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How long should the ammeter readings be taken after the equipment is switched on?

The ammeter readings should be taken immediately after switching on the equipment.

They must only be switched on for the minimum time required to check serviceability. (correct)

The equipment should be switched on for an hour before taking ammeter readings.

They should be switched on for five minutes to allow them to stabilize before taking ammeter readings.

How does a rotary knife edge ice detector provide a warning of ice formation?

The rotary knife edge detector does not provide any ice formation warning.

Decreased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit. (correct)

Ice formation stopping the rotation of a rotary knife edge and illuminating a warning light in the cockpit.

Increased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.

What is the source of power for windscreen heating?

Frequency wild generator, direct to the windscreen. (correct)

Battery power, direct to the windscreen.

DC generator, via a transformer.

Frequency wild generator, via a rectifier.

What is the most probable cause if a wing thermal anti-ice annunciator is illuminated permanently in the flight deck without a selection being made?

A short circuit. Signup and view all the answers

Where is the air for anti-icing of the wings obtained from?

Engine compressors. Signup and view all the answers

What is the usual material used for pipelines in a fluid deice system?

Nylon. Signup and view all the answers

What is the primary purpose of the serrated rod ice detector when bench tested?

To measure the screwdriver torque Signup and view all the answers

What is the primary function of windshield heating on aircraft?

To enhance impact resistance Signup and view all the answers

At what temperature and pressure is anti-ice fluid typically applied?

$70^ ext{circ}$C at 100 PSI Signup and view all the answers

What is the main advantage of leading edge fluid de-icing?

The aerodynamic shape is not disturbed Signup and view all the answers

On large transport aircraft, how are the windshield wiper systems typically configured?

As independent systems on each side with the same power source Signup and view all the answers

Which of the following is a common method used to test the operation of an ice detector system?

Screwdriver torque test Signup and view all the answers

What is the correct action to do prior to securing a leading edge de-icing boot?

Remove all paint Signup and view all the answers

When is a 'hot rod' type of ice detector switched on?

When selected by the crew Signup and view all the answers

What causes ice formation on wings?

Supercooled water changing state on contact Signup and view all the answers

After a vibrating rod ice detector has de-iced, when does the warning lamp on the flight deck go out?

Goes out after a set period of time Signup and view all the answers

How is de-misting of passenger windows provided?

Air from the cabin Signup and view all the answers

Why is a deicer boot completely bonded to the leading edge?

To prevent electrical static build up Signup and view all the answers

'Windshield rain repellent' is applied under what conditions?

When rain is on windows and spread by wipers Signup and view all the answers

How do pneumatic rain removal systems operate?

Use engine bleed air for wiper movement Signup and view all the answers

'Windscreen wiper torque tests' are conducted at which location?

'The shaft end' Signup and view all the answers

What is an 'ice deposit' known as when it flows over the airframe before freezing and sticks closely to the surface?

Glaze Ice Signup and view all the answers