Components Of Input Current Quiz

A) That varies in magnitude but never changes direction.

B) That changes direction but never varies in magnitude.

C) That never chages direction or magnitude

D) That changes direction (or alternates) in the conductor each time the potential difference applied to the ends of the conductor changes (or alternates) its polarity.

E) In a circuit with a potential difference that never changes polarity.

A) The higher the temperature, the lesser the cable signal attenuation

B) Temperature has no affect on cable signal attenuation.

C) The higher the temperature, the greater the cable signal attenuation.

A) Is 1:2 or 1/2, the secondary coil voltage is one half the primary coil voltage.

B) Is 2:1 or 2/1, the secondary coil voltage is twice the primary coil current.

C) Is 1:1 or 1/1, the voltage is the same in the primary and secondary coils, but the secondary coil current is always larger than the primary coil current.

D) Is 1:2 or 1/2, the secondary coil voltage is two times larger than the primary coil voltage.

E) Is less than one, the voltages and currents in the primary and secondary coils are equal.

A) 20 µV/m

B) 80 µV/m

C) 50 µV/m

After a foam dielectric cable is properly cored and stripped, the cable's center conductor should be A) Prepared with a rounded tip.

B) Lubricated to prevent it from getting hung up when installing the connector.

C) Coated with an adhesive to hold the connector in place.

D) Filed to remove any sharp edges or burrs.

E) Prepared with a pyramid-shaped cut to the tip.

A) Line extenders powered by the cable system can pass current to other devices.

B) The components of a linear power supply are smaller than the comparable components in a switching-mode power supply (SMPs).

C) MDU applications are usually powered by the cable system.

A) Slope.

B) Negative tilt.

C) Positive tilt.

A) Velocity of propagation.

B) Signal pulse width.

C) Cable radar.

A) The threaded mounting tap, seizure screw mechanisms, and right-angled input and output ports.

B) Tap ports, electronic circuit board, and radio frequency interference (RFI) gasket.

C) Output ports, input ports, and tap ports.

D) Strip gauge, cover bolts, and splitter network.

E) Plastic component cover, input port male or female interconnect pins, and low-pass coil.

A) The seizure screw mechanism.

B) The Fast Transfer Electronic Crowbar (FTEC).

C) The plug-in jumper.

A) Identify an individual leak from all other leaks.

B) Assure a leak is coming from the cable system being tested.

C) Prioritize leaks.

D) Tag a leak so it is easier to find the next time.

A) Is the sum of all the random magnetic fields associated with a conductor's free electrons.

B) Occurs in a conductor only when the current of an applied voltage is constant, or zero.

C) Is also known as electromagnetic field (emf).

D) Is the production of an emf in a conductor by changes in the magnetic field around the conductor.

E) In a conductor occurs when there is no magnetic field surrounding it.

A) ≥ 32 dB.

B) ≥ 26 dB.C) ≥ 36 dB.

D) ≤ 28 dB.

A) Ipconfig.

B) Trace route.

C) Throughput.

D) Ping.

A) 0.83 amperes.

B) 12.00 amperes

C) 10.00 amperes.

D) 1.20 amperes.

E) 22.00 amperes.

A) They have similar Ohm's law and power relationships, with certain exceptions.

B) Both types of circuits have eddy currents.

C) Both types of circuits have skin-effect losses.

D) The voltage continuously changes in both types of circuits

E) The magnitude of current is constant in both types of circuits.

To connect a coaxial cable to a 750 MHz amplifier, use a A) Three-piece or two-piece pin connector.

B) Feed-thru connector.

C) Three- or five-piece straight splice connector.

D) Housing-to-housing adapter.

E) Cable terminator.

A) 1.11.

B) 110.

C) 7.5.

D) 60.4.

A) An ohmmeter.

B) A clamp-on ammeter.

C) A digital multimeter (DMM).

D) A true RMS DMM.

A) Capacitance, voltage, and inductance.

B) Resistance, inductance, and capacitance.

C) Inductance, resistance, and voltage.

D) Resistance, current, and capacitance.

A) The capacitor allows the flow of current in a capacitive DC circuit.

B) The applied voltage is zero and the capacitor voltage is zero, in a capacitive AC circuit

C) The source voltage reaches its minimum value.

