CHAPTER 1 Principles of
Transmission Exam 2025 Questions
and Answers 100% Pass
What is an electrical conductor? - ✔✔Any material that can carry current from one
point to another.
What are 4 common electrical conductors used to make wire and cable? - ✔✔1.
Copper
2. Copper covered steel
3. High Strength copper alloys
4. Aluminum
Why are silver and gold not generally good conductors? - ✔✔Because of their high
cost.
Which conductor sets the standard for comparing conductivity? - ✔✔Copper
What type of conductor is typically used for aerial, self supporting drop wire? -
✔✔Copper- Covered
How does the alloying of pure copper affect it's conductivity? - ✔✔Adversely
Where are aluminum conductors commonly used? - ✔✔Electrical Utility
Distribution Lines
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
,What type of solid conductor has the poorest corrosion resistance? - ✔✔High
Strength Alloy
What type of solid conductor has the poorest oxidation resistance? - ✔✔Aluminum
What type of solid conductor has the best tensile strength? - ✔✔High Strength Alloy
How are stranded conductors created? - ✔✔By twisting or stranding together a
number of small gauge solid conductors to create a single, larger conductor.
What are 4 advantages of solid conductors? - ✔✔1. Less costly
2. Less complex termination systems
3. Better transmission performance at high frequencies
4. Less resistance
What are 3 advantages of stranded conductors? - ✔✔1. More flexible
2. Longer flex life
3. Less susceptible to damage during crimp termination process.
What is a composite conductor? - ✔✔A conductor constructed from nontraditional
materials.
What are 5 advantages of composite conductors? - ✔✔1. Highly flexible
2. Lightweight
3. Inexpensive
4. Easily embedded
5. Low coefficient of expansion
What are 4 disadvantages of composite conductors? - ✔✔1. Poor analog transmission
characteristics including high attenuation, especially above 4000 Hz.
2. Extremely poor digital transmission characteristics
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
, 3. Easily damaged unless encased in a rigid material.
4. Inconsistent quality
Are cables with composite conductors recommended for use with modern
telecommunications networks? - ✔✔No
What is the purpose of insulation on a cable? - ✔✔To isolate the flow of current by
preventing direct contact between conductors and a conductor and it's environment.
How do dielectrics reduce EM coupling between conductors? - ✔✔By increasing
conductor separation
What is the dielectric constant? - ✔✔The ratio of capacitance of an insulated
conductor to the capacitance of the same conductor un insulated in the air.
What does dielectric strength measure? - ✔✔The maximum voltage that an
insulation can withstand without breakdown.
What is dissipation factor? - ✔✔The relative power loss in the insulation due to
molecular excitement and subsequent kinetic and thermal energy loss.
What is insulation resistance? - ✔✔The insulation's ability to resist the flow of
current through it.
What is the main reason for twisting conductor pairs? - ✔✔To minimize crosstalk
and noise by decreasing capacitance unbalance and mutual inductance coupling
between pairs.
What is pair to pair capacitance unbalance? - ✔✔A measure of the electrical field
coupling between two pairs if a differential voltage is applied on one pair and a
differential noise voltage is measured on another pair in close proximity.
What is mutual inductance? - ✔✔A measure of the magnetic field coupling between
two pairs if a differential current is applied on one pair and a differential noise
current is measured on another pair in close proximity.
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 3
Transmission Exam 2025 Questions
and Answers 100% Pass
What is an electrical conductor? - ✔✔Any material that can carry current from one
point to another.
What are 4 common electrical conductors used to make wire and cable? - ✔✔1.
Copper
2. Copper covered steel
3. High Strength copper alloys
4. Aluminum
Why are silver and gold not generally good conductors? - ✔✔Because of their high
cost.
Which conductor sets the standard for comparing conductivity? - ✔✔Copper
What type of conductor is typically used for aerial, self supporting drop wire? -
✔✔Copper- Covered
How does the alloying of pure copper affect it's conductivity? - ✔✔Adversely
Where are aluminum conductors commonly used? - ✔✔Electrical Utility
Distribution Lines
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
,What type of solid conductor has the poorest corrosion resistance? - ✔✔High
Strength Alloy
What type of solid conductor has the poorest oxidation resistance? - ✔✔Aluminum
What type of solid conductor has the best tensile strength? - ✔✔High Strength Alloy
How are stranded conductors created? - ✔✔By twisting or stranding together a
number of small gauge solid conductors to create a single, larger conductor.
What are 4 advantages of solid conductors? - ✔✔1. Less costly
2. Less complex termination systems
3. Better transmission performance at high frequencies
4. Less resistance
What are 3 advantages of stranded conductors? - ✔✔1. More flexible
2. Longer flex life
3. Less susceptible to damage during crimp termination process.
What is a composite conductor? - ✔✔A conductor constructed from nontraditional
materials.
What are 5 advantages of composite conductors? - ✔✔1. Highly flexible
2. Lightweight
3. Inexpensive
4. Easily embedded
5. Low coefficient of expansion
What are 4 disadvantages of composite conductors? - ✔✔1. Poor analog transmission
characteristics including high attenuation, especially above 4000 Hz.
2. Extremely poor digital transmission characteristics
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
, 3. Easily damaged unless encased in a rigid material.
4. Inconsistent quality
Are cables with composite conductors recommended for use with modern
telecommunications networks? - ✔✔No
What is the purpose of insulation on a cable? - ✔✔To isolate the flow of current by
preventing direct contact between conductors and a conductor and it's environment.
How do dielectrics reduce EM coupling between conductors? - ✔✔By increasing
conductor separation
What is the dielectric constant? - ✔✔The ratio of capacitance of an insulated
conductor to the capacitance of the same conductor un insulated in the air.
What does dielectric strength measure? - ✔✔The maximum voltage that an
insulation can withstand without breakdown.
What is dissipation factor? - ✔✔The relative power loss in the insulation due to
molecular excitement and subsequent kinetic and thermal energy loss.
What is insulation resistance? - ✔✔The insulation's ability to resist the flow of
current through it.
What is the main reason for twisting conductor pairs? - ✔✔To minimize crosstalk
and noise by decreasing capacitance unbalance and mutual inductance coupling
between pairs.
What is pair to pair capacitance unbalance? - ✔✔A measure of the electrical field
coupling between two pairs if a differential voltage is applied on one pair and a
differential noise voltage is measured on another pair in close proximity.
What is mutual inductance? - ✔✔A measure of the magnetic field coupling between
two pairs if a differential current is applied on one pair and a differential noise
current is measured on another pair in close proximity.
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 3
