Programmer 7500/MAX_PROGRAMMERS.iso/PROGRAMS/UTILS/HAMRADIO/HAMBONE.ZIP/TECH2.QST

Text File | 1990-09-15 | 36.9 KB | 1,337 lines

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    █ ▀▀▀ ██ ▀▀▀ ██ █ █ █            TECHNICIAN CLASS
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    ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀          TEST QUESTION LIBRARY
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     .   */..................................................
     .   To edit, add or delete questions with a text editor.
     .   follow the EXACT formula as shown.                 .
     .                                                      .
     .   ! + n = question #                                 .
     .   # = ANSWER                                         .
     .   % = END OF CLASS QUESTIONS                         .
     .   @ = CLASS OF LICENSE                               .
     .                                                      .
     .   Keep answers short enough to fit in the HAMBONE    .
     .   window screen.                                     .
     .   */..................................................

!152: What station accessory is used in place of an antenna during
      transmitter tests so that no signal is radiated?

 A. A Transmatch.
 B. A dummy antenna.
 C. A low-pass filter.
 D. A decoupling resistor.
#ANSWER:B
@TECH

!153: What is the purpose of a DUMMY ANTENNA?

 A. To allow off-the-air transmitter testing.
 B. To reduce output power for QRP operation.
 C. To give comparative signal reports.
 D. To allow Transmatch tuning without causing interference.
#ANSWER:A
@TECH

!154: How many Watts  should a dummy load for use with a 100 Watt
      emission J3E transmitter with 50 ohm output be able to
      dissipate?

 A. A minimum of 100 watts continuous.
 B. A minimum of 141 watts continuous.
 C. A minimum of 175 watts continuous.
 D. A minimum of 200 watts continuous.
#ANSWER:A
@TECH

!155: What is an S-METER?

 A. A meter used to measure sideband suppression.
 B. A meter used to measure spurious emissions from a transmitter.
 C. A meter used to measure relative signal strength in a receiver.
 D. A meter used to measure solar flux.
#ANSWER:C
@TECH

!156: For the most accurate readings of a transmitter output power,
      where should the RF Wattmeter be inserted?

 A. The wattmeter should be inserted and the output measured
    one-quarter wavelength from the antenna feedpoint.
 B. The wattmeter should be inserted and the output measured
    one-half wavelength from the antenna feedpoint.
 C. The wattmeter should be inserted and the output power
    measured at the transmitter antenna jack.
 D. The wattmeter should be inserted and the output power
    measured at the Transmatch output.
#ANSWER:C
@TECH

!157: At what impedance are RF Wattmeters usually designed to operate?

 A.  25 Ohms.
 B.  50 Ohms.
 C. 100 Ohms.
 D. 300 Ohms.
#ANSWER:B
@TECH

!158: What is a DIRECTIONAL WATTMETER?

 A. An instrument that measures forward or reflected power.
 B. An instrument that measures the directional pattern of an antenna.
 C. An instrument that measures the energy consumed by the transmitter.
 D. An instrument that measures thermal heating in a load resistor.
#ANSWER:A
@TECH

!159: What is meant by the term RESISTANCE?

 A. The opposition to the flow of current in an electrical circuit
    containing inductance.
 B. The opposition to the flow of current in an electrical circuit
    containing capacitance.
 C. The opposition to the flow of current in an electrical circuit
    containing reactance.
 D. The opposition to the flow of current in an electrical circuit
    that does not contain reactance.
#ANSWER:D
@TECH

!160: What is the primary function of a Resistor?

 A. To store an electric charge.
 B. To store a magnetic field.
 C. To match a high impedance source to a low impedance load.
 D. To limit the current in an electric circuit.
#ANSWER:D
@TECH

!161: What is a VARIABLE RESISTOR?

 A. A Resistor with a slide contact that makes the resistance adjustable
 B. A device that can transform a variable voltage into a constant voltage.
 C. A Resistor that changes value when an AC voltage is applied to it.
 D. A Resistor that changes value when heated.
#ANSWER:A
@TECH

!162: Why do Resistors generate heat?

 A. They convert electrical energy into heat energy.
 B. They exhibit reactance.
 C. Because of skin effect.
 D. To produce thermionic emission.
#ANSWER:A
@TECH

!163: What is an INDUCTOR?

 A. An electronic component that stores energy in an electric field.
 B. An electronic component that converts a high voltage to a lower voltage.
 C. An electronic component that opposes dc while allowing AC to pass.
 D. An electronic component that stores energy in a magnetic field.
#ANSWER:D
@TECH

!164: What factors determine the amount of Inductance in a coil?

