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| Q 1: | Which insulating material commonly used as a thermal conductor for some types of electronic devices is extremely toxic if broken or crushed and the particles are accidentally inhaled? |
| | (E0A09) |
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| A. Mica. |
| B. Zinc oxide. |
| C. Beryllium Oxide. |
| D. Uranium Hexaflouride. |
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| Q 2: | What is the only amateur band where transmission on specific channels rather than a range of frequencies is permitted? |
| | (E1A07) |
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| A. 12 meter band. |
| B. 17 meter band. |
| C. 30 meter band. |
| D. 60 meter band. |
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| Q 3: | What is the Radio Amateur Civil Emergency Service (RACES)? |
| | (E1B09) |
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| A. A radio service using amateur service frequencies on a regular basis for communications that can reasonably be furnished through other radio services. |
| B. A radio service of amateur stations for civil defense communications during periods of local, regional, or national civil emergencies. |
| C. A radio service using amateur service frequencies for broadcasting to the public during periods of local, regional or national civil emergencies . |
| D. A radio service using local government frequencies by Amateur Radio operators for civil emergency communications. |
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| Q 4: | What is a remotely controlled station? |
| | (E1C01) |
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| A. A station operated away from its regular home location. |
| B. A station controlled by someone other than the licensee. |
| C. A station operating under automatic control. |
| D. A station controlled indirectly through a control link. |
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| Q 5: | What is an Earth station in the amateur satellite service? |
| | (E1D04) |
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| A. An amateur station within 50 km of the Earth's surface for communications with amateur stations by means of objects in space. |
| B. An amateur station that is not able to communicate using amateur satellites. |
| C. An amateur station that transmits telemetry consisting of measurement of upper atmosphere data from space. |
| D. Any amateur station on the surface of the Earth. |
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| Q 6: | Where are the questions for all written US amateur license examinations listed? |
| | (E1E02) |
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| A. In FCC Part 97. |
| B. In an FCC-maintained question pool. |
| C. In the VEC-maintained question pool. |
| D. In the appropriate FCC Report and Order. |
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| Q 7: | Under what circumstances might the FCC issue a "Special Temporary Authority" (STA) to an amateur station? |
| | (E1F17) |
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| A. To provide for experimental amateur communications. |
| B. To allow regular operation on Land Mobile channels . |
| C. To provide additional spectrum for personal use . |
| D. To provide temporary operation while awaiting normal licensing. |
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| Q 8: | What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation? |
| | (E2A11) |
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| A. A linearly polarized antenna. |
| B. A circularly polarized antenna. |
| C. An isotropic antenna. |
| D. A log-periodic dipole array. |
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| Q 9: | How are analog slow-scan television images typically transmitted on the HF bands? |
| | (E2B12) |
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| A. Video is converted to equivalent Baudot representation. |
| B. Video is converted to equivalent ASCII representation . |
| C. Varying tone frequencies representing the video are transmitted using FM . |
| D. Varying tone frequencies representing the video are transmitted using single sideband. |
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| Q 10: | In North America during low sunspot activity, when signals from Europe become weak and fluttery across an entire HF band two to three hours after sunset, what might help to contact other European DX stations? |
| | (E2C12) |
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| A. Switch to a higher frequency HF band. |
| B. Switch to a lower frequency HF band. |
| C. Wait 90 minutes or so for the signal degradation to pass. |
| D. Wait 24 hours before attempting another communication on the band. |
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| Q 11: | Which of the following data sources are needed to accurately transmit your geographical location over the APRS network? |
| | (E2D11) |
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| A. The NMEA-0183 formatted data from a Global Positioning System (GPS) satellite receiver. |
| B. The latitude and longitude of your location, preferably in degrees, minutes and seconds, entered into the APRS computer software. |
| C. The NMEA-0183 formatted data from a LORAN navigation system. |
