Practice Exam

E6F11

1. What is the approximate open-circuit voltage produced by a fully illuminated silicon photovoltaic cell?

• A. 0.7 volts
• B. 1.5 volts
• C. 0.5 volts
• D. 1.1 volts

E6C10

2. In Figure E6-3, which is the schematic symbol for a NOR gate?

• A. 2
• B. 1
• C. 3
• D. 4

E5D08

3. What is the primary cause of loss in film capacitors at RF?

• A. Dielectric loss
• B. Self-discharge
• C. Skin effect
• D. Inductance

E8A01

4. What technique shows that a square wave is made up of a sine wave and its odd harmonics?

• A. Fourier analysis
• B. Vector analysis
• C. Numerical analysis
• D. Differential analysis

E9E08

5. What is a use for a Wilkinson divider?

• A. To divide power equally between two 50-ohm loads while maintaining 50-ohm input impedance
• B. To divide the frequency of the input to a counter to increase its frequency range
• C. To feed high-impedance antennas from a low-impedance source
• D. To divide the operating frequency of a transmitter signal so it can be used on a lower frequency band

E1C02

6. Which of the following apply to communications transmitted to amateur stations in foreign countries?

• A. All these choices are correct
• B. Communications must be limited to those incidental to the purpose of the amateur service and remarks of a personal nature
• C. Third party traffic must be limited to that intended for the exclusive use of government and non-Government Organization (NGOs) involved in emergency relief activities
• D. All transmissions must be in English

E2C12

7. What indicates the delay between a control operator action and the corresponding change in the transmitted signal?

• A. Hang time
• B. Latency
• C. Jitter
• D. Anti-VOX

E4B08

8. Which of the following can be used to determine the Q of a series-tuned circuit?

• A. The bandwidth of the circuit's frequency response
• B. The frequency shift
• C. The resonant frequency of the circuit
• D. The ratio of inductive reactance to capacitive reactance

E9G10

9. What do the arcs on a Smith chart represent?

• A. Points with constant resistance
• B. Points with constant reactance
• C. SWR
• D. Frequency

E1E03

10. What is a Volunteer Examiner Coordinator?

• A. An organization that has entered into an agreement with the FCC to coordinate, prepare, and administer amateur operator license examinations
• B. A person who has volunteered to administer amateur operator license examinations
• C. An organization paid by the volunteer examiner team to publicize and schedule examinations
• D. The person who has entered into an agreement with the FCC to be the VE session manager

E6A10

11. In Figure E6-1, which is the schematic symbol for an N-channel dual-gate MOSFET?

• A. 2
• B. 6
• C. 5
• D. 4

E8D05

12. What is the most common method of reducing key clicks?

• A. Reduce keying waveform rise and fall times
• B. Insert low-pass filters at the transmitter output
• C. Insert high-pass filters at the transmitter output
• D. Increase keying waveform rise and fall times

E8B02

13. How does the modulation index of a phase-modulated emission vary with RF carrier frequency?

• A. It decreases as the RF carrier frequency increases
• B. It increases as the RF carrier frequency increases
• C. It varies with the square root of the RF carrier frequency
• D. It does not depend on the RF carrier frequency

E9A12

14. How much gain does an antenna have compared to a half-wavelength dipole if it has 6 dB gain over an isotropic radiator?

• A. 6.0 dB
• B. 3.85 dB
• C. 2.79 dB
• D. 8.15 dB

E4E13

15. Where should a station AC surge protector be installed?

• A. At an AC outlet
• B. On the single point ground panel
• C. On a ground rod outside the station
• D. At the AC service panel

E5A08

16. What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?

• A. The voltage and current are 180 degrees out of phase
• B. The voltage leads the current by 90 degrees
• C. The current leads the voltage by 90 degrees
• D. The voltage and current are in phase

E9D12

17. What is the purpose of making a Yagi's parasitic elements either longer or shorter than resonance?

• A. Mechanical balance
• B. Wind torque cancellation
• C. Minimize losses
• D. Control of phase shift

E4A03

18. Which of the following test instruments is used to display spurious signals and/or intermodulation distortion products generated by an SSB transmitter?