 A. The type of material used in the core, the diameter of the core, and
    whether the coil is mounted horizontal or vertical.
 B. The diameter of the core, the number of of turns of wire used used to
    wind the core and the type of metal used in the wire.
 C. The type of material used in the core, the number of turns used to wind
    the coil, and the frequency of the current through the coil.
 D. The type of material used in the core, the diameter of the core, the
    length of the coil, and the number of turns used to wind the coil.
#ANSWER:D
@TECH

!165: What are the electrical properties of an Inductor.

 A. An Inductor stores a charge electrostatically, and opposes a change
    in voltage.
 B. An Inductor stores a charge electrochemically, and opposes a change
    in current.
 C. An Inductor stores a charge electromagnetically, and opposes a change
    in current.
 D. An Inductor stores a charge electromechanically, and opposes a change
    in voltage.
#ANSWER:C
@TECH

!166: What is an Inductor CORE?

 A. The central portion of a coil; it may be made from air, iron, brass,
    or other material.
 B. A tight coil of wire used in a transformer.
 C. The insulating material placed between the plates of an Inductor.
 D. The point at which an Inductor is tapped to produce resonance.
#ANSWER:A
@TECH

!167: What are the component parts of a coil?

 A. The wire in the winding and the core material.
 B. The conductive plates and the insulating material.
 C. Two or more layers of silicon material.
 D. A donut shaped iron core and a layer of insulating tape.
#ANSWER:A
@TECH

!168: What is a CAPACITOR.

 A. An electronic component that stores energy in an magnetic field.
 B. An electronic component that stores energy in an electric field.
 C. An electronic component that converts a high voltage to a lower voltage.
 D. An electronic component that converts power into heat.
#ANSWER:B
@TECH

!169: What factors determine the amount of capacitance in a Capacitor?

 A. The dielectric constant of the material between the plates, the area of
    one side of one plate, the separation between the plates and the number
    of plates.
 B. The dielectric constant of the material between the plates, the number of
    plates, and the diameter of the leads connected to the plates
 C. The number of plates, the spacing between the plates and whether the
    material is N type or P type.
 D. The dielectric constant of the material between the plates, the area of
    one side of one plate, the number of plates and the type of material used
    for the protective coating.
#ANSWER:A
@TECH

!170: What are the electrical properties of a Capacitor?

 A. A Capacitor stores a charge electrochemically, and opposes
    a change in current.
 B. A Capacitor stores a charge electromagnetically, and opposes
    a change in current.
 C. A Capacitor stores a charge electromechanically, and opposes
    a change in voltage.
 D. A Capacitor stores a charge electrostatically, and opposes
    a change in voltage.
#ANSWER:D
@TECH

!171: What is a Capacitor DIELECTRIC?

 A. The insulating material used for the plates.
 B. The conducting material used between the plates.
 C. The Ferrite material that he plates are mounted on.
 D. The insulating material between the plates.
#ANSWER:D
@TECH

!172: What are the component parts of a Capacitor?

 A. Two or more conducting plates with an insulating material between them.
 B. The wire used in the winding and the core material.
 C. Two or more layers of silicon material.
 D. Two insulating plates with a conductive material between them.
#ANSWER:A
@TECH

!173: What is an OHM?

 A. The basic unit of resistance.
 B. The basic unit of capacitance.
 C. The basic unit of inductance.
 D. The basic unit of admittance.
#ANSWER:A
@TECH

!174: What is the unit measurement of Resistance?

 A. Volt.
 B. Ampere.
 C. Joule.
 D. Ohm.
#ANSWER:D
@TECH

!175: What is a MICROFARAD?

 A. A basic unit of capacitance equal to 10^(-6)Farads.
 B. A basic unit of capacitance equal to 10^(-12) Farads.
 C. A basic unit of capacitance equal to 10^(-2) Farads.
 D. A basic unit of capacitance equal to 10^(+6) Farads.
#ANSWER:A
@TECH

!176: What is a PICOFARAD?

 A. A basic unit of capacitance equal to 10^(-6) Farads.
 B. A basic unit of capacitance equal to 10^(-12) Farads.
 C. A basic unit of capacitance equal to 10^(-2) Farads.
 D. A basic unit of capacitance equal to 10^(+6) Farads.
#ANSWER:B
@TECH

!177: What is a FARAD?

 A. A basic unit of resistance.
 B. A basic unit of capacitance.
 C. A basic unit of inductance.
 D. A basic unit of admittance.
#ANSWER:B
@TECH

!178: What is the basic unit of Capacitance?

 A. Farad.
 B. Ohm.
 C. Volt.
 D. Ampere.
#ANSWER:A
@TECH

!179: What is a MICROHENRY?

 A. A basic unit of inductance equal to 10^(-12) Henrys.
 B. A basic unit of inductance equal to 10^(-3) Henrys.
 C. A basic unit of inductance equal to 10^(+6) Henrys.
 D. A basic unit of inductance equal to 10^(-6) Henrys.
#ANSWER:D
@TECH

!180: What is a MILIHENRY?

