Practice Exam

G5A01

1. What is impedance?

• A. The electric charge stored by a capacitor
• B. The opposition to the flow of current in an AC circuit
• C. The inverse of resistance
• D. The force of repulsion between two similar electric fields

G7C03

2. What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

• A. Detector
• B. IF amplifier
• C. Balanced modulator
• D. Mixer

G8C12

3. Which type of code is used for sending characters in a PSK31 signal?

• A. Binary
• B. Varicode
• C. Viterbi
• D. Volumetric

G8A05

4. What type of modulation varies the instantaneous power level of the RF signal?

• A. Frequency modulation
• B. Amplitude modulation
• C. Frequency shift keying
• D. Phase modulation

G0B13

5. What must you do when powering your house from an emergency generator?

• A. All these choices are correct
• B. Insure that the generator is not grounded
• C. Disconnect the incoming utility power feed
• D. Insure that all lightning grounds are disconnected

G3A12

6. What does the K-index indicate?

• A. The short-term stability of Earth's magnetic field
• B. The relative position of sunspots on the surface of the sun
• C. The solar radio flux at Boulder, Colorado
• D. The stability of the sun's magnetic field

G1B02

7. Which of the following is true concerning access to frequencies?

• A. Nets always have priority
• B. Except during emergencies, no amateur station has priority access to any frequency
• C. Contest operations must always yield to non-contest use of frequencies
• D. QSOs in progress always have priority

G3B10

8. What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

• A. 180 miles
• B. 2,500 miles
• C. 1,200 miles
• D. 12,000 miles

G5C17

9. What is the value in nanofarads (nF) of a 22,000 picofarad (pF) capacitor?

• A. 2.2
• B. 22
• C. 220
• D. 0.22

G2A08

10. What is the recommended way to break in to a phone contact?

• A. Say "QRZ" several times, followed by your call sign
• B. Say "Breaker Breaker"
• C. Say your call sign once
• D. Say "CQ" followed by the call sign of either station

G9B08

11. How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

• A. It peaks at about 1/8 wavelength from the end
• B. It steadily decreases
• C. It steadily increases
• D. It is unaffected by the location of the feed point

G9A01

12. Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

• A. The distance between the centers of the conductors and the radius of the conductors
• B. The distance between the centers of the conductors and the length of the line
• C. The radius of the conductors and the frequency of the signal
• D. The frequency of the signal and the length of the line

G7B10

13. Which of the following describes a linear amplifier?

• A. An amplifier used as a frequency multiplier
• B. A Class C high efficiency amplifier
• C. Any RF power amplifier used in conjunction with an amateur transceiver
• D. An amplifier in which the output preserves the input waveform

G1D01

14. Who may receive partial credit for the elements represented by an expired Amateur Radio license?

• A. Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
• B. Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
• C. Anyone who held an FCC-issued Amateur Radio license that has been expired for not less than 5 years and not more than 15 years
• D. Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC

G6A02

15. What is an advantage of the low internal resistance of nickel-cadmium batteries?

• A. High discharge current
• B. High voltage
• C. Rapid recharge
• D. Long life

G9D07

16. Which of the following describes a log periodic antenna?

• A. Element length and spacing vary logarithmically along the boom
• B. SWR varies periodically as a function of boom length
• C. Impedance varies periodically as a function of frequency
• D. Gain varies logarithmically as a function of frequency

G9C16

17. What is a beta or hairpin match?

• A. It is a ¼ wavelength section of 75 ohm coax in series with the feed point of a Yagi to provide impedance matching
• B. It is a section of 300 ohm twinlead used to match a folded dipole antenna
• C. It is a series capacitor selected to cancel the inductive reactance of a folded dipole antenna
• D. It is a shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching

G6B09

18. Which of the following is a characteristic of a liquid crystal display?

• A. It consumes relatively high power
• B. It utilizes ambient or back lighting
• C. It offers a wide dynamic range
• D. It has relatively short lifetime

G8B01

19. Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

• A. Local oscillator
• B. RF input
• C. Image frequency
• D. Beat frequency oscillator

G4A12

20. Which of the following is a common use for the dual-VFO feature on a transceiver?

• A. To allow transmitting on two frequencies at once
• B. To permit full duplex operation — that is, transmitting and receiving at the same time
• C. To permit monitoring of two different frequencies
• D. To facilitate computer interface

G2E10

21. Which of the following is a way to establish contact with a digital messaging system gateway station?

• A. Transmit a connect message on the station's published frequency
• B. Send an email to the system control operator
• C. Send QRL in Morse code
• D. Respond when the station broadcasts its SSID

G5B11

22. What is the ratio of peak envelope power to average power for an unmodulated carrier?

• A. 1.414
• B. 1.00
• C. 2.00
• D. 0.707

G1E03

23. What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

• A. No third-party traffic may be transmitted
• B. The interrogating transmission must be made by another automatically controlled station
• C. The station initiating the contact must be under local or remote control
• D. The control operator of the interrogating station must hold an Amateur Extra Class license

G4B02

24. Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

• A. Input impedance is much lower
• B. Complex impedances can be easily measured
• C. Complex waveforms can be measured
• D. An oscilloscope uses less power

G4C03

25. What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?

• A. Distorted speech
• B. On-and-off humming or clicking
• C. Clearly audible speech
• D. A steady hum whenever the transmitter is on the air

G4E08

26. What is the name of the process by which sunlight is changed directly into electricity?

• A. Photosynthesis
• B. Photon decomposition
• C. Photon emission
• D. Photovoltaic conversion

G1C13

27. What must be done before using a new digital protocol on the air?

• A. Type-certify equipment to FCC standards
• B. Publicly document the technical characteristics of the protocol
• C. Submit a rule-making proposal to the FCC describing the codes and methods of the technique
• D. Obtain an experimental license from the FCC

G0A03

28. How can you determine that your station complies with FCC RF exposure regulations?

• A. By calculation based on computer modeling
• B. By calculation based on FCC OET Bulletin 65
• C. All these choices are correct
• D. By measurement of field strength using calibrated equipment

G4D10

29. How close to the lower edge of the phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

• A. At least 3 kHz below the edge of the segment
• B. At least 1 kHz below the edge of the segment
• C. At least 1 kHz above the edge of the segment
• D. At least 3 kHz above the edge of the segment

G2B04

30. When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

• A. 1 to 3 kHz
• B. 150 to 500 Hz
• C. 3 to 6 kHz
• D. 5 to 50 Hz

G2C11

31. What does the Q signal "QRV" mean?

• A. There is interference on the frequency
• B. You are sending too fast
• C. I am ready to receive messages
• D. I am quitting for the day

G2D11

32. Which of the following is typical of the lower HF frequencies during the summer?

• A. High levels of atmospheric noise or "static"
• B. Heavy distortion on signals due to photon absorption
• C. Poor propagation at any time of day
• D. World-wide propagation during the daylight hours

G1A05

33. Which of the following frequencies is in the General class portion of the 40-meter band (in ITU Region 2)?

• A. 7.250 MHz
• B. 7.500 MHz
• C. 40.500 MHz
• D. 40.200 MHz

G7A05

34. What portion of the AC cycle is converted to DC by a half-wave rectifier?

• A. 360 degrees
• B. 90 degrees
• C. 270 degrees
• D. 180 degrees

G3C01

35. Which ionospheric layer is closest to the surface of Earth?

• A. The E layer
• B. The F1 layer
• C. The D layer
• D. The F2 layer