D) Both the applied voltage and the charging current stop changing values for an indefinite but significant period of time, in a capacitive AC circuit.

E) The source current then reverses directions and flows back through the source, in a capacitive AC circuit.

B) Minimize the cable length between the power supply and the power inserter to maximize AC voltage loss.

C) Power inserters remove a small portion of the main RF trunk signal and supply it to the subtrunk cable, or from one feeder cable to another cable.

D) A power inserter's internal circuitry passes forward RF signals on one RF/AC port and reverse RF signals on the other port while combining 24 DCV onto one or both of its RF/AC ports.

E) For each power inserter, the system design must ensure that: (1) the current required by any one RF/AC port does not exceed that port's power-passing specification; and (2) the current required by both RF/AC ports does not exceed the AC input port power-passing specification.

A) Can be a fairly good conductor under certain conditions and yet function as a rather good insulator under a different set of conditions.

B) Always offers little opposition to current flow.

C) Is somewhat unsuitable for use in devices that can control the flow of current through a circuit and amplify electrical signals.

D) Uses fragile, bulky, and power-gobbling vacuum tubes.

E) Always offers a great deal of opposition to current flow.

A) Can never equal inductive reactance in an AC circuit that has both an inductor and a capacitor.

B) Decreases when the frequency decreases, in a capacitive AC circuit.

C) In a capacitive AC circuit is equal to 2 times pi times the frequency of the applied AC source voltage in hertz times the circuit inductance in henrys.

D) Is the opposition to current flow in an AC circuit caused by a capacitor.

E) Is considered negligible in all completely capacitive circuits.

A) Frequency.

B) Amplitude.

C) Cycle.

D) Wavelength.

A) The magnitude of the current flowing through the diode with positive voltage is exactly the same as the magnitude of the current flowing through the diode with negative voltage across the diode.

B) Depending on the type of diode utilized, once the voltage across the diode reaches a certain level, the diode begins to conduct.

C) The P-type material in the diode is called the cathode, and the N-type material is called the anode.

D) A nonlinear relationship exists between the voltage dropped across the resistor and the current flowing through the resistor.

E) A negative voltage dropped across the resistor results in a greater amount of current flowing through the resistor as a positive voltage dropped across the resistor.

A) With the chemicals.

B) In the truck.

C) Where employees have access to them.

A) Signal distortion.

B) Signal slope.

C) Signal noise.

A) 5.056941 megasymbols per second (MS/s).

B) 5.360537megasymbols per second (MS/s).

C) 5.12 megasymbols per second (MS/s).

D) 6.952 megasymbols per second (MS/s).

A) Fiber-to-the-node (FTTN).

B) Fiber-to-the-home (FTTH).

C) Fiber-to-the-curb (FTTC).

A) Resistive type.

B) High-gain type.

C) Directional coupler type.

A) Electrolytic capacitors.

B) Oil-filled capacitors.

C) Trimmer capacitors.

D) Paper capacitors.

E) Padder capacitors.

A) To prevent the 60 VAC or 90 VAC from passing between the two RF/AC ports.

B) To pass the 60 VAC or 90 VAC through the network.

C) To prevent RF signals from transmitting through the power supply.

D) To prevent the RF signals from transmitting through the power supply.

A) Is typically bonded to the dielectric with a polymer adhesive coating or center conductor treatment to inhibit moisture migration and corrosion.

B) Causes one-third of the total cable attenuation.

The center conductor of trunk and feeder coaxial cable A) Is typically bonded to the dielectric with a polymer adhesive coating or center conductor treatment to inhibit moisture migration and corrosion. B) Causes one-third of the total cable attenuation. C) Size has no effect on the cable attenuation.

E) When made of solid copper is lighter and has a higher DC resistance than a center conductor made from copper-clad aluminum.

A) Has a specified tap port insertion loss but the output insertion loss is not specified

B) Has a directional coupler portion that efficiently routes most of the signal to the output port while removing a small amount of the signal and passing it to the splitter network.

C) Has a circuit board with a low-pass coil that blocks the 60 Hz AC voltage directly between the input port and the output port, while passing the higher frequency RF signals.

D) Does not have an output port interconnect pin because it does not pass any signals to the output port.

E) RF signal level at the output port is determined by the tap's isolation.

A) Three-way splitters have one input port and two output ports.