 A. A basic unit of inductance equal to 10^(-6) Henrys.
 B. A basic unit of inductance equal to 10^(-12) Henrys.
 C. A basic unit of inductance equal to 10^(-3) Henrys.
 D. A basic unit of inductance equal to 10^(+6) Henrys.
#ANSWER:C
@TECH

!181: What is a HENRY?

 A. A basic unit of resistance.
 B. A basic unit of capacitance.
 C. A basic unit of inductance.
 D. A basic unit of admittance.
#ANSWER:C
@TECH

!182: What is the basic unit of Inductance?

 A. Coulomb.
 B. Farad
 C. Ohm.
 D. Henry.
#ANSWER:D
@TECH

!183: How is the current in a DC circuit calculated when the voltage
      and resistance are known?

 A. I = E / R.
 B. P = I x E.
 C. I = R x E.
 D. I = E x R.
#ANSWER:A
@TECH

!184: What is the input resistance of a load when a 12 volt battery
      supplies 0.25 amperes to it?

 A. 0.02 ohms.
 B. 3 ohms.
 C. 48 ohms.
 D. 480 ohms.
#ANSWER:C
@TECH

!185: The product of the current and what force gives the electrical
      power in a circuit?

 A. Magnetomotive force.
 B. Centripetal force.
 C. Electrochemical force.
 D. Electromotive force.
#ANSWER:D
@TECH

!186: What is OHM'S LAW?

 A. A mathmatical relationship between resistance, current and
    applied voltage in a circuit.
 B. A mathmatical relationship between current, resistance and
    power in a circuit.
 C. A mathmatical relationship between current, voltage and
    power in a circuit.
 D. A mathmatical relationship between resistance, voltage and
    power in a circuit.
#ANSWER:A
@TECH

!187: What is the input resistance of a load when a 12 volt battery
      supplies 0.15 amperes to it?

 A.   8 Ohms.
 B.  80 Ohms.
 C. 100 Ohms.
 D. 800 Ohms.
#ANSWER:B
@TECH

!188: In a series circuit composed of a voltage source and several
      Resistors, what determines the voltage drop across any
      particular Resistor?

 A. It is equal to the source voltage.
 B. It is equal to the source voltage divided by the number of
    series Resistors in the circuit.
 C. The larger the Resistors value, the greater the voltage
    drop across that Resistor.
 D. The smaller the Resistors value, the greater the voltage
    drop across that Resistor.
#ANSWER:C
@TECH

!189: How is power calculated when the current and voltage in a
      circuit are known?

 A. E = I x R.
 B. P = I x E.
 C. P = I^2 / R.
 D. P = E / I.
#ANSWER:B
@TECH

!190: When 120 Volts is measured across a 4700 Ohm Resistor, how
      much current is flowing through it?

 A. 39 Amperes.
 B. 3.9 Amperes
 C. 0.26 Amperes.
 D. 0.026 Amperes
#ANSWER:D
@TECH

!191: When 120 Volts is measured across a 47000 Ohm Resistor, how
      much current is flowing through it?

 A. 392 A.
 B. 39.2 A.
 C. 26 mA.
 D. 2.6 mA.
#ANSWER:D
@TECH

!192: When 12 Volts is measured across a 4700 Ohm Resistor,
      approximately how much current is flowing through it?

 A. 2.6 mA.
 B. 26 mA.
 C. 39.3 A.
 D. 392 A.
#ANSWER:A
@TECH

!193: When 12 Volts is measured across a 4700 Ohm Resistor,
      approximately how much current is flowing through it?

 A. 255 uA.
 B. 255 mA.
 C. 3917 mA.
 D. 3917 A.
#ANSWER:A
@TECH

!194: How can a carbon resistor's electrical tolerance rating
      be found?

 A. By using a wavemeter.
 B. By using the resistor's color code.
 C. By using Thevenin's theorem for resistors.
 D. By using the Baudot code.
#ANSWER:B
@TECH

!195: Why would a large size resistor be substituted for a smaller
      one of the same resistance?

 A. To obtain better response.
 B. To obtain a higher current gain.
 C. To increase power dissipation capability.
 D. To produce a greater parallel impedance.
#ANSWER:C
@TECH

!196: What do the first three color bands on a resistor indicate?

 A. The value of the resistor in Ohms.
 B. The resistance tolerance in Percent.
 C. The power rating in Watts.
 D. The value of the resistor in Henrys.
#ANSWER:A
@TECH

!197: What does the does the forth color band on a resistor indicate?

 A. The value of the resistor in Ohms.
 B. The resistance tolerance in Percent.
 C. The power rating in Watts.
 D. The resistor composition.
#ANSWER:B
@TECH

!198: If the color bands on a group of resistors indicate that they all
      have the same resistance, what further information about each
      resistor is needed to select those that have nearly equal value?

