ham exam 3 General Pretest

G4D06

1. Where is an S meter found?

  • A. In a transmitter
  • B. In a receiver
  • C. In an SWR bridge
  • D. In a conductance bridge

G9C04

2. Which statement about a three-element; single-band Yagi antenna is true?

  • A. The reflector is normally the longest parasitic element
  • B. All of the elements must be the same length
  • C. The reflector is normally the shortest parasitic element
  • D. The director is normally the longest parasitic element

G1E09

3. What language must you use when identifying your station if you are using a language other than English in making a contact using phone emission?

  • A. English
  • B. Any language of a country that is a member of the ITU
  • C. The language being used for the contact
  • D. Any language if the US has a third party agreement with that country

G3B11

4. What happens to HF propagation when the Lowest Usable Frequency (LUF) exceeds the Maximum Usable Frequency (MUF)?

  • A. Double hop propagation along the path is more common
  • B. HF communications over the path are enhanced
  • C. No HF radio frequency will support ordinary skywave communications over the path
  • D. Propagation over the path on all HF frequencies is enhanced

G3A03

5. Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio-wave propagation on the Earth?

  • A. 20 to 40 hours
  • B. 1 to 2 hours
  • C. 8 minutes
  • D. 28 days

G1C04

6. Which of the following is a limitation on transmitter power on the 14 MHz band?

  • A. Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
  • B. Power should be limited as necessary to avoid interference to another radio service on the frequency
  • C. Only the minimum power necessary to carry out the desired communications should be used
  • D. Effective radiated power cannot exceed 3000 watts

G7C06

7. What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

  • A. Substantially lower
  • B. Substantially higher
  • C. Twice the transmission line impedance
  • D. About the same

G3C06

8. What is a characteristic of HF scatter signals?

  • A. They have high intelligibility
  • B. They have very large swings in signal strength
  • C. They have a wavering sound
  • D. All of these choices are correct

G1B11

9. How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

  • A. In conformance with the rules of the IARU
  • B. All of these choices are correct
  • C. In conformance with good engineering and good amateur practice
  • D. In conformance with Amateur Radio custom

G0A13

10. What precaution should be taken when installing a ground-mounted antenna?

  • A. It should not be installed higher than you can reach
  • B. It should not be installed in a wet area
  • C. It should be installed so no one can be exposed to RF radiation in excess of maximum permissible limits
  • D. It should limited to 10 feet in height

G8B09

11. Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

  • A. It minimizes power consumption in the receiver
  • B. It improves impedance matching of the antenna
  • C. It is required by FCC rules
  • D. It results in the best signal to noise ratio

G0B02

12. What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

  • A. AWG number 8
  • B. AWG number 16
  • C. AWG number 20
  • D. AWG number 12

G5C12

13. What is the capacitance of a 20 microfarad capacitor in series with a 50 microfarad capacitor?

  • A. 14.3 microfarads
  • B. .07 microfarads
  • C. 70 microfarads
  • D. 1000 microfarads

G5B04

14. How many watts of electrical power are used by a 12-VDC light bulb that draws 0.2 amperes?

  • A. 24 watts
  • B. 6 watts
  • C. 60 watts
  • D. 2.4 watts

G4C13

15. Which of the following can perform automatic notching of interfering carriers?

  • A. Balanced mixing
  • B. A Digital Signal Processor (DSP) filter
  • C. A noise limiter
  • D. Band-pass tuning

G7B03

16. Which of the following describes the function of a two input AND gate?

  • A. Output is low only when both inputs are high
  • B. Output is low when either or both inputs are high
  • C. Output is high when either or both inputs are low
  • D. Output is high only when both inputs are high

G2A02

17. Which of the following modes is most commonly used for voice communications on the 160, 75, and 40 meter bands?

  • A. Lower sideband
  • B. Vestigial sideband
  • C. Upper sideband
  • D. Double sideband

G4B01

18. What item of test equipment contains horizontal and vertical channel amplifiers?

  • A. An ammeter
  • B. A signal generator
  • C. An ohmmeter
  • D. An oscilloscope

G5A09

19. What unit is used to measure reactance?

  • A. Farad
  • B. Ohm
  • C. Siemens
  • D. Ampere

G2D03

20. What skills learned during "hidden transmitter hunts" are of help to the Amateur Auxiliary?

  • A. Hunters have an opportunity to transmit on non-amateur frequencies
  • B. Identification of out of band operation
  • C. Identification of different call signs
  • D. Direction finding used to locate stations violating FCC Rules

G9B11

21. What is the approximate length for a 1/2-wave dipole antenna cut for 3.550 MHz?

  • A. 84 feet
  • B. 42 feet
  • C. 263 feet
  • D. 131 feet

G8A07

22. Which of the following phone emissions uses the narrowest frequency bandwidth?

  • A. Phase modulation
  • B. Single sideband
  • C. Double sideband
  • D. Frequency modulation

G2C10

23. What does the Q signal "QRQ" mean?

  • A. Quitting operation
  • B. Zero beat my signal
  • C. Slow down
  • D. Send faster

G9A04

24. What is the reason for the occurrence of reflected power at the point where a feed line connects to an antenna?

  • A. A difference between feed-line impedance and antenna feed-point impedance
  • B. Using more transmitter power than the antenna can handle
  • C. Operating an antenna at its resonant frequency
  • D. Feeding the antenna with unbalanced feed line

G4A06

25. What type of device is often used to enable matching the transmitter output to an impedance other than 50 ohms?

  • A. Balanced modulator
  • B. Q Multiplier
  • C. Antenna coupler
  • D. SWR Bridge

G6C09

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

  • A. It has a wide viewing angle
  • B. It requires ambient or back lighting
  • C. It offers a wide dynamic range
  • D. All of these choices are correct

G1D06

27. When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its Web site?

  • A. Whenever you operate using Technician frequency privileges
  • B. Whenever you operate on any amateur frequency
  • C. A special identifier is not required as long as your General Class license application has been filed with the FCC
  • D. Whenever you operate using General Class frequency privileges

G7A05

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

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

G4E11

29. Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

  • A. The voltage and current ratings of such systems are not compatible with amateur equipment
  • B. The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
  • C. A large energy storage system is needed to supply power when the wind is not blowing
  • D. All of these choices are correct

G2E04

30. What segment of the 20 meter band is most often used for data transmissions?

  • A. 14.000 - 14.050 MHz
  • B. 14.275 - 14.350 MHz
  • C. 14.070 - 14.100 MHz
  • D. 14.150 - 14.225 MHz

G6B15

31. When is it acceptable to recharge a carbon-zinc primary cell?

  • A. As long as the voltage has not been allowed to drop below 1.0 volt
  • B. Never
  • C. When a constant current charger is used
  • D. When the cell is kept warm during the recharging period

G1A08

32. Which of the following frequencies is within the General Class portion of the 20 meter phone band?

  • A. 14005 kHz
  • B. 14405 kHz
  • C. 14105 kHz
  • D. 14305 kHz

G6A12

33. What is a common name for an inductor used to help smooth the DC output from the rectifier in a conventional power supply?

  • A. Filter choke
  • B. Back EMF choke
  • C. Charging inductor
  • D. Repulsion coil

G2B04

34. When selecting a CW transmitting frequency, what minimum frequency separation should you allow in order to minimize interference to stations on adjacent frequencies?

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

G9D06

35. Which of the following is an advantage of a log periodic antenna?

  • A. Harmonic suppression
  • B. Higher gain per element than a Yagi antenna
  • C. Wide bandwidth
  • D. Polarization diversity

 

 

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