B) Two-way splitters can be set up to direct 60/90 VAC to either or both output ports for powering trunk/bridger, minibridger, distribution, system, or line extender amplifiers.

C) All hardline RF splitters have "keyed"faceplates to ensure correct installation.

D) Jumper wires should never be replaced with fuses for distributing AC voltage.

E) Power loss in a three-way balanced splitter is less than a two-way splitter.

A) 100 amps and 1,000 volts.

B) 4 amps and 25,000 volts.

C) 50 amps and 2,000 volts.

D) 2 amps and 50,000 volts.

E) 25 amps and 4,000 volts.

A) Connected in series is equal to the sum of the individual capacitances.

B) Connected in parallel is the same as the total capacitance of the same capacitors connected in series.

C) Connected in parallel is always smaller than the largest capacitor value.

D) Connected in series is always smaller than the smallest capacitor value.

E) Connected in parallel is always smaller than the smallest capacitor value.

A) Has relatively high barrier potential, yet electrons can be forced to "tunnel"through the thin depletion region.

B) Exhibits negative resistance effects that are of little use in high frequency oscillator circuits.

C) Is sometimes used as an electric switch, with the key feature in this application being its low switching speed and high power consumption.

D) Exhibits the negative-resistance region of its I-V curve, where an increase in forward voltage actually causes an increase in forward current.

E) Is manufactured with a high proportion of doping material and an especially thick depletion region.

A) The ratio of the maximum value to the minimum value of alternating RMS voltage of the RF signal on the cable.

B) The larger the ratio value in dB, the larger the amount of reflected signal voltage.

C) Is the amount of damaged cable on a reel to be sent back to the factory.

D) The term given when the coaxial cable's physical structure has changed.

E) The difference in dB between the signal power applied to a terminated cable and the reflected signal power.

A) Start with the default pulse width.

B) Start with the shortest pulse width.

C) Start with the widest pulse width.

A) Per second is the same as one kilohertz

B) Is equal to one complete rotation of the armature of an AC generator.

C) Is one-half of a sine wave

D) Is two positive alternations of any AC .waveform

E) Per second is the same as 360 hertz

A) The drive-off method

B) The pull-in method.

C) The figure-eight tension method.

A) Divides the trunk or feeder cable signal into two equal voltage and power output signals.

B) Should be installed on a trunk or subtrunk cable either immediately at the output of the trunk amplifier, or at least three spans away, to minimize undesired reflections.

C) Passes the desired frequencies, combines the RF signals and AC voltages, and directs RF/AC signals to certain ports with minimum efficiency.

D) Has different housings and radio frequency interference(RFI) and environmental gaskets than a splitter.

E) Can pass AC voltage to the input port only.

A) If recorded digitally, must show that the 75th percentile level of points recorded over a cable system do not exceed 20 uV/m root mean square (RMS).

B) Both require the use of a handheld dipole antenna.

C) Utilize different types of receivers and antennas, but both methods test signals operating in the VHF aeronautical band (108-137 MHz).

D) Both require measurements be taken in the 225-400 MHz frequency band.

A) Always measure leakage in microvolts per meter.

B) Use a dipole antenna to take accurate measurements for cumulative leakage index (CLI) calculations.

C) Can only measure leakage in dBmV.

D) Provide leakage measurements in the required 137-225 MHz frequency band.

A) The instantaneous value of an AC waveform may range from the least positive value to the average negative value.

B) An AC waveform contains only three instantaneous values because the sine wave crosses the horizontal (time) axis only three times.

C) The instantaneous value is the value of a single point on the AC waveform at a specific moment, or instant, of time.

D) The instantaneous value is another name for the effective value of an AC waveform.

E) The instantaneous value is an AC waveform is never used in the communications field for circuit analysis.

Systems commonly use two-way taps in high-density areas where you can access four or more homes at a location on the feeder cable.

The system design maps specify the number of tap ports, but not the tap value, and not the type of tap (feed-through or terminating) for each installed tap.

Lower value taps never can show up close to a node or amplifier.

Systems commonly use eight-way taps in areas where you can access only one or two homes at a location on the feeder cable.

In general, the closer the tap is to the amplifier output port, the higher the tap value In general, the closer the tap is to the amplifier output port, the higher the tap value