 A. The working voltage rating of each resistor.
 B. The composition of each resistor.
 C. The tolerance of each resistor.
 D. The current rating of each resistor.
#ANSWER:C
@TECH

!199: As the plate area of a capacitor increases, what happens to its
      capacitance?

 A. Decreases.
 B. Increases.
 C. Stays the same.
 D. Becomes voltage dependent.
#ANSWER:B
@TECH

!200: As the plate spacing of a capacitor increases, what happens to
      its capacitance?

 A. Increases.
 B. Stays the same.
 C. Becomes voltage dependent.
 D. Decreases.
#ANSWER:D
@TECH

!201: What is an ELECTROLYTIC CAPACITOR?

 A. A capacitor whose plates are formed on a thin ceramic layer.
 B. A capacitor whose plates are separated by a thin strip of
    Mica insulation.
 C. A capacitor whose dielectric is formed on one set of plate through
    electrochemical action.
 D. A capacitor whose value varies with applied voltage.
#ANSWER:C
@TECH

!202: What is a PAPER CAPACITOR?

 A. A capacitor whose plates are formed on a thin ceramic layer.
 B. A capacitor whose plates are separated by a thin strip of Mica
    insulation.
 C. A capacitor whose plates are separated by a layer of paper.
 D. A capacitor whose dielectric is formed on one set of plate through
    electrochemical action.
#ANSWER:C
@TECH

!203: What factors must be considered when selecting a capacitor for a
      circuit?

 A. Type of capacitor, capacitance and voltage rating.
 B. Type of capacitor, capacitance and the Kilowatt-Hour rating.
 C. The amount of capacitance, the temperature coefficient and the
    KVA rating.
 D. The type of capacitor, the microscopy coefficient and the
    temperature coefficient.
#ANSWER:A
@TECH

!204: How are the characteristics of a capacitor usually specified?

 A. In Volts and Amperes.
 B. In Microfarads and Volts.
 C. In Ohms and Watts.
 D. In Milihenrys and Amperes.
#ANSWER:B
@TECH

!205: What can be done to raise the inductance of a 5 Microhenry Air
      Core coil to a 5 Milihenry coil of the same physical dimensions.

 A. The coil must be wound on a non-conducting tube.
 B. The coil must be wound on an iron core.
 C. Both ends of the coil must be brought around to form the shape
    of a doughnut, or torpid.
 D. The coil must be made of a heavier-gauge wire.
#ANSWER:B
@TECH

!206: Describe an INDUCTOR.

 A. A semiconductor in a conducting shield.
 B. Two parallel conducting plates.
 C. A straight wire conductor mounted inside a Faraday shield.
 D. A coil of conducting wire.
#ANSWER:D
@TECH

!207: As an Iron core is inserted in a coil, what happens to
      its inductance?

 A. It increases.
 B. It decreases.
 C. It stays the same.
 D. It becomes voltage-dependent.
#ANSWER:A
@TECH

!208: As a Brass core is inserted in a coil, what happens to
      its inductance?

 A. It increases.
 B. It decreases.
 C. It stays the same.
 D. It becomes voltage-dependent.
#ANSWER:B
@TECH

!209: For radio frequency power applications, which type of
      Inductor has the least amount of loss?

 A. Magnetic wire.
 B. Iron core.
 C. Air-core.
 D. Slug-tuned.
#ANSWER:C
@TECH

!210: Where does an Inductor store energy?

 A. In a capacitive field.
 B. In a magnetic field.
 C. In an electrical field.
 D. In a resistive field.
#ANSWER:B
@TECH

!211: What is a HEAT SINK?

 A. A device used to heat an electrical component uniformly.
 B. A device used to remove heat from an electronic component.
 C. A tub in which circuit boards are soldered.
 D. A fan used for transmitter cooling.
#ANSWER:B
@TECH

!212: What is a High Pass Filter usually connected to?

 A. The Transmitter and the Transmatch.
 B. The Transmatch and the Transmission line.
 C. The Television receiving antenna and a Television receiver's
    antenna input.
 D. The Transmission line and the Transmitting Antenna.
#ANSWER:C
@TECH

!213: Where is the proper place to install a High Pass Filter?

 A. At the antenna terminals of a Television Receiver.
 B. Between a Transmitter and a Transmatch.
 C. Between a Transmatch and the Transmission line.
 D. On a Transmitting Antenna.
#ANSWER:A
@TECH

!214: Where is a Band Pass Filter usually installed?

 A. Between the spark plugs and coil in a mobile setup.
 B. On a Transmitting Antenna.
 C. In a Communications Receiver.
 D. Between a Transmatch and the Transmitting Antenna.
#ANSWER:C
@TECH

!215: Which frequencies are attenuated by a Low Pass Filter?

