RCDD 13TH EDITION WITH 100% CORRECT ANSWERS.

Low Value This is the preferred value for Insulation resistance High Value This is the preferred value for Dissipation factor Low Value This is the preferred value for Dielectric Strength High Value This is the preferred value for Dielectric Constant Common Mode noise 2 separate distinct grounds is an example of this Reactive This is not a form of signal coupling signal coupling Conductive, Inductive, Capacitive, Electromagnetic These are example of Unbalanced circuit This is how a common mode (CM) signal can be converted to a differential mode (DM) signal Permittivity This is the conductors insulation ability to transmit an electric field Electrical Conductor Carry's a Charge Annealed Copper 100% Conductivity Alloy Adverse Affect on Copper BER Bit Error Rate Fractional Number of Errors Allowed Better Transmission Advantage of a solid conductor More Flexible Advantage of a Stranded conductor Dielectric Another Word for Insulation PVC What type of insulation is used inside a building PE What kind of insulation is used outside a building Electromagnetic Couplings Dielectrics can also reduce what? Teflon Trademark of Dupont FEP Trademark of Dykin Halar Trademark of Solvey Solexus Dielectric Strength This measures voltage or how much power insulation can handle Twisting of pairs counter clockwise every 1/2in This minimizes cross talk and decreases capacitance EMI Anytime radiating is mentioned they are referring to 68 Higher temperature attenuation happens at this degree Exterior walls, Ceilings and Mechanical Rooms In what locations in a building does it get above 68 degrees Foils and Braids Cable Shields are made of require no shields Do Conductive non metallic materials operating above 500 khz require a shield 20 dB poor 20-40 dB Fair 40-60 dB good above 60dB excellent list the tired effectiveness of a shield for poor, fair, good and excellent Not effective at all How effective is a braided shield against EMI effectiveness reduced When a shield is not properly grounded what happens longitudinally Drain wires are usually applied you select cables You select a drain wire when Wave An analog symbol closely resembles what shape sinusoid An analog symbol is an example of a 20-20,000 hrz Human hearing is around what hrz? 300-3400 hrz Frequency for voice circuits is around what hrz Time The word "phase" means Joseph Fourier Who developed the Sinusoid Theory 30dB If you have 1 Watt of power input and 1mw of power output how much is the dB loss? Echo When sound reflects back its called 600 ohms and 22 awg wire How many ohms and on what size wire do residential circuits run? 900 ohms and 26 awg wire How many ohms and on what size wire do neighborhood/central office circuits run? 186,000 mi/s what is the speed of light .56c - .74c how much is the speed of light attenuated in a cable? 1/4s or .25s what is the round trip delay of satellite signals @ 4,495' use D Loading @ 6,004' use H loading what are the 2 common distances for loading points Bridges What ISNT a power source for VOIP Digital Signals What type of signal changes from 1 step to another in discreet steps? A/D Conversion Analog to digital conversion is done through Companding What is the 4th process in converting analog to digital signals Harry Nyquist Who created the Sampling theory MU LAW - US/Canada/Japan A - Europe What are the 2 types of companding 256 Within Pulse Code Modulation how many levels are there? AMI and Manchester The 2 common modes of encoding are Modems BAUD, which describes the rate at which signals change is related to what? Integrated Services Digital Network ISDN Stands for what?