EWIS 2
EWIS 2 Quiz
Test your knowledge on Electrical Wiring Interconnect System (EWIS) with our comprehensive quiz designed for aviation professionals. This quiz covers essential topics such as wire insulation, crimping tools, and electrical safety, ensuring you're well-equipped in handling wiring systems.
Whether you're preparing for certification or just looking to refresh your understanding, this quiz provides:
- Multiple choice questions
- Immediate feedback on your answers
- A chance to improve your knowledge on EWIS standards
It exhibits superb abrasion and insulation protection. It is a lightweight composite of Teflon and Kapton and is the only wire meets the FAR standards.
TKT - MIL-W-22759/80-92
Aromatic Polyimide (Kapton) - MIL-W-81381/11
Poly Vinyl Chloride - MIL-W-5086
It refers to the health of the wire's insulation and is related to the various conditions the wiring is exposed to rather than its age in years.
Wiring Degradation
Aging
Degradation
This book is an effort by the agency to officially endorse these best practices and to dispense this information industry wide so the benefits of this information can be effectively realized.
SWPM/ESPM
ATSRAC
EWIS
What is the manual used by Airbus?
ESPM
SWPM
EWIS
What is the manual used by Boeing?
ESPM
SWPM
EWIS
When preparing to work on de-energized electrical circuits, ensure that
Closed the circuit breaker, Secure the circuit breaker by using a respective (locking collar) against reactivation, Attached the warning tag or sticker to the circuit breaker and the switch, Cover open clamps of adjoining system to avoid accidental touching, and Implement a voltage test before starting to work.
Open the circuit breaker, Secure the circuit breaker by using a respective (locking collar) against reactivation, Attached the warning tag or sticker to the circuit breaker and the switch, Cover close clamps of adjoining system to avoid accidental touching, and Implement a voltage test before starting to work.
Open the circuit breaker, Secure the circuit breaker by using a respective (locking collar) against reactivation, Attached the warning tag or sticker to the circuit breaker and the switch, Cover open clamps of adjoining system to avoid accidental touching, and Implement a voltage test before starting to work.
Where electrical shock and burns are concerned, it is the ___ that does the damage.
Current
Voltage
Resistance
Are stored on the surfaces of physical objects, including the human body. It damages the ESDS which can degrade the performance, change basic characteristics, and cause catastrophic failure.
Aging
ESD
Wiring Degradation
When working with OBRM (On Board Replaceable Modules) that are not LRU's. It is necessary to
Ground yourself to discharge ESD.
There is no specific protection because non-LRU's have built-in protection to prevent ESD damage
Wear wrist straps
It must be installed within 4-6 inches connectors.
Spare Wire Caps
Closed End Splices
All wires and splice
After installation of wire caps, it must be tied and stowed near the unused termination and stowed wires must be visible at the outside of the bundle.
Closed End Splices
Spare Wire Caps
All wires and splice
Only one unstripped wire allowed per end cap.
Closed End Splices
All wires and splice
Spare Wire Caps
The correct splice size is determined by the ____ of all wires to be inserted.
Cross-sectional area.
Number of wires
Length of the wire
After crimping, closed end splices may be placed side by side in
Downright position within 30 degrees of each other.
Upright position within 30 degrees of each other.
Upright position above 30 degrees of each other.
Wire Size Color Code (26-24)
Red
Blue
Yellow
Wire Size Color Code (22-18)
Red
Blue
Yellow
Wire Size Color Code (16-14)
Red
Blue
Yellow
Wire Size Color Code (12-10)
Red
Blue
Yellow
Before we use the crimping tool, it must be
Calibrated
Free from damage
It must be clean
When we calibrate crimping tool using a "NO GO" Gaging
The gage must not enter between the Indenter Tips and it means unserviceable.
The gage must not enter between the Indenter Tips and it means serviceable.
The gage must enter between the Indenter Tips and it means serviceable.
Is assigned to an airplane from a block reserved for a specific customer.
Registration number
Operator Code
Blocker Number
Is assigned by the customer and is usually based on the registration number.
Operator Code
Blocker Number
Registration number
Is assigned by the responsible government aviation authority.
Operator Code
Registration number
Blocker Number
Reflects the manufacturing rollout sequence for each model.
Operator Code
Blocker Number
Line number
What is chapter 91?
Charts and List
Charts
List
Contains airplane station arrangement, wire zones, major wire bundle pathways, panel and equipment shelf-locations, circuit breaker and etc…
Chapter 91 Charts and List
Chapter 91 Charts
Chapter 91 List
When using the insulation device or tester, it is a good wire insulation if
It has lower resistance, and the indication does change.
It has high resistance value, and the indication does change
It has high resistance value, and the indication does not change
When using the insulation device or tester, it is a bad wire insulation if
It has lower resistance, and the indication does change.
It has lower resistance, and the indication does not change.
It has high resistance value, and the indication does not change
Have a broad scope but little depth
Simplified Schematics
Block diagram
Schematics
Have schematic symbols but do not show sufficient detail to permit isolation fault
Block diagram
Schematics
Simplified Schematics
Show all line replaceable items, all a/c wiring within a sub-system and give sufficient depth for a/c fault isolation manual.
Schematics
Block diagram
Simplified Schematics
Shows all components and wires.
Schematic Diagram
Wiring Diagram
Block Diagram
What do you mean by Dielectric?
Current
Voltage
Insulator
If a standard wire is damaged, what you must do first?
Locate the damage cable and identify
Locate and eliminate the cause for the damage
Examine the cable to find out what type of damage occurred.
It means that the wire has to be cut at the damaged part and an applicable splice has to be installed on the damage.
Permanent Damage
Repair Type 1 C
Temporary Repair
A collective term comprising selected GVI and visual checks that are applied to each zone, define by access and area to check system and power plant installations and structure for security and general condition.
Enhanced Zonal Analysis Procedure
Detailed Inspection
Zonal Inspection
An analytical logic procedure specifically designed to identify applicable and effective task
Enhanced Zonal Analysis Procedure
Detailed Inspection
Zonal Inspection
It allows tactile examination to determine condition.
Enhanced Zonal Analysis Procedure
Detailed Inspection
General Visual Inspection
This level of inspection is made under normally available lighting conditions and from within touching distance unless otherwise specified.
Enhanced Zonal Analysis Procedure
Detailed Inspection
General Visual Inspection
Which is correct?
"Clean and protect as you go"
"Clean and protest as you go"
"Clean and assume as you go"
Flammable leakage zone is an area where leakage of flammable fluid or flammable vapors can occur as result of:
Two failure, and Leakage during normal operation.
One failure, and Leakage during normal operation.
One failure, and Leakage during not normal operation.
How can we prevent short circuits in the electrical system? It is usually caused by chafing of wires.
Clamping
Wiring Tool Gun
Clamping or protecting the bundle with tapes, sleeves, or tubes.
Could destroy the insulation of wires and cables
Aggressive Fluid
Conductive Fluid
Contaminated Fluid
Can cause short circuits in electrical
Aggressive Fluid
Conductive Fluid
Contaminated Fluid
This is very important operation because you can detect a damage in progress!
Inspection
Preparation
Cleaning
This is primarily used due to the overall best properties.
Copper Wiring
Aluminum Wiring
Kapton Wiring
The higher the number of AWG
The size diameter is small and has high current capacity
The size diameter is small and has lower current capacity
The size diameter is big and has lower current capacity
The lower the number of AWG
The size diameter is big and has lower current capacity
The size diameter is small and has lower current capacity
The size diameter is big and has high current capacity
Wiring Identification W4102 - 2001R - 24. Which one is the Wire Bundle number?
W4102
2001R
24
Wiring Identification W4102 - 2001R - 24. Which one is the Wire Serial number?
W4102
2001
2001R
Wiring Identification W4102 - 2001R - 24. Which one is the color?
W4102
2001R
R
Wiring Identification W4102 - 2001R - 24. Which one is the gauge?
24
2001R
2001
The current capacity of wires is directly dependent on the?
The insulation and the wire size.
Conductor material, the insulation and the wire size.
Wire Size
External Contamination Sources
Paint, Corrosion Inhibitor, Drill shavings/Swarf and FOD
Hydraulic, engine and apu oils, fuel, greases, lint/dust, bleed air and hot areas
De-Ice Fluids, Water and Rain, Snow and Ice, Miscellaneous and Air Corrosion
Internal Contamination Sources
Hydraulic, engine and apu oils, fuel, greases, lint/dust, bleed air and hot areas
De-Ice Fluids, Water and Rain, Snow and Ice, Miscellaneous and Air Corrosion
Paint, Corrosion Inhibitor, Drill shavings/Swarf and FOD
Other Contamination Sources
Hydraulic, engine and apu oils, fuel, greases, lint/dust, bleed air and hot areas
De-Ice Fluids, Water and Rain, Snow and Ice, Miscellaneous and Air Corrosion
Paint, Corrosion Inhibitor, Drill shavings/Swarf and FOD
General conditions for the repair of wire and cable
A repair must not be put in conduit
A repair must be put on bend of a wire or a cbale
A repair is allowed on connector backshell or a backshell adapter
Are mainly used inside the pressurized cabin.
Metal Clamps
Nylon Clamps
Clamps
Are mainly used for hot areas on the aircraft
Nylon Clamps
Clamps
Metal Clamps
Wiring Harness movement allowed?
Longitudinal Movement
Lateral Movement
Longitudinal and Clockwise and Counter Clockwise
Phase A
Red
Yellow
Blue
Phase B
Red
Yellow
Blue
Phase C
Red
Yellow
Blue
When using the ohmmeter, the wire is damaged if
Indication does not change
Indication does change
When using the ohmmeter, the wire is not damaged if
Indication does not change
Indication does change
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