 A. Those above its Cut Off Frequency.
 B. Those within its Cut Off Frequency.
 C. Within 50 kHz on either side of its Cut Off Frequency.
 D. Those below its Cut Off Frequency.
#ANSWER:A
@TECH

!216: What circuit passes electrical energy above a certain frequency
      and attenuates electrical energy below that frequency?

 A. An Input Filter.
 B. A Low Pass Filter.
 C. A High Pass Filter.
 D. A Band Pass Filter.
#ANSWER:C
@TECH

!217: What circuit passes electrical energy below a certain frequency
      and attenuates electrical energy above that frequency?

 A. An Input Filter.
 B. A Low Pass Filter.
 C. A High Pass Filter.
 D. A Band Pass Filter.
#ANSWER:B
@TECH

!218: What circuit attenuates electrical energy above a certain frequency
      and below a lower frequency?

 A. An Input Filter.
 B. A Low Pass Filter.
 C. A High Pass Filter.
 D. A Band Pass Filter.
#ANSWER:D
@TECH

!219: What general range of RF energy does a Band Pass Filter reject?

 A. All frequencies above a specified frequency.
 B. All frequencies below a specified frequency.
 C. All frequencies above the upper limit of the band in question.
 D. All frequencies above a specified frequency and below a lower
    specified frequency.
#ANSWER:D
@TECH

!220: What circuit is likely to be found in all types of receivers?

 A. A Detector.
 B. An RF Amplifier.
 C. An Audio Filter.
 D. A Beat Frequency Oscillator.
#ANSWER:A
@TECH

!221: In a Filter Type emission J3E transmitter, what stage combines
      RF and AF energy to produce a Double Sideband Suppressed Carrier
      signal?

 A. The Product Detector.
 B. The Automatic Load Control circuit.
 C. The Balanced Modulator.
 D. The Local Oscillator.
#ANSWER:C
@TECH

!222: In a superheterodyne receiver intended for A3E reception,
      what stage combines the received RF with energy from the local
      oscillator to produce a signal at the receivers Intermediate
      Frequency?

 A. The Mixer.
 B. The Detector.
 C. The RF Amplifier.
 D. The AF Amplifier.
#ANSWER:A
@TECH

!223: What is emission type N0N?

 A. Unmodulated Carrier.
 B. Telegraphy by On/Off keying.
 C. Telegraphy by keyed tone.
 D. Telegraphy by Frequency Shift Keying.
#ANSWER:A
@TECH

!224: What emission type is A3E?

 A. Frequency Modulated Telephony.
 B. Facsimile.
 C. Double Sideband, Amplitude Modulated Telephony.
 D. Amplitude Modulated Telegraphy.
#ANSWER:C
@TECH

!225: What emission type is J3E?

 A. Single Sideband Suppressed Carrier Amplitude Modulated Telephony.
 B. Single Sideband Suppressed Carrier Amplitude Modulated Telegraphy.
 C. Independent Sideband Suppressed Carrier Amplitude Modulated Telephony.
 D. Single Sideband Suppressed Carrier Frequency Modulated Telephony.
#ANSWER:A
@TECH

!226: What emission type is F1B?

 A. Amplitude Shift Keyed telegraphy.
 B. Frequency Shift Keyed telegraphy.
 C. Frequency Modulated telephony.
 D. Phase Modulated telephony.
#ANSWER:B
@TECH

!227: What emission type is F2B?

 A. Frequency Modulated Telephony.
 B. Frequency Modulated Telegraphy using audio tones.
 C. Frequency Modulated Facsimile using audio tones.
 D. Phase Modulated Television.
#ANSWER:B
@TECH

!228: What emission type is F3E?

 A. AM telephony.
 B. AM telegraphy.
 C. FM telegraphy.
 D. FM telephony.
#ANSWER:D
@TECH

!229: What is the emission symbol for Telegraphy by Frequency Shift
      Keying without the use of a modulating tone?

 A. F1B.
 B. F2B.
 C. A1A.
 D. J3E.
#ANSWER:A
@TECH

!230: What is the emission symbol for Telegraphy by the On/Off
      keying of a Frequency Modulating tone?

 A. F1B.
 B. F2A.
 C. A1A.
 D. J3E.
#ANSWER:B
@TECH

!231: What is the emission symbol for Telephony by
      Amplitude Modulation?

 A. A1A.
 B. A3E.
 C. J2B.
 D. F3E.
#ANSWER:B
@TECH

!232: What is the emission symbol for Telephony by
      Frequency Modulation?

 A. F2B.
 B. F3E.
 C. A3E.
 D. F1B.
#ANSWER:B
@TECH

!233: What is the meaning of the term MODULATION?