| D. Any of these choices is correct. |
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| Q 12: | What do the letters FEC mean as they relate to digital operation? |
| | (E2E02) |
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| A. Forward Error Correction. |
| B. First Error Correction. |
| C. Fatal Error Correction. |
| D. Final Error Correction. |
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| Q 13: | What transmit and receive time sequencing is normally used on 432 MHz when attempting an EME contact? |
| | (E3A06) |
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| A. Two-minute sequences, where one station transmits for a full two minutes and then receives for the following two minutes. |
| B. One-minute sequences, where one station transmits for one minute and then receives for the following one minute. |
| C. Two-and-one-half minute sequences, where one station transmits for a full 2.5 minutes and then receives for the following 2.5 minutes. |
| D. Five-minute sequences, where one station transmits for five minutes and then receives for the following five minutes. |
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| Q 14: | At what time of day is gray-line propagation most prevalent? |
| | (E3B09) |
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| A. At sunrise and sunset. |
| B. When the sun is directly above the location of the transmitting station. |
| C. When the sun is directly overhead at the middle of the communications path between the two stations. |
| D. When the sun is directly above the location of the receiving station. |
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| Q 15: | What effect does auroral activity have on radio communications? |
| | (E3C01) |
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| A. Signals experience long-delay echo. |
| B. FM communications are clearer. |
| C. CW signals have a clearer tone. |
| D. CW signals have a fluttery tone. |
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| Q 16: | Which of the following test instruments is used to display intermodulation distortion products in an SSB transmission? |
| | (E4A05) |
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| A. A wattmeter. |
| B. A spectrum analyzer. |
| C. A logic analyzer. |
| D. A time-domain reflectometer. |
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| Q 17: | If a frequency counter with a specified accuracy of +/- 10 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading? |
| | (E4B06) |
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| A. 146.52 Hz. |
| B. 10 Hz. |
| C. 146.52 kHz. |
| D. 1465.20 Hz. |
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| Q 18: | What is the effect of excessive phase noise in the local oscillator section of a receiver? |
| | (E4C01) |
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| A. It limits the receiver ability to receive strong signals. |
| B. It reduces the receiver sensitivity. |
| C. It decreases the receiver third-order intermodulation distortion dynamic range. |
| D. It can cause strong signals on nearby frequencies to interfere with reception of weak signals. |
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| Q 19: | If a receiver tuned to 146.70 MHz receives an intermodulation-product signal whenever a nearby transmitter transmits on 146.52 MHz, what are the two most likely frequencies for the other interfering signal? |
| | (E4D05) |
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| A. 146.34 MHz and 146.61 MHz. |
| B. 146.88 MHz and 146.34 MHz. |
| C. 146.10 MHz and 147.30 MHz. |
| D. 73.35 MHz and 239.40 MHz. |
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| Q 20: | What is one type of electrical interference that might be caused by the operation of a nearby personal computer? |
| | (E4E14) |
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| A. A loud AC hum in the audio output of your station receiver . |
| B. A clicking noise at intervals of a few seconds. |
| C. The appearance of unstable modulated or unmodulated signals at specific frequencies. |
| D. A whining type noise that continually pulses off and on . |
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| Q 21: | What is the magnitude of the current at the input of a series R-L-C circuit as the frequency goes through resonance? |
| | (E5A05) |
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| A. Minimum. |
| B. Maximum. |
| C. R/L. |
| D. L/R. |
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| Q 22: | What is the relationship between the current through and the voltage across a capacitor? |
| | (E5B09) |
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| A. Voltage and current are in phase. |
| B. Voltage and current are 180 degrees out of phase. |
| C. Voltage leads current by 90 degrees. |
| D. Current leads voltage by 90 degrees. |
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| Q 23: | Which point in Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and an 18 microhenry inductor at 3.505 MHz? |
| | (E5C20) |
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| A. Point 1. |
| B. Point 3. |
| C. Point 7. |
| D. Point 8. |
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| Q 24: | What is the term for an out-of-phase, nonproductive power associated with inductors and capacitors? |
