EASA DGCA Module 3.2Static Electricity and Conduction (3of3)

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Sub-Module 02 - LEVEL-2 Static Electricity and Conduction Static electricity and distribution of electrostatic charges; Electrostatic laws of attraction and repulsion; Units of charge, Coulomb's Law; Conduction of electricity in solids, liquids, gases and a vacuum.

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What could happen if an aircraft with static charge lands without proper discharge?
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1 point

Nothing significant

It could create an electric shock hazard

It will fly more smoothly

What phenomenon does the bonding system help to prevent within an aircraft *

1 point

Spark discharges due to potential differences

Increase in speed

Decrease in altitude

What causes corona discharge on an aircraft? *

1 point

A high static charge potential reaching a threshold

Low-altitude flying

Strong winds

Which part of the aircraft typically has the highest potential for corona discharge? *

1 point

Wing tips, trailing edges, and propeller tips

The fuselage

The cockpit

What additional protection is required for aircraft using sophisticated digital computing techniques?
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1 point

Special suppression filters and metallic shielding over system cables

Extra insulation on wires

Thicker plastic covers

Why is the bonding of a fuel tanker to the aircraft important during refueling? *

1 point

To speed up the refueling process

To equalize potentials and prevent sparks

To reduce fuel consumption

Why is it undesirable to have a potential difference between the aircraft and the ground after landing? *

1 point

It is not significant

It creates an electric shock hazard and spark discharge risk

It improves aircraft performance

How does the bonding system affect radio and navigational aid signals? *

1 point

It interferes with them

It reduces interference

It amplifies them

What are static discharge wicks used for on an aircraft?
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1 point

To decorate the aircraft

To provide a controlled exit for static charges and reduce radio frequency interference

To increase aircraft speed

What is the purpose of the tungsten needles on static dischargers? *

1 point

To keep corona voltage low and ensure discharge at specific points

To increase static buildup

To improve the aircraft's appearance

What can corona discharge lead to in poor visibility conditions? *

1 point

Reduced aircraft speed

A visible glow and radio frequency interference

Enhanced radar detection

How are high-performance non-metallic materials advantageous in aircraft?
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1 point

They are heavier

They offer structural benefits while reducing the metallic content of the airframe

They increase static charge buildup

What is the role of capacitors in suppressors used in screening systems? *

1 point

To provide a low resistance path and reduce interference

To store energy for emergency use

To increase the voltage

Where are static discharge wicks typically located on an aircraft?
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1 point

On the nose of the aircraft

On the trailing edges of ailerons, elevators, and rudder

Inside the cockpit

What materials are used in new technology aircraft to reduce static charge buildup?
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1 point

Non-metallic composite materials

Pure metals

Wood and fiberglass

What is the primary function of the bonding conductors used for flight control surfaces? *

1 point

To ensure electrical continuity and reduce potential differences

To increase the aircraft's weight

To improve the aerodynamics

What is the function of screening in electrical systems of an aircraft?
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1 point

To provide a low resistance path for voltages producing unwanted radio frequency interference

To increase the voltage of the system

To disconnect electrical equipment

What type of materials is used in the construction of static discharge *

1 point

Nichrome wires

Copper rods

Plastic fibers

What is one method to provide a leakage path for static charge dissipation in an aircraft?
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1 point

Using a conductive compound in the nosewheel or tail-wheel tyre

Using non-conductive materials in the wheel

Isolating the wheels from the ground

What is one method used to screen cables in an aircraft?
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1 point

Enclosing cables in a metal braided sheath

Using plastic tubes

Wrapping cables with insulating tape

How can the risk of fire or explosion be minimized during aircraft refueling?
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1 point

By refueling quickly

By bonding the aircraft to the tanker and the ground

By refueling with the engines running

Why must the metal screens and suppressors be connected to the main earth or ground system?
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1 point

To increase signal strength

To ensure effective grounding and reduce interference

To add weight to the aircraft

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