 A. The process of varying some characteristic of a carrier
    wave for the purpose of conveying information.
 B. The process of recovering audio information from a received signal.
 C. The process of increasing the average power of a Single Sideband
    transmitter.
 D. The process of suppressing the carrier in a Single Sideband
    transmitter.
#ANSWER:A
@TECH

!234: What characteristic makes emission F3E especially well
      suited for local VHF/UHF radiocommunications?

 A. Good audio fidelity and intelligibility under weak signal
    conditions.
 B. Good audio fidelity and high signal to noise ratio above a
    certain signal amplitude threshold.
 C. Better rejection of multipath distortion than the AM modes.
 D. Better carrier frequency stability than the Am modes.
#ANSWER:B
@TECH

!235: What emission is produced by a transmitter using a
      reactance modulator?

 A. A1A
 B. N0N
 C. J3E
 D. G3E
#ANSWER:D
@TECH

!236: What other emission does phase modulation most resemble?

 A. Amplitude Modulation.
 B. Pulse Modulation.
 C. Frequency Modulation.
 D. Single Sideband Modulation.
#ANSWER:C
@TECH

!237: What emission does not have sidebands resulting from modulation?

 A. A3E
 B. N0N
 C. F3E
 D. F2B
#ANSWER:B
@TECH

!238: To what is the deviation of an emission F3E transmission
      proportional?

 A. Only the frequency of the audio modulating signal.
 B. The frequency and the amplitude of the audio modulating signal.
 C. The duty cycle of the audio modulating signal.
 D. Only the amplitude of the audio modulating signal.
#ANSWER:D
@TECH

!239: What is the result of overdeviation in an emission F3E transmitter?

 A. Increased transmitter power consumption.
 B. Out of channel emissions. (Splatter)
 C. Increased transmitter range.
 D. Inadequate carrier suppression.
#ANSWER:B
@TECH

!240: What is SPLATTER?

 A. Interference to adjacent signals caused by excessive transmitter
    keying speeds.
 B. Interference to adjacent signals caused by improper transmitter
    neutralization.
 C. Interference to adjacent signals caused by overmodulation of a
    transmitter.
 D. Interference to adjacent signals caused by parasitic oscillations
    at the antenna.
#ANSWER:C
@TECH

!241: What emissions are used in Teleprinting?

 A. F1A, F2B and F1B.
 B. A2B, F1B and F2B.
 C. A1B, A2B and F2B.
 D. A2B, F1A and F2B.
#ANSWER:B
@TECH

!242: What two states of teleprinter code are most commonly used
      in Amateur Radiocommunications?

 A. Dot and Dash.
 B. Highband and Lowband.
 C. Start and Stop.
 D. Mark and Space.
#ANSWER:D
@TECH

!243: What emission type results when an AF Shift Keyer is connected
      to the microphone jack of an emission F3E transmitter?

 A. A2B
 B. F1B
 C. F2B
 D. A1F
#ANSWER:C
@TECH


!244: What antenna type best strengthens signals from a particular
      direction while attenuating those from other directions?

 A. A Monopole antenna.
 B. An Isotopic antenna.
 C. A Vertical antenna.
 D. A Beam antenna.
#ANSWER:D
@TECH

!245: What is a YAGI Antenna?

 A. Half Wavelength elements stacked vertically and excited in phase.
 B. Quarter Wavelength elements arranged horizontally and excited out of
    phase.
 C. Half Wavelength linear driven element(s) with parasitically excited
    parallel linear elements.
 D. Quarter Wavelength, triangular loop elements.
#ANSWER:C
@TECH

!246: What is the general configuration of the radiating elements of a
      horizontally polarized Yagi?

 A. Two or more straight, parallel elements arranged in the same horizontal
    plane.
 B. Vertically stacked square or circular loops arranged in parallel
    horizontal planes.
 C. Two or more wire loops arranged in parallel vertical planes.
 D. A vertical radiator arranged in the center of an effective RF ground
    plane.
#ANSWER:A
@TECH

!247: What type of Parasitic Beam Antenna uses two or more straight metal
      tubing elements arranged physically parallel to each other?

 A. A Quad Antenna.
 B. A Delta Loop Antenna.
 C. A Zepp Antenna.
 D. A Yagi Antenna.
#ANSWER:D
@TECH

!248: How many directly driven elements does a Yagi Antenna have?

 A. None; they are all parasitic.
 B. One.
 C. Two.
 D. All elements are directly driven.
#ANSWER:B
@TECH

!249: What is PARASITIC BEAM ANTENNA?

 A. An antenna where the director and reflector elements receive their
    RF excitation by induction or radiation from the driven elements.
 B. An antenna where wave traps are used to assure magnetic coupling
    among the elements.
 C. An antenna where all elements are driven by direct connection to
    the feed line.
 D. An antenna where the driven element receives its RF excitation by
    induction or radiation from the driven elements.
#ANSWER:A
@TECH

!250: What kind of antenna array is composed of a Square Full Wave
      Closed Loop Driven Element with Parallel Parasitic Element(s)?