• A. Logic analyzer
• B. Spectrum analyzer
• C. Network analyzer
• D. Differential resolver

E5B08

19. What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 300 ohms, R is 100 ohms, and XL is 100 ohms?

• A. 27 degrees with the voltage lagging the current
• B. 63 degrees with the voltage leading the current
• C. 27 degrees with the voltage leading the current
• D. 63 degrees with the voltage lagging the current

E8C11

20. What is the relationship between symbol rate and baud?

• A. They are the same
• B. Baud rate is half the symbol rate
• C. The relationship depends on the specific code used
• D. Baud is twice the symbol rate

E2D06

21. Which of the following is a method for establishing EME contacts?

• A. Time-synchronous transmissions alternating between stations
• B. Judging optimum transmission times by monitoring beacons reflected from the moon
• C. High-speed CW identification to avoid fading
• D. Storing and forwarding digital messages

E1F10

22. Who may be the control operator of an auxiliary station?

• A. Only Technician, General, Advanced, or Amateur Extra class operators
• B. Only Amateur Extra class operators
• C. Only General, Advanced, or Amateur Extra class operators
• D. Any licensed amateur operator

E7B04

23. What is the operating point of a Class A common emitter amplifier?

• A. Approximately halfway between the emitter voltage and the base voltage
• B. At a point where the load line intersects the zero bias current curve
• C. Approximately halfway between saturation and cutoff
• D. At a point where the bias resistor equals the load resistor

E2E13

24. Which of these digital modes has the highest data throughput under clear communication conditions?

• A. MFSK16
• B. FT8
• C. PACTOR IV
• D. 170 Hz shift, 45 baud RTTY

E7F13

25. What is the function of taps in a digital signal processing filter?

• A. Provide incremental signal delays for filter algorithms
• B. To reduce excess signal pressure levels
• C. Provide access for debugging software
• D. Select the point at which baseband signals are generated

E9H02

26. Which is generally true for 160- and 80-meter receiving antennas?

• A. All these choices are correct
• B. Low loss coax transmission line is essential for good performance
• C. Atmospheric noise is so high that directivity is much more important than losses
• D. They must be erected at least 1/2 wavelength above the ground to attain good directivity

E7C09

27. What is a crystal lattice filter?

• A. An audio filter made with four quartz crystals that resonate at 1 kHz intervals
• B. A power supply filter made with interlaced quartz crystals
• C. A filter using lattice-shaped quartz crystals for high-Q performance
• D. A filter for low-level signals made using quartz crystals

E1A03

28. What is the highest legal carrier frequency on the 20-meter band for transmitting a 2.8 kHz wide USB data signal?

• A. 14.1472 MHz
• B. 14.3490 MHz
• C. 14.0708 MHz
• D. 14.1002 MHz

E6D11

29. Which type of core material decreases inductance when inserted into a coil?

• A. Aluminum
• B. Ferrite
• C. Ceramic
• D. Brass

E1B11

30. What does PRB-1 require of state and local regulations affecting amateur radio antenna size and structures?

• A. Such structures must be permitted if certified by a registered professional engineer
• B. Reasonable accommodations of amateur radio must be made
• C. Such structures must be permitted when use for emergency communications can be demonstrated
• D. No limitations may be placed on antenna size or placement

E6B10

31. In Figure E6-2, which is the schematic symbol for a Schottky diode?

• A. 2
• B. 6
• C. 1
• D. 3

E3C10

32. What does the 304A solar parameter measure?

• A. The ratio of X-ray flux to radio flux, correlated to sunspot number
• B. The solar wind velocity at an angle of 304 degrees from the solar equator, correlated to geomagnetic storms
• C. UV emissions at 304 angstroms, correlated to the solar flux index
• D. The solar emission at 304 GHz, correlated to X-ray flare levels

E0A01

33. What is the primary function of an external earth connection or ground rod?

• A. Reduce RF current flow between pieces of equipment
• B. Lightning charge dissipation
• C. Prevent static build up on power lines
• D. Protect breaker panel from power surges

E1D12

34. Which of the following amateur stations may transmit one-way communications?

• A. A message forwarding station or automatically controlled digital station
• B. A space station, beacon station, or telecommand station
• C. A local repeater or linked repeater station
• D. All these choices are correct

