Practice Exam

T5C12

1. What is impedance?

• A. The Q or Quality Factor of a component
• B. The power handling capability of a component
• C. The opposition to AC current flow
• D. The inverse of resistance

T6A01

2. What electrical component opposes the flow of current in a DC circuit?

• A. Resistor
• B. Inverter
• C. Inductor
• D. Transformer

T6C02

3. What is component 1 in figure T-1?

• A. Battery
• B. Connector
• C. Transistor
• D. Resistor

T0B01

4. Which of the following is good practice when installing ground wires on a tower for lightning protection?

• A. Ensure that connections are short and direct
• B. All these choices are correct
• C. Make sure all ground wire bends are right angles
• D. Put a drip loop in the ground connection to prevent water damage to the ground system

T8C06

5. How is over the air access to IRLP nodes accomplished?

• A. By using DTMF signals
• B. By using CTCSS tone codes
• C. By obtaining a password that is sent via voice to the node
• D. By entering the proper internet password

T1C06

6. From which of the following locations may an FCC-licensed amateur station transmit?

• A. From within any country that belongs to the International Telecommunication Union
• B. From within any country that is a member of the United Nations
• C. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
• D. From any vessel or craft located in international waters and documented or registered in the United States

T4A12

7. What is an electronic keyer?

• A. A device for voice activated switching from receive to transmit
• B. A device for switching antennas from transmit to receive
• C. A device that assists in manual sending of Morse code
• D. An interlock to prevent unauthorized use of a radio

T0C07

8. What hazard is created by touching an antenna during a transmission?

• A. All these choices are correct
• B. Radiation poisoning
• C. Electrocution
• D. RF burn to skin

T1B07

9. Which of the following VHF/UHF band segments are limited to CW only?

• A. 902.0 MHz to 902.1 MHz
• B. 219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
• C. All these choices are correct
• D. 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz

T1D10

10. How does the FCC define broadcasting for the Amateur Radio Service?

• A. Any transmission made by the licensed station
• B. Transmissions intended for reception by the general public
• C. Transmission of messages directed only to amateur operators
• D. Two-way transmissions by amateur stations

T8B07

11. What is Doppler shift in reference to satellite communications?

• A. A mode where the satellite receives signals on one band and transmits on another
• B. An observed change in signal frequency caused by relative motion between the satellite and Earth station
• C. A special digital communications mode for some satellites
• D. A change in the satellite orbit

T6D01

12. Which of the following devices or circuits changes an alternating current into a varying direct current signal?

• A. Amplifier
• B. Transformer
• C. Reflector
• D. Rectifier

T8D05

13. Which of the following is an application of APRS?

• A. Showing automatically the number of packets transmitted via PACTOR during a specific time interval
• B. Providing information on the number of stations signed into a repeater
• C. Providing voice over internet connection between repeaters
• D. Providing real-time tactical digital communications in conjunction with a map showing the locations of stations

T2B03

14. Which of the following describes a linked repeater network?

• A. A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
• B. A single repeater with more than one receiver
• C. Multiple repeaters with the same control operator
• D. A system of repeaters linked by APRS

T9A05

15. Which of the following increases the resonant frequency of a dipole antenna?

• A. Inserting coils in series with radiating wires
• B. Adding capacitive loading to the ends of the radiating wires
• C. Shortening it
• D. Lengthening it

T4B01

16. What is the effect of excessive microphone gain on SSB transmissions?

• A. Frequency instability
• B. Distorted transmitted audio
• C. Increased SWR
• D. All these choices are correct

T3C10

17. Which of the following bands may provide long-distance communications via the ionosphere's F region during the peak of the sunspot cycle?

• A. 23 centimeters
• B. 70 centimeters and 1.25 meters
• C. All these choices are correct
• D. 6 and 10 meters

T0A05

18. Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

• A. The power supply ripple would greatly increase
• B. All these choices are correct
• C. The larger fuse would be likely to blow because it is rated for higher current
• D. Excessive current could cause a fire

T1F10

19. Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

• A. The control operator of the originating station
• B. The owner of the repeater
• C. The control operator of the repeater
• D. Both the originating station and the repeater owner

T5A01

20. Electrical current is measured in which of the following units?

• A. Amperes
• B. Ohms
• C. Watts
• D. Volts

T9B11

21. Which of the following types of feed line has the lowest loss at VHF and UHF?

• A. 50-ohm flexible coax
• B. Multi-conductor unbalanced cable
• C. 75-ohm flexible coax
• D. Air-insulated hardline

T1E01

22. When may an amateur station transmit without a control operator?

• A. When the station licensee is away and another licensed amateur is using the station
• B. When using automatic control, such as in the case of a repeater
• C. Never
• D. When the transmitting station is an auxiliary station

T8A04

23. Which type of modulation is commonly used for VHF and UHF voice repeaters?

• A. FM or PM
• B. AM
• C. SSB
• D. PSK

T6B12

24. What are the names of the electrodes of a bipolar junction transistor?

• A. Pole one, pole two, output
• B. Emitter, base, collector
• C. Input, output, supply
• D. Signal, bias, power

T2A11

25. What term describes an amateur station that is transmitting and receiving on the same frequency?

• A. Simplex
• B. Full duplex
• C. Multiplex
• D. Diplex

T7D04

26. Which instrument is used to measure electric current?

• A. A voltmeter
• B. An ohmmeter
• C. An electrometer
• D. An ammeter

T7C11

27. What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

• A. It requires special techniques to prevent moisture in the cable
• B. It cannot be used for VHF or UHF antennas
• C. It cannot be used at below freezing temperatures
• D. It has more loss per foot

T1A06

28. What is the FCC Part 97 definition of a beacon?

• A. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
• B. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
• C. A government transmitter marking the amateur radio band edges
• D. A bulletin sent by the FCC to announce a national emergency

T7B07

29. Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

• A. Using double-shielded coaxial cable
• B. Installing a band-reject filter
• C. Installing bypass capacitors on the microphone cable
• D. Installing an RF preamplifier

T2C03

30. What technique is used to ensure that voice messages containing unusual words are received correctly?

• A. Send the words by voice and Morse code
• B. All these choices are correct
• C. Speak very loudly into the microphone
• D. Spell the words using a standard phonetic alphabet

T5B06

31. Which is equal to 3000 milliamperes?

• A. 0.003 amperes
• B. 0.3 amperes
• C. 3 amperes
• D. 3,000,000 amperes

T3B06

32. What is the formula for converting frequency to approximate wavelength in meters?

• A. Wavelength in meters equals frequency in hertz multiplied by 300
• B. Wavelength in meters equals frequency in megahertz divided by 300
• C. Wavelength in meters equals frequency in hertz divided by 300
• D. Wavelength in meters equals 300 divided by frequency in megahertz

T3A10

33. What effect does multi-path propagation have on data transmissions?

• A. Transmission rates must be increased by a factor equal to the number of separate paths observed
• B. No significant changes will occur if the signals are transmitted using FM
• C. Error rates are likely to increase
• D. Transmission rates must be decreased by a factor equal to the number of separate paths observed

T7A09

34. What is the function of the SSB/CW-FM switch on a VHF power amplifier?

• A. Change the frequency range of the amplifier to operate in the proper segment of the band
• B. Reduce the received signal noise
• C. Change the mode of the transmitted signal
• D. Set the amplifier for proper operation in the selected mode

T5D05

35. What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

• A. 18 ohms
• B. 8 ohms
• C. 13.5 ohms
• D. 0.125 ohms