 A. Dual Rhombic.
 B. Cubical Quad.
 C. Stacked Yagi.
 D. Delta Loop.
#ANSWER:B
@TECH

!251: Approximately how long is one side of the driven element of
      a Cubical Quad Antenna?

 A. 2 electrical wavelengths.
 B. 1 electrical wavelength.
 C. 1/2 electrical wavelength.
 D. 1/4 electrical wavelength.
#ANSWER:D
@TECH

!252: Approximately how long is the wire in the driven element of
      a Cubical Quad Antenna?

 A. 1/4 electrical wavelength.
 B. 1/2 electrical wavelength.
 C. 1 electrical wavelength.
 D. 2 electrical wavelengths.
#ANSWER:C
@TECH

!253: What is a DELTA LOOP ANTENNA?

 A. A variation of the Quad Antenna with triangular elements.
 B. A large copper ring used direction finding.
 C. An antenna system composed of three Vertical Antennas arranged in a
    triangular shape.
 D. An antenna made from several coils of wire on an insulating form.
#ANSWER:A
@TECH

!254: What is a QUBICAL QUAD ANTENNA?

 A. Four parallel metal tubes, each approximately 1/2 electrical
    wavelength long.
 B. Two or more parallel four sided wire loops, each approximately one
    electrical wavelength long.
 C. A vertical conductor 1/4 electrical wavelength high, fed at
    the bottom.
 D. A center fed wire 1/2 electrical wavelength long.
#ANSWER:B
@TECH

!255: What is the polarization of electromagnetic waves radiated
      from a Half Wavelength Antenna mounted perpendicular to the
      Earth's surface?

 A. Circularly polarized waves.
 B. Horizontally polarized waves.
 C. Parabolically polarized waves.
 D. Vertically polarized waves.
#ANSWER:D
@TECH

!256: What is the electromagnetic wave polarization of most Man Made
      Noise in the HF/VHF spectrum?

 A. Left Hand Circular.
 B. Vertically.
 C. Right Hand Circular.
 D. Horizontally.
#ANSWER:B
@TECH

!257: To what does the term VERTICAL as applied to Wave
      Polarization refer?

 A. This means that the electric lines of force in the radio wave
    are parallel to the Earth's surface.
 B. This means that the magnetic lines of force in the radio wave
    are perpendicular to the Earth's surface.
 C. This means that the electric lines of force in the radio wave
    are perpendicular to the Earth's surface.
 D. This means that the radio wave will leave the antenna and radiate
    Vertically into the Ionosphere.
#ANSWER:C
@TECH

!258: To what does the term HORIZONTAL as applied to Wave
      Polarization refer?

 A. This means that the magnetic lines of force in the radio wave
    are parallel to the Earth's surface.
 B. This means that the electric lines of force in the radio wave
    are parallel to the Earth's surface.
 C. This means that the electric lines of force in the radio wave
    are perpendicular to the Earth's surface.
 D. This means that the radio wave will leave the antenna and radiate
    Horizontally to the destination.
#ANSWER:B
@TECH

!259: What electromagnetic wave polarization does a Cubical Quad
      Antenna have when the feedpoint is in the center of a
      horizontal side?

 A. Vertical.
 B. Horizontal.
 C. Circular.
 D. Helical.
#ANSWER:B
@TECH

!260: What electromagnetic wave polarization does a Cubical Quad
      Antenna have when the feedpoint is in the center of a
      vertical side?

 A. Vertical.
 B. Horizontal.
 C. Circular.
 D. Helical.
#ANSWER:A
@TECH

!261: What electromagnetic polarization does a Cubical Quad Antenna
      have when all sides are at 45 degrees to the Earth's surface
      and the feedpoint is at the bottom corner?

 A. Vertical.
 B. Horizontal.
 C. Circular.
 D. Helical.
#ANSWER:B
@TECH

!262: What electromagnetic polarization does a Cubical Quad Antenna
      have when all sides are at 45 degrees to the Earth's surface
      and the feedpoint is at a side corner?

 A. Vertical.
 B. Horizontal.
 C. Circular.
 D. Helical.
#ANSWER:A
@TECH

!263: What is a DIRECTIONAL ANTENNA?

 A. An antenna whose parasitic elements are all constructed
    to be directors.
 B. An antenna that radiates in direct Line of Sight propagation,
    but not skywave or skip propagation.
 C. An antenna permanently mounted so as to radiate in only one direction.
 D. An antenna that radiates more strongly in some directions than others.
#ANSWER:D
@TECH

!264: What is meant by the term STANDING WAVE RATIO?

 A. The ratio of forward and reflected inductance on a feed line.
 B. The ratio of forward and reflected resistances on a feed line.
 C. The ratio of forward and reflected impedances on a feed line.
 D. The ratio of forward and reflected voltages on a feed line.
#ANSWER:D
@TECH

!265: What is meant by the term FORWARD POWER?

