

Prevent rain ingress into the fuel tanks.

#17. When heated to 60°C, type 11 de-icing fluid?

Sprays more easily

Is more effective

Is more effective and sprays more easily

Is less effective

#18. Why is type II de-icing fluid more effective than type I?

It is thicker

It is thinner

It sprays more easily

It is thinner so it covers more area

#19. Rubber de-icing shoes are operated by?

Engine bleed air

HP compressed air

APU air.

Hydraulic fluid

#20. De-icing over shoes are normally made from?

Synthetic rubber

Natural rubber

Rubberised fabric

Neoprene.

#21. Type II de-icing fluid?

Is cheaper than type 1.

Is thinner than type 1.

Has a thickening agent added to it

Has a thinning agent added to it

#22. The freezing tamperature of JET A1 is?

0°C.

-10°C.

-47° C.

-57°C.

#23. The freezing temperature of JET A is?

0°C.

-40°C.

-47°C.

-57°C.

#24. The vibration frequency of a vibrating rod ice detector?

Is 400 Hz

Is 40 Hz

Increases as ice builds up

Decreases as ice builds up

#25. Why is type II anti-icing fluid preferable to type I?

Because it sprays on more evenly

Because it is thicker and so stays on longer.

Because it is effective down to lower temperatures

Because it is able to remove thinker ice

#26. Before taxing through an overhead gantry de-icing system?

APU must be shut down

APU and engines may be running but bleed valves must be shut

APU must be stopped but engines must e running with bled valves open

APU and engine must be shut down and bleed valves shut.

#27. Which de-icer will give the best holdover time at 0°C?

100% cold spray of type I fluid

100% cold spray of type II fluid

50% hot spray of type I fluid

50% hot spray of type II fluid

#28. Hot de-icing fluid is sprayed on at _____°C, using a pressure of psi?

50 50

50 100

70 70

70 100

#29. The timer mechanism in a propeller de-icing system ensures that?

All propellers are de-iced every 5 minutes

Only one propeller is de-iced at any one time

Only two propellers are de-ice at any one time

All propellers are de-iced at the same time

#30. Heating FPD fluid to an excessive temperature will?

Render it ineffective

Cause it to gel and remain on the surfaces in flight

Reduce its adherence properties

Cause its viscosity to decrease.

#31. Which of the following provides the longest holdover at -5°C?

50/50 hot mix of type II fluid

50/50 cold mix of type II fluid

100% type II fluid applied hot

100% type II fluid applied cold

#32. Hot water de-icing is effective for?

1 minute

2 minutes

3 minutes

4 minutes

#33. Type II de-icing fluid?

Is thinner enabling it to spry better than type I.

Is thicker, enabling it to remain on the surfaces longer than type I.

Has a higher percentage of ethylene glycol than type I.

Requires heating before application

#34. What is the maximum holdover time that can be provide by a 50/50 hot mix of type II de-icing fluid, in freezing fog at an ambient temperature of -3°C?

30 minutes

45 minutes

1 hour

2 hour

#35. What are the limiting ambient and spray temperatures for removing snow using hot water spray?

0°C, 75°C.

-5°C 75°C.

-7°C 95°C.

-7°C 100°C

#36. hermal de-icing systems?

Require large volumes of hot bleed air

Requires small volumes of high pressure bleed air

Requires a source of hot water

Require a frequency wild AC generator

#37. Pneumatic de-icing system employ?

Air ejector holes along the leading edges of the wings

Flat inflatable tubes attached to the leading edges of the wings

High pressure air pumps to provide compressed air

High temperature bleed air fed through double skinned leading edges

#38. Integral fluid de-icing systems can be used?

Only once per flight

On the ground only

In the air only

On the ground or in the air.

#39. Integral de-icing systems can be used?

To prevent ice build up in flight

To remove ice in flight

To prevent ice build up and to remove ice in flight

To remove ice on the ground only, and to prevent subsequent ice build up in flight.

#40. A vibrating rod indicates ice by?

Decreasing its vibration frequency from 40 KHz as ice builds up.

Decreasing its vibration frequency from 50 Hz as ice builds up.

Increases its vibration frequency from 40 KHz as ice builds up.

Increases its vibration frequency from 50 Hz as ice builds up.

Dgca Question Bank For Pilots

Results

#1. The areas heated by a typical bleed air anti icing system include?

#2. Anti icing/de icing of the wings of a modern turbo-prop aircraft is typically achieved using?

#3. Windscreen heating system?

#4. Electrically heated turbo-prop propeller system?

#5. Windscreens are kept clear in heavy rain by using?

#6. Hot air anti-icing is provided to?

#7. Thermal de-icing systems include? 1. Electrical heating. 2. Bled air. 3. Fluids. 4. Pneumatic boots.

#8. Pneumatic de-icing systems are most commonly used?

#9. Electrical de-icing is most commonly used?

#10. What type of air is used in air intake anti-icing system.

#11. Pneumatic boot de-icing systems are normally used?

#12. The use of bleed air anti-icing is likely to result in?

#13. One of the advantage of electrical anti-icing is?

#14. The windscreen must be heated slowly to?

#15. Bleed air anti icing system draw air from?

#16. Rain repellent?

#17. When heated to 60°C, type 11 de-icing fluid?

#18. Why is type II de-icing fluid more effective than type I?

#19. Rubber de-icing shoes are operated by?

#20. De-icing over shoes are normally made from?

#21. Type II de-icing fluid?

#22. The freezing tamperature of JET A1 is?

#23. The freezing temperature of JET A is?

#24. The vibration frequency of a vibrating rod ice detector?

#25. Why is type II anti-icing fluid preferable to type I?

#26. Before taxing through an overhead gantry de-icing system?

#27. Which de-icer will give the best holdover time at 0°C?

#28. Hot de-icing fluid is sprayed on at _________°C, using a pressure of ____ psi?

#29. The timer mechanism in a propeller de-icing system ensures that?

#30. Heating FPD fluid to an excessive temperature will?

#31. Which of the following provides the longest holdover at -5°C?

#32. Hot water de-icing is effective for?

#33. Type II de-icing fluid?

#34. What is the maximum holdover time that can be provide by a 50/50 hot mix of type II de-icing fluid, in freezing fog at an ambient temperature of -3°C?

#35. What are the limiting ambient and spray temperatures for removing snow using hot water spray?

#36. hermal de-icing systems?

#37. Pneumatic de-icing system employ?

#38. Integral fluid de-icing systems can be used?

#39. Integral de-icing systems can be used?

#40. A vibrating rod indicates ice by?

#28. Hot de-icing fluid is sprayed on at _____°C, using a pressure of psi?