BICSI INSTALLER 1 QUESTIONS AND
ANSWERS WITH VERIFIED SOLUTIONS
100% CORRECT!!! {GRADED A+}
Most effective and efficient transfer of a signal occurs at... - ANSWER✔✔interfaces and connection points where all components share same/similar characteristics
With any copper cabling medium, a sufficient level of signal must be coupled through th... - ANSWER✔✔medium from the transmitter to the receiver to drive to the receiver
Resistance - ANSWER✔✔property of a conductor to resist the flow of electricity through it
Why is copper the preferred conductor? - ANSWER✔✔Offers low resistance to the flow of electrical energy
Inductance - ANSWER✔✔property of a conductor carrying ac or dc current to oppose any change in current flow due to it's electromagnetic field
With DC, the electromagnetic field is... - ANSWER✔✔steady
with AC, what happens to the electromagnetic field? - ANSWER✔✔causes lines of forces to build and collapse constantly, resulting in energy loss
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inductive coupling - ANSWER✔✔the transfer of energy from one circuit to another (power lines on a utility pole can inductively couple a power surge onto telephone cables)
capacitance - ANSWER✔✔property of conductors that allows storage of electrical charges when potential differences exist between the inductors
What happens when two wires are seperated by insulation or a dielectric? - ANSWER✔✔capacitiance causes a voltage difference
capacitance in cable must be... - ANSWER✔✔minimized
Capacitance may be affected by - ANSWER✔✔improper cable installation
changes in capacitance and inductance may... - ANSWER✔✔degrade the quality of the signal through the cable because they are key elements of a cables impedance
mutual capacitance - ANSWER✔✔capacitance between 2 conductors
unbalanced capacitance - ANSWER✔✔capacitance between 2 conductors and ground
in multi-conductor cables, 2 capacitance factors are observed... - ANSWER✔✔mutual capacitance and unbalanced capacitance
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