| | (E5D09) |
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| A. Effective power. |
| B. True power. |
| C. Peak envelope power. |
| D. Reactive power. |
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| Q 25: | What term indicates the frequency at which a transistor grounded base current gain has decreased to 0.7 of the gain obtainable at 1 kHz? |
| | (E6A08) |
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| A. Corner frequency. |
| B. Alpha rejection frequency. |
| C. Beta cutoff frequency. |
| D. Alpha cutoff frequency. |
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| Q 26: | How are junction diodes rated? |
| | (E6B12) |
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| A. Maximum forward current and capacitance. |
| B. Maximum reverse current and PIV. |
| C. Maximum reverse current and capacitance. |
| D. Maximum forward current and PIV. |
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| Q 27: | Which of the following is an advantage of CMOS logic devices over TTL devices? |
| | (E6C05) |
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| A. Differential output capability. |
| B. Lower distortion. |
| C. Immune to damage from static discharge. |
| D. Lower power consumption. |
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| Q 28: | What is one reason for using ferrite toroids rather than powdered-iron toroids in an inductor? |
| | (E6D18) |
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| A. Ferrite toroids generally have lower initial permeabilities. |
| B. Ferrite toroids generally have better temperature stability. |
| C. Ferrite toroids generally require fewer turns to produce a given inductance value. |
| D. Ferrite toroids are easier to use with surface mount technology. |
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| Q 29: | What is the most common package for inexpensive monolithic microwave integrated circuit (MMIC) amplifiers? |
| | (E6E13) |
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| A. Beryllium oxide packages. |
| B. Glass packages. |
| C. Plastic packages. |
| D. Ceramic packages. |
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| Q 30: | What happens to the conductivity of a photoconductive material when light shines on it? |
| | (E6F02) |
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| A. It increases. |
| B. It decreases. |
| C. It stays the same. |
| D. It becomes unstable. |
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| Q 31: | Which of the following is a circuit that continuously alternates between two unstable states without an external clock? |
| | (E7A05) |
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| A. Monostable multivibrator. |
| B. J-K Flip-Flop. |
| C. T Flip-Flop. |
| D. Astable Multivibrator. |
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| Q 32: | What is one way to prevent thermal runaway in a transistor amplifier? |
| | (E7B14) |
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| A. Neutralization. |
| B. Select transistors with high beta. |
| C. Use degenerative emitter feedback . |
| D. All of the above. |
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| Q 33: | Which of these modes is most affected by non-linear phase response in a receiver IF filter? |
| | (E7C14) |
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| A. Meteor Scatter. |
| B. Single-Sideband Voice. |
| C. Digital. |
| D. Video. |
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| Q 34: | What is the purpose of Q1 in the circuit shown in Figure E7-3? |
| | (E7D06) |
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| A. It provides negative feedback to improve regulation. |
| B. It provides a constant load for the voltage source. |
| C. It increases the current-handling capability of the regulator . |
| D. It provides D1 with current. |
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| Q 35: | What occurs when an excessive amount of signal energy reaches a mixer circuit? |
| | (E7E09) |
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| A. Spurious mixer products are generated. |
| B. Mixer blanking occurs. |
| C. Automatic limiting occurs. |
| D. A beat frequency is generated. |
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| Q 36: | What is the function of a decade counter digital IC? |
| | (E7F03) |
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| A. It produces one output pulse for every ten input pulses. |
| B. It decodes a decimal number for display on a seven-segment LED display. |
| C. It produces ten output pulses for every input pulse. |
| D. It adds two decimal numbers together. |
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| Q 37: | What voltage gain can be expected from the circuit in Figure E7-4 when R1 is 1800 ohms and RF is 68 kilohms? |
| | (E7G12) |
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| A. 1. |
| B. 0.03. |
| C. 38. |
| D. 76. |
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| Q 38: | Why is a phase-locked loop often used as part of a variable frequency synthesizer for receivers and transmitters? |
| | (E7H19) |
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| A. It generates FM sidebands. |
| B. It eliminates the need for a voltage controlled oscillator. |
| C. It makes it possible for a VFO to have the same degree of stability as a crystal oscillator. |
