Practice Exam

E0A08

1. What does SAR measure?

• A. The rate at which RF energy is absorbed by the body
• B. The rate of RF energy reflected from stationary terrain
• C. Signal Amplification Rating
• D. Synthetic Aperture Ratio of the human body

E9D08

2. What happens as the Q of an antenna increases?

• A. SWR bandwidth increases
• B. SWR bandwidth decreases
• C. More common-mode current is present on the feed line
• D. Gain is reduced

E5B03

3. How is impedance in polar form converted to an equivalent admittance?

• A. Take the square root of the magnitude and add 180 degrees to the angle
• B. Take the reciprocal of the angle and change the sign of the magnitude
• C. Square the magnitude and subtract 90 degrees from the angle
• D. Take the reciprocal of the magnitude and change the sign of the angle

E8A07

4. What determines the PEP-to-average power ratio of a single-sideband phone signal?

• A. The degree of carrier suppression
• B. The frequency of the modulating signal
• C. Speech characteristics
• D. Amplifier gain

E5A13

5. What is an effect of increasing Q in a series resonant circuit?

• A. Phase shift can become uncontrolled
• B. Parasitic effects are minimized
• C. Internal voltages increase
• D. Fewer components are needed for the same performance

E6C04

6. Which of the following is an advantage of BiCMOS logic?

• A. It is immune to electrostatic damage
• B. All these choices are correct
• C. Its simplicity results in much less expensive devices than standard CMOS
• D. It has the high input impedance of CMOS and the low output impedance of bipolar transistors

E1A07

7. What is the maximum power permitted on the 2200 meter band?

• A. 50 watts PEP
• B. 5 watts EIRP (Equivalent isotropic radiated power)
• C. 100 watts PEP
• D. 1 watt EIRP (Equivalent isotropic radiated power)

E8B05

8. What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus-or-minus 5 kHz when the maximum modulation frequency is 3 kHz?

• A. 0.167
• B. 0.6
• C. 60
• D. 1.67

E2A10

9. What type of satellite appears to stay in one position in the sky?

• A. HEO
• B. Geostationary
• C. Geomagnetic
• D. LEO

E3B07

10. What happens to linearly polarized radio waves that split into ordinary and extraordinary