Practice Exam

E8B09

1. What is meant by deviation ratio?

• A. The ratio of the highest audio modulating frequency to the average audio modulating frequency
• B. The ratio of the carrier center frequency to the audio modulating frequency
• C. The ratio of the audio modulating frequency to the center carrier frequency
• D. The ratio of the maximum carrier frequency deviation to the highest audio modulating frequency

E6A10

2. In Figure E6-2, what is the schematic symbol for an N-channel dual-gate MOSFET?

• A. 2
• B. 6
• C. 4
• D. 5

E1B01

3. Which of the following constitutes a spurious emission?

• A. An emission outside its necessary bandwidth that can be reduced or eliminated without affecting the information transmitted
• B. An amateur station transmission made at random without the proper call sign identification
• C. A signal transmitted to prevent its detection by any station other than the intended recipient
• D. Any transmitted bogus signal that interferes with another licensed radio station

E8A05

4. What would be the most accurate way of measuring the RMS voltage of a complex waveform?

• A. By measuring the voltage with a D'Arsonval meter
• B. By using a grid dip meter
• C. By using an absorption wavemeter
• D. By measuring the heating effect in a known resistor

E1A02

5. When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the lowest frequency at which a properly adjusted LSB emission will be totally within the band?

• A. The exact lower band edge
• B. 1 kHz above the lower band edge
• C. 300 Hz above the lower band edge
• D. 3 kHz above the lower band edge

E5B05

6. How long does it take for an initial charge of 20 V DC to decrease to 7.36 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it?

• A. 20 seconds
• B. 40 seconds
• C. 0.02 seconds
• D. 0.04 seconds

E4A04

7. Which of the following test instruments is used to display spurious signals from a radio transmitter?

• A. A spectrum analyzer
• B. A time-domain reflectometer
• C. A wattmeter
• D. A logic analyzer

E3C08

8. What is the name of the high-angle wave in HF propagation that travels for some distance within the F2 region?

• A. Oblique-angle ray
• B. Pedersen ray
• C. Heaviside ray
• D. Ordinary ray

E1F08

9. Which of the following types of amateur station communications are prohibited?

• A. Communications transmitted for hire or material compensation, except as otherwise provided in the rules
• B. Communications in a language other than English
• C. Communications that have a religious content
• D. Communications that have a political content, except as allowed by the Fairness Doctrine

E2A01

10. What is the direction of an ascending pass for an amateur satellite?

• A. From west to east
• B. From east to west
• C. From south to north
• D. From north to south

E2B02

11. How many horizontal lines make up a fast-scan (NTSC) television frame?

• A. 525
• B. 30
• C. 1080
• D. 60

E6C09

12. In Figure E6-5, what is the schematic symbol for an OR gate?

• A. 4
• B. 3
• C. 6
• D. 2

E7E03

13. How does an analog phase modulator function?

• A. By varying the tuning of an amplifier tank circuit to produce PM signals
• B. By varying the tuning of a microphone preamplifier to produce AM signals
• C. By varying the tuning of a microphone preamplifier to produce PM signals
• D. By varying the tuning of an amplifier tank circuit to produce AM signals

E4E01

14. Which of the following types of receiver noise can often be reduced by use of a receiver noise blanker?

• A. Heterodyne interference
• B. Ignition noise
• C. Broadband white noise
• D. All of these choices are correct

E9C05

15. What are the disadvantages of a terminated rhombic antenna for the HF bands?

• A. The antenna requires a large physical area and 4 separate supports
• B. The antenna is more sensitive to man-made static than any other type
• C. The antenna has a very narrow operating bandwidth
• D. The antenna produces a circularly polarized signal

E4D06

16. What is the term for unwanted signals generated by the mixing of two or more signals?

• A. Amplifier desensitization
• B. Adjacent channel interference
• C. Neutralization
• D. Intermodulation interference