| D. It can be used to generate or demodulate SSB signals by quadrature phase synchronization. |
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| Q 39: | What determines the PEP-to-average power ratio of a single-sideband phone signal? |
| | (E8A07) |
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| A. The frequency of the modulating signal. |
| B. The characteristics of the modulating signal. |
| C. The degree of carrier suppression. |
| D. The amplifier gain. |
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| Q 40: | What is the modulation index of an FM-phone signal having a maximum frequency deviation of 3000 Hz either side of the carrier frequency, when the modulating frequency is 1000 Hz? |
| | (E8B03) |
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| A. 3. |
| B. 0.3. |
| C. 3000. |
| D. 1000. |
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| Q 41: | What are some of the differences between the Baudot digital code and ASCII? |
| | (E8C02) |
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| A. Baudot uses four data bits per character, ASCII uses seven; Baudot uses one character as a shift code, ASCII has no shift code. |
| B. Baudot uses five data bits per character, ASCII uses seven; Baudot uses two characters as shift codes, ASCII has no shift code. |
| C. Baudot uses six data bits per character, ASCII uses seven; Baudot has no shift code, ASCII uses two characters as shift codes. |
| D. Baudot uses seven data bits per character, ASCII uses eight; Baudot has no shift code, ASCII uses two characters as shift codes. |
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| Q 42: | What is the polarization of an electromagnetic wave if its magnetic field is perpendicular to the surface of the Earth? |
| | (E8D11) |
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| A. Horizontal. |
| B. Circular. |
| C. Elliptical. |
| D. Vertical. |
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| Q 43: | How much gain does an antenna have over a 1/2-wavelength dipole when it has 6 dB gain over an isotropic antenna? |
| | (E9A14) |
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| A. 3.85 dB. |
| B. 6.0 dB. |
| C. 8.15 dB. |
| D. 2.79 dB. |
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| Q 44: | What is the principle of a Method of Moments analysis? |
| | (E9B11) |
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| A. A wire is modeled as a series of segments, each having a distinct value of current. |
| B. A wire is modeled as a single sine-wave current generator. |
| C. A wire is modeled as a series of points, each having a distinct location in space. |
| D. A wire is modeled as a series of segments, each having a distinct value of voltage across it. |
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| Q 45: | What type of antenna pattern over real ground is shown in Figure E9-2? |
| | (E9C08) |
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| A. Elevation. |
| B. Azimuth. |
| C. Radiation resistance. |
| D. Polarization. |
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| Q 46: | Which of the following types of conductor would be best for minimizing losses in a station's RF ground system? |
| | (E9D14) |
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| A. A resistive wire, such as a spark-plug wire. |
| B. A thin, flat copper strap several inches wide. |
| C. A cable with 6 or 7 18-gauge conductors in parallel. |
| D. A single 12 or 10 gauge stainless steel wire. |
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| Q 47: | Which of the following measurements describes a mismatched transmission line? |
| | (E9E08) |
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| A. An SWR less than 1:1. |
| B. A reflection coefficient greater than 1. |
| C. A dielectric constant greater than 1. |
| D. An SWR greater than 1:1. |
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| Q 48: | Why is the physical length of a coaxial cable transmission line shorter than its electrical length? |
| | (E9F03) |
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| A. Skin effect is less pronounced in the coaxial cable. |
| B. The characteristic impedance is higher in a parallel feed line. |
| C. The surge impedance is higher in a parallel feed line. |
| D. Electrical signals move more slowly in a coaxial cable than in air. |
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| Q 49: | On the Smith chart shown in Figure E9-3, what is the only straight line shown? |
| | (E9G07) |
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| A. The reactance axis. |
| B. The current axis. |
| C. The voltage axis. |
| D. The resistance axis. |
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| Q 50: | How can the output voltage of a receiving loop antenna be increased? |
| | (E9H10) |
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| A. By reducing the permeability of the loop shield. |
| B. By increasing the number of wire turns in the loop and reducing the area of the loop structure. |
| C. By reducing either the number of wire turns in the loop or the area of the loop structure. |
| D. By increasing either the number of wire turns in the loop or the area of the loop structure. |
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