E7E01

35. Which of the following can be used to generate FM phone signals?

• A. Balanced modulation of the audio amplifier
• B. Reactance modulation of a local oscillator
• C. Reactance modulation of the final amplifier
• D. Balanced modulation of a local oscillator

E7A08

36. What logical operation does an OR gate perform?

• A. It produces a 1 at its output if all inputs are 0
• B. It produces a 0 at its output if all inputs are 1
• C. It produces a 1 at its output if any input is 1
• D. It produces a 0 at its output if some but not all inputs are 1

E2B12

37. What signals SSTV receiving software to begin a new picture line?

• A. A two-tone signal
• B. Specific tone frequencies
• C. Specific tone amplitudes
• D. Elapsed time

E4C10

38. What is an advantage of having a variety of receiver bandwidths from which to select?

• A. The noise figure of the RF amplifier can be adjusted to match the modulation type, thus increasing receiver sensitivity
• B. Receiver power consumption can be reduced when wider bandwidth is not required
• C. Multiple frequencies can be received simultaneously if desired
• D. Receive bandwidth can be set to match the modulation bandwidth, maximizing signal-to-noise ratio and minimizing interference

E7H06

39. Which of these functions can be performed by a phase-locked loop?

• A. Comparison of two digital input signals and digital pulse counting
• B. Wide-band AF and RF power amplification
• C. Photovoltaic conversion and optical coupling
• D. Frequency synthesis and FM demodulation

E6E04

40. Which is the most common input and output impedance of MMICs?

• A. 450 ohms
• B. 300 ohms
• C. 50 ohms
• D. 75 ohms

E9F10

41. What impedance does a 1/8-wavelength transmission line present to an RF generator when the line is shorted at the far end?

• A. An inductive reactance
• B. The same as the characteristic impedance of the line
• C. A capacitive reactance
• D. Zero

E2A04

42. What is meant by the "mode" of an amateur radio satellite?

• A. Whether the satellite is in a polar or equatorial orbit
• B. The satellite's uplink and downlink frequency bands
• C. Whether the satellite is in a low earth or geostationary orbit
• D. The satellite's orientation with respect to the Earth

E9B05

43. What type of antenna pattern is shown in Figure E9-2?

• A. Elevation
• B. Azimuth
• C. Polarization
• D. Near field

E7G04

44. What is meant by the term "op-amp input offset voltage"?

• A. The differential input voltage needed to bring the open loop output voltage to zero
• B. The output voltage of the op-amp minus its input voltage
• C. The potential between the amplifier input terminals of the op-amp in an open loop condition
• D. The difference between the output voltage of the op-amp and the input voltage required in the immediately following stage

E9C07

45. What is the approximate feed point impedance at the center of a two-wire half-wave folded dipole antenna?

• A. 50 ohms
• B. 450 ohms
• C. 300 ohms
• D. 72 ohms

E7D03

46. What device is used as a stable voltage reference?

• A. An analog-to-digital converter
• B. An SCR
• C. A Zener diode
• D. A digital-to-analog converter

E5C03

47. Which of the following represents a pure inductive reactance in polar coordinates?

• A. A negative 45 degree phase angle
• B. A positive 90 degree phase angle
• C. A positive 45 degree phase angle
• D. A negative 90 degree phase angle

E3B12

48. What is chordal-hop propagation?

• A. Propagation across the geomagnetic equator
• B. Successive ionospheric refractions without an intermediate reflection from the ground
• C. Signals reflected back toward the transmitting station
• D. Propagation away from the great circle bearing between stations

E3A03

49. When scheduling EME contacts, which of these conditions will generally result in the least path loss?

• A. When the Moon is full
• B. When the MUF is above 30 MHz
• C. When the Moon is at apogee
• D. When the Moon is at perigee

E4D01

50. What is meant by the blocking dynamic range of a receiver?

• A. The difference in dB between the noise floor and the third-order intercept point
• B. The minimum difference in dB between two signals which produce third-order intermodulation products greater than the noise floor
• C. The minimum difference in dB between the levels of two FM signals that will cause one signal to block the other
• D. The difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression