Practice Exam

T6B11

1. What is the term that describes a device's ability to amplify a signal?

• A. On resistance
• B. Forward voltage drop
• C. Gain
• D. Forward resistance

T5D05

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

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

T4A02

3. Which of the following should be considered when selecting an accessory SWR meter?

• A. The frequency and power level at which the measurements will be made
• B. The types of modulation being used at the station
• C. All these choices are correct
• D. The distance that the meter will be located from the antenna

T9A08

4. What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

• A. 112
• B. 19
• C. 50
• D. 12

T7D11

5. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

• A. Ensure that the circuit is not powered
• B. Ensure that the applied voltages are correct
• C. Ensure that the circuit is grounded
• D. Ensure that the circuit is operating at the correct frequency

T1C07

6. Which of the following can result in revocation of the station license or suspension of the operator license?

• A. Failure to provide and maintain a correct email address with the FCC
• B. Failure to inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
• C. Failure to have a copy of your license available at your station
• D. Failure to obtain FCC type acceptance prior to using a home-built transmitter

T8B12

7. Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

• A. Listen for distortion on your downlink signal
• B. Your signal strength on the downlink should be about the same as the beacon
• C. All these choices are correct
• D. Check your signal strength report in the telemetry data

T8A12

8. Which of the following is a disadvantage of FM compared with single sideband?

• A. FM signals are harder to tune
• B. All these choices are correct
• C. Only one signal can be received at a time
• D. Voice quality is poorer

T4B05

9. What does the scanning function of an FM transceiver do?

• A. Prevents interference to nearby repeaters
• B. Checks for messages left on a digital bulletin board
• C. Tunes through a range of frequencies to check for activity
• D. Checks incoming signal deviation

T3C03

10. What is a characteristic of VHF signals received via auroral backscatter?

• A. They are distorted and signal strength varies considerably
• B. They are often received from 10,000 miles or more
• C. They are generally strongest when your antenna is aimed west
• D. They occur only during winter nighttime hours

T0C11

11. What is the definition of duty cycle during the averaging time for RF exposure?

• A. The difference between the lowest power output and the highest power output of a transmitter
• B. The difference between the PEP and average power output of a transmitter
• C. The percentage of time that a transmitter is transmitting
• D. The percentage of time that a transmitter is not transmitting

T0B09

12. Why should you avoid attaching an antenna to a utility pole?

• A. The antenna will not work properly because of induced voltages
• B. All these choices are correct
• C. The 60 Hz radiations from the feed line may increase the SWR
• D. The antenna could contact high-voltage power lines

T1A10

13. What is the Radio Amateur Civil Emergency Service (RACES)?

• A. An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
• B. A radio service using amateur stations for emergency management or civil defense communications
• C. A radio service using amateur frequencies for emergency management or civil defense communications
• D. All these choices are correct

T3B04

14. What is the velocity of a radio wave traveling through free space?

• A. Speed of sound
• B. Speed of light
• C. Speed inversely proportional to its wavelength
• D. Speed that increases as the frequency increases

T2B08

15. Which of the following applies when two stations transmitting on the same frequency interfere with each other?

• A. Interference is inevitable, so no action is required
• B. Use subaudible tones so both stations can share the frequency
• C. The stations should negotiate continued use of the frequency
• D. Both stations should choose another frequency to avoid conflict

T1F05

16. What method of call sign identification is required for a station transmitting phone signals?

• A. Send the call sign using only a phone emission
• B. Send the call sign followed by the indicator R
• C. Send the call sign using a CW or phone emission
• D. Send the call sign followed by the indicator RPT

T6C10

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

• A. Variable capacitor
• B. Connector
• C. Variable inductor
• D. Meter

T7A03

18. Which of the following is used to convert a signal from one frequency to another?

• A. Phase splitter
• B. Mixer
• C. Inverter
• D. Amplifier

T1D03

19. When is it permissible to transmit messages encoded to obscure their meaning?

• A. Only when transmitting certain approved digital codes
• B. Only when transmitting control commands to space stations or radio control craft
• C. Never
• D. Only during contests

T8D01

20. Which of the following is a digital communications mode?

• A. Packet radio
• B. IEEE 802.11
• C. All these choices are correct
• D. FT8

T6A07

21. What electrical component is typically constructed as a coil of wire?

• A. Inductor
• B. Capacitor
• C. Switch
• D. Diode

T0A02

22. What health hazard is presented by electrical current flowing through the body?

• A. All these choices are correct
• B. It may cause injury by heating tissue
• C. It may disrupt the electrical functions of cells
• D. It may cause involuntary muscle contractions

T6D03

23. Which of the following is a reason to use shielded wire?

• A. To increase the current carrying capability of the wire
• B. To couple the wire to other signals
• C. To prevent coupling of unwanted signals to or from the wire
• D. To decrease the resistance of DC power connections

T3A08

24. What is a likely cause of irregular fading of signals propagated by the ionosphere?

• A. Intermodulation distortion
• B. Random combining of signals arriving via different paths
• C. Frequency shift due to Faraday rotation
• D. Interference from thunderstorms

T1E06

25. When, under normal circumstances, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

• A. When using a club station whose trustee holds an Amateur Extra Class license
• B. At no time
• C. When designated as the control operator by an Amateur Extra Class licensee
• D. As part of a multi-operator contest team

T5B03

26. Which is equal to one kilovolt?

• A. One one-thousandth of a volt
• B. One million volts
• C. One thousand volts
• D. One hundred volts

T2C11

27. What is meant by "check" in a radiogram header?

• A. A list of stations that have relayed the message
• B. The number of words or word equivalents in the text portion of the message
• C. The call sign of the originating station
• D. A box on the message form that indicates that the message was received and/or relayed

T8C11

28. What is an amateur radio station that connects other amateur stations to the internet?

• A. A repeater
• B. A beacon
• C. A digipeater
• D. A gateway

T5A08

29. Which of the following is a good electrical insulator?

• A. Mercury
• B. Aluminum
• C. Glass
• D. Copper

T7C11

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

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

T1B05

31. How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

• A. Spread spectrum only
• B. Emergency traffic only
• C. Fast-scan television only
• D. Fixed digital message forwarding systems only

T7B04

32. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Band-pass filter
• B. Ferrite choke
• C. Low-pass filter
• D. Preamplifier

T5C01

33. What describes the ability to store energy in an electric field?

• A. Capacitance
• B. Tolerance
• C. Resistance
• D. Inductance

T9B12

34. What is standing wave ratio (SWR)?

• A. An indication of the quality of your station's ground connection
• B. The transmitter efficiency ratio
• C. A measure of how well a load is matched to a transmission line
• D. The ratio of amplifier power output to input

T2A11

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

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