 A. The power traveling from the transmitter to the antenna.
 B. The power radiated from the front of the antenna.
 C. The power produced during the positive half of the RF cycle.
 D. The power used to drive a linear amplifier.
#ANSWER:A
@TECH

!266: What is meant by the term REFLECTED POWER?

 A. The power radiated from the back of the antenna.
 B. The power returned to the transmitter from the antenna.
 C. The power produced during the negative half of the RF cycle.
 D. The power reflected to the transmitter site by buildings
    and trees.
#ANSWER:B
@TECH

!267: What is STANDING WAVE RATIO a measure of?

 A. The ratio of maximum to minimum voltage on a line.
 B. The ratio of maximum to minimum reactance on a line.
 C. The ratio of maximum to minimum resistance on a line.
 D. The ratio of maximum to minimum sidebands on a line.
#ANSWER:A
@TECH

!268: What happens to the power loss in an unbalanced feed line as the
      Standing Wave Ratio increases?

 A. It is unpredictable.
 B. It becomes nonexistent.
 C. It decreases.
 D. It increases.
#ANSWER:D
@TECH

!269: What is a BALANCED LINE?

 A. Feed line with one conductor connected to ground.
 B. Feed line with both conductors connected to ground to balance out
    harmonics.
 C. Feed line with the outer conductor connected to ground at even
    intervals
 D. Feed line with neither conductor connected to ground.
#ANSWER:D
@TECH

!270: What is a BALANCED ANTENNA?

 A. A symmetrical antenna with one side of the feedpoint connected
    to ground.
 B. An antenna (or a driven element in an array) that is symmetrical
    about the feed point.
 C. A symmetrical antenna with both sides of the feed point connected
    to ground to balance out harmonics.
 D. An antenna designed to be mounted in the center.
#ANSWER:B
@TECH

!271: What is an UNBALANCED LINE?

 A. Feed line with neither conductor connected to ground.
 B. Feed line with both conductors connected to ground to balance
    out harmonics.
 C. Feed line with one conductor connected to ground.
 D. Feed line with the outer conductor connected to ground at
    uneven intervals
#ANSWER:C
@TECH

!272: What is an UNBALANCED ANTENNA?

 A. An antenna (or a driven element in an array) that is not
    symmetrical about the feed point.
 B. A symmetrical antenna having neither half connected to ground.
 C. An antenna (or a driven element in an array) that is symmetrical
    about the feed point.
 D. A symmetrical antenna with both halves coupled to ground at
    uneven intervals to balance out harmonics.
#ANSWER:A
@TECH

!273: What type of feed line is best suited to operating at a high
      Standing Wave Ratio?

 A. Coaxial cable.
 B. Twisted pair.
 C. Flat ribbon "Twin Lead."
 D. Parallel Open Wire Line.
#ANSWER:D
@TECH

!274: What is the general relationship between frequencies passing
      through a Feed Line and the losses in the Feed Line?

 A. Loss is independent of frequency.
 B. Loss increases with increasing frequency.
 C. Loss decreases with increasing frequency.
 D. There is no predictable relationship.
#ANSWER:B
@TECH

!275: What happens to RF energy not delivered to the antenna by a
      lossy Coaxial Feed Line?

 A. It is radiated by the feed line.
 B. It is returned to the transmitter's chassis ground.
 C. Some of it is dissipated as heat in the conductors and dielectric.
 D. It is canceled because of the voltage ratio of forward power to
    reflected power in the feed line.
#ANSWER:C
@TECH

!276: As the operating frequency decreases, what happens to
      conductor losses in a feed line?

 A. The losses decreases.
 B. The losses increases.
 C. The losses remains the same.
 D. The losses become infinite.
#ANSWER:A
@TECH

!277: As operating frequency increases, what happens to conductor
      losses in a feed line?

 A. The losses decreases.
 B. The losses increase.
 C. The losses remains the same.
 D. The losses decreases to zero.
#ANSWER:B
@TECH

!278: What device can be installed on a Balanced Antenna so that
      it can be fed through a Coaxial Cable?

 A. A triaxial transformer.
 B. A wavetrap.
 C. A loading Coil.
 D. A balun.
#ANSWER:D
@TECH

!279: What is a BALUN?

 A. A device that can be used to convert an antenna designed to be
    fed at the center so that it may be fed at one end.
 B. A device that may be installed on a Balanced Antenna so that
    it may be fed with unbalanced feed line.
 C. A device that can be installed on an antenna to produce
    Horizontally Polarized or Vertically Polarized waves.
 D. A device used to allow an antenna to operate on more than one band.
#ANSWER:B
@TECH
% END OF TECH QUESTIONS