E8D15

17. Which of the following is a typical value for the RMS voltage at a standard U.S. household electrical power outlet?

• A. 170V AC
• B. 85V AC
• C. 340V AC
• D. 120V AC

E6F01

18. What is photoconductivity?

• A. The conversion of electromotive energy to photon energy
• B. The conversion of photon energy to electromotive energy
• C. The increased conductivity of an illuminated semiconductor
• D. The decreased conductivity of an illuminated semiconductor

E9D08

19. What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?

• A. It becomes flat
• B. It is decreased
• C. It is increased
• D. No change occurs

E5A09

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

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

E1D05

21. What class of licensee is authorized to be the control operator of a space station?

• A. Only General, Advanced or Amateur Extra Class
• B. All classes
• C. All except Technician Class
• D. Only Amateur Extra Class

E1C09

22. Which of these frequencies are available for an automatically controlled repeater operating below 30 MHz?

• A. 10.100 - 10.150 MHz
• B. 24.940 - 24.990 MHz
• C. 18.110 - 18.168 MHz
• D. 29.500 - 29.700 MHz

E7F06

23. What is one purpose of a marker generator?

• A. To add time signals to a transmitted signal
• B. To provide a means of calibrating a receiver's frequency settings
• C. To add audio markers to an oscilloscope
• D. To provide a frequency reference for a phase locked loop

E9E07

24. What term best describes the interactions at the load end of a mismatched transmission line?

• A. Characteristic impedance
• B. Velocity factor
• C. Dielectric constant
• D. Reflection coefficient

E7B10

25. In Figure E7-1, what is the purpose of R1 and R2?

• A. Feedback
• B. Self bias
• C. Load resistors
• D. Fixed bias

E6D13

26. What type of CRT deflection is better when high-frequency waveforms are to be displayed on the screen?

• A. Tubular
• B. Electrostatic
• C. Radar
• D. Electromagnetic

E7C11

27. Which of the following is the common name for a filter network which is equivalent to two L networks connected back-to-back with the inductors in series and the capacitors in shunt at the input and output?

• A. Pi-L
• B. Cascode
• C. Omega
• D. Pi

E3A06

28. What frequency range would you normally tune to find EME signals in the 2 meter band?

• A. 144.000 - 144.100 MHz
• B. 144.000 - 144.001 MHz
• C. 145.000 - 145.100 MHz
• D. 144.100 - 144.300 MHz

E7H09

29. What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital to analog converter and a low-pass anti-alias filter?

• A. A phase locked loop synthesizer
• B. A direct digital synthesizer
• C. A hybrid synthesizer
• D. A diode-switching matrix synthesizer

E9A03

30. Which of the following antennas has no gain in any direction?

• A. Isotropic antenna
• B. Quarter-wave vertical
• C. Yagi
• D. Half-wave dipole

E5C03

31. In polar coordinates, what is the impedance of a network consisting of a 300-ohm-reactance capacitor, a 600-ohm-reactance inductor, and a 400-ohm resistor, all connected in series?

• A. 1300 ohms at an angle of 180 degrees
• B. 400 ohms at an angle of 0 degrees
• C. 500 ohms at an angle of 37 degrees
• D. 900 ohms at an angle of 53 degrees

E4C07

32. What does the MDS of a receiver represent?

• A. The multiplex distortion stability
• B. The minimum discernible signal
• C. The meter display sensitivity
• D. The maximum detectable spectrum

E3B10

33. What is the cause of gray-line propagation?

• A. At twilight, D-layer absorption drops while E-layer and F-layer propagation remain strong
• B. In darkness, solar absorption drops greatly while atmospheric ionization remains steady
• C. At mid afternoon, the Sun heats the ionosphere decreasing radio wave refraction and the MUF
• D. At midday, the Sun being directly overhead superheats the ionosphere causing increased refraction of radio waves

E1E11

34. What must the VE team do if an examinee scores a passing grade on all examination elements needed for an upgrade or new license?

