ASTM NCATT Connector and Termination
Assessment Mock Exam Newest (2025 -
2026 Update) From Real Past Papers
Questions – A Set Of 100 Most Common
Exam Frequently Tested Questions And
Answers In Details 100% Verified Exam
Highly Recommendable For Grade A+
1. What is the primary purpose of an electrical connector?
A. Increase voltage
B. Reduce resistance
C. Connect electrical circuits while allowing disconnection
D. Generate electrical power
Answer: C. Connect electrical circuits while allowing disconnection
Explanation: Connectors provide a secure electrical path while allowing
equipment to be disconnected for maintenance or replacement.
2. Which connector component provides the electrical contact?
A. Shell
B. Grommet
C. Pin or socket contact
D. Coupling nut
,Answer: C. Pin or socket contact
Explanation: The pin and socket contacts carry electrical current between
connected components.
3. What is the purpose of a connector shell?
A. Carry current
B. Store voltage
C. Protect and align the contacts
D. Insulate the wire
Answer: C. Protect and align the contacts
Explanation: The shell provides mechanical protection, alignment, and
environmental resistance.
4. Before terminating a wire, the technician should first:
A. Apply sealant
B. Install the backshell
C. Verify the correct wire and connector
D. Twist the conductor
Answer: C. Verify the correct wire and connector
Explanation: Proper identification prevents wiring errors and costly rework.
5. Which tool is commonly used to remove insulation without damaging
conductors?
A. Side cutters
B. Needle-nose pliers
C. Wire stripper
D. Utility knife
,Answer: C. Wire stripper
Explanation: A wire stripper removes insulation cleanly while protecting the
conductor.
6. Damaged wire strands during stripping will usually:
A. Improve conductivity
B. Increase insulation strength
C. Reduce mechanical strength and current capacity
D. Prevent corrosion
Answer: C. Reduce mechanical strength and current capacity
Explanation: Missing strands decrease conductor strength and electrical
performance.
7. A properly crimped contact should:
A. Rotate freely
B. Pull off easily
C. Meet pull-test requirements
D. Show exposed insulation inside the crimp
Answer: C. Meet pull-test requirements
Explanation: A proper crimp provides both electrical continuity and mechanical
retention.
8. The most common conductor material used in aircraft wiring is:
A. Steel
B. Aluminum
C. Copper
D. Brass
, Answer: C. Copper
Explanation: Copper offers excellent electrical conductivity and flexibility.
9. Gold plating on contacts primarily:
A. Reduces connector size
B. Adds weight
C. Improves corrosion resistance and conductivity
D. Increases insulation
Answer: C. Improves corrosion resistance and conductivity
Explanation: Gold resists oxidation and provides reliable low-resistance
connections.
10.Which inspection method confirms a contact is fully seated?
A. Wire color
B. Shell diameter
C. Visual inspection and retention check
D. Wire length
Answer: C. Visual inspection and retention check
Explanation: Proper seating ensures reliable electrical and mechanical
performance.
11.The insulation support portion of a crimp:
A. Conducts electricity
B. Grounds the connector
C. Supports the wire insulation against vibration
D. Seals fuel lines
Answer: C. Supports the wire insulation against vibration
Assessment Mock Exam Newest (2025 -
2026 Update) From Real Past Papers
Questions – A Set Of 100 Most Common
Exam Frequently Tested Questions And
Answers In Details 100% Verified Exam
Highly Recommendable For Grade A+
1. What is the primary purpose of an electrical connector?
A. Increase voltage
B. Reduce resistance
C. Connect electrical circuits while allowing disconnection
D. Generate electrical power
Answer: C. Connect electrical circuits while allowing disconnection
Explanation: Connectors provide a secure electrical path while allowing
equipment to be disconnected for maintenance or replacement.
2. Which connector component provides the electrical contact?
A. Shell
B. Grommet
C. Pin or socket contact
D. Coupling nut
,Answer: C. Pin or socket contact
Explanation: The pin and socket contacts carry electrical current between
connected components.
3. What is the purpose of a connector shell?
A. Carry current
B. Store voltage
C. Protect and align the contacts
D. Insulate the wire
Answer: C. Protect and align the contacts
Explanation: The shell provides mechanical protection, alignment, and
environmental resistance.
4. Before terminating a wire, the technician should first:
A. Apply sealant
B. Install the backshell
C. Verify the correct wire and connector
D. Twist the conductor
Answer: C. Verify the correct wire and connector
Explanation: Proper identification prevents wiring errors and costly rework.
5. Which tool is commonly used to remove insulation without damaging
conductors?
A. Side cutters
B. Needle-nose pliers
C. Wire stripper
D. Utility knife
,Answer: C. Wire stripper
Explanation: A wire stripper removes insulation cleanly while protecting the
conductor.
6. Damaged wire strands during stripping will usually:
A. Improve conductivity
B. Increase insulation strength
C. Reduce mechanical strength and current capacity
D. Prevent corrosion
Answer: C. Reduce mechanical strength and current capacity
Explanation: Missing strands decrease conductor strength and electrical
performance.
7. A properly crimped contact should:
A. Rotate freely
B. Pull off easily
C. Meet pull-test requirements
D. Show exposed insulation inside the crimp
Answer: C. Meet pull-test requirements
Explanation: A proper crimp provides both electrical continuity and mechanical
retention.
8. The most common conductor material used in aircraft wiring is:
A. Steel
B. Aluminum
C. Copper
D. Brass
, Answer: C. Copper
Explanation: Copper offers excellent electrical conductivity and flexibility.
9. Gold plating on contacts primarily:
A. Reduces connector size
B. Adds weight
C. Improves corrosion resistance and conductivity
D. Increases insulation
Answer: C. Improves corrosion resistance and conductivity
Explanation: Gold resists oxidation and provides reliable low-resistance
connections.
10.Which inspection method confirms a contact is fully seated?
A. Wire color
B. Shell diameter
C. Visual inspection and retention check
D. Wire length
Answer: C. Visual inspection and retention check
Explanation: Proper seating ensures reliable electrical and mechanical
performance.
11.The insulation support portion of a crimp:
A. Conducts electricity
B. Grounds the connector
C. Supports the wire insulation against vibration
D. Seals fuel lines
Answer: C. Supports the wire insulation against vibration