• A. All these choices are correct
• B. Issue the examinee the new or upgrade license
• C. Photocopy all examination documents and forward them to the FCC for processing
• D. Three VEs must certify that the examinee is qualified for the license grant and that they have complied with the administering VE requirements

E7A03

35. Which of the following can divide the frequency of a pulse train by 2?

• A. An XOR gate
• B. A multiplexer
• C. An OR gate
• D. A flip-flop

E2E08

36. Which of the following HF digital modes can be used to transfer binary files?

• A. AMTOR
• B. RTTY
• C. Hellschreiber
• D. PACTOR

E7D14

37. What is one purpose of a "bleeder" resistor in a conventional (unregulated) power supply?

• A. To boost the amount of output current
• B. To balance the low-voltage filament windings
• C. To improve output voltage regulation
• D. To cut down on waste heat generated by the power supply

E6E07

38. Which of the following techniques is typically used to construct a MMIC-based microwave amplifier?

• A. Wave-soldering construction
• B. Ground-plane construction
• C. Microstrip construction
• D. Point-to-point construction

E2C04

39. On which of the following frequencies is an amateur radio contest contact generally discouraged?

• A. 28.330 MHz
• B. 146.52 MHz
• C. 3.525 MHz
• D. 14.020 MHz

E9B02

40. In the antenna radiation pattern shown in Figure E9-1, what is the front-to-back ratio?

• A. 24 dB
• B. 14 dB
• C. 18 dB
• D. 36 dB

E4B11

41. How should a portable antenna analyzer be connected when measuring antenna resonance and feed point impedance?

• A. Connect the analyzer via a high-impedance transformer to the antenna
• B. Connect the antenna and a dummy load to the analyzer
• C. Loosely couple the analyzer near the antenna base
• D. Connect the antenna feed line directly to the analyzer's connector

E8C10

42. What spread-spectrum communications technique alters the center frequency of a conventional carrier many times per second in accordance with a pseudo-random list of channels?

• A. Time-domain frequency modulation
• B. Frequency hopping
• C. Frequency compandored spread-spectrum
• D. Direct sequence

E9F06

43. What is the approximate physical length of an air-insulated, parallel conductor transmission line that is electrically one-half wavelength long at 14.10 MHz?

• A. 10 meters
• B. 71 meters
• C. 20 meters
• D. 15 meters

E9H05

44. What is the main drawback of a wire-loop antenna for direction finding?

• A. It has a bidirectional pattern
• B. It receives equally well in all directions
• C. It is practical for use only on VHF bands
• D. It is non-rotatable

E7G05

45. How can unwanted ringing and audio instability be prevented in a multi-section op-amp RC audio filter circuit?

• A. Increase both gain and Q
• B. Restrict both gain and Q
• C. Restrict Q, but increase gain
• D. Restrict gain, but increase Q

E0A07

46. How may dangerous levels of carbon monoxide from an emergency generator be detected?

• A. By the odor
• B. Only with a carbon monoxide detector
• C. By the yellowish appearance of the gas
• D. Any ordinary smoke detector can be used

E2D03

47. Which of the following digital modes is especially useful for EME communications?

• A. JT65
• B. Olivia
• C. FSK441
• D. PACTOR III

E9G11

48. How are the wavelength scales on a Smith chart calibrated?

• A. In fractions of antenna electrical frequency
• B. In fractions of transmission line electrical frequency
• C. In fractions of transmission line electrical wavelength
• D. In fractions of antenna electrical wavelength

E6B04

49. What type of semiconductor device is designed for use as a voltage-controlled capacitor?

• A. Silicon-controlled rectifier
• B. Tunnel diode
• C. Zener diode
• D. Varactor diode

E5D09

50. What happens to reactive power in an AC circuit that has both ideal inductors and ideal capacitors?

• A. It is dissipated in the formation of inductive and capacitive fields
• B. It is dissipated as heat in the circuit
• C. It is dissipated as kinetic energy in the circuit
• D. It is repeatedly exchanged between the associated magnetic and electric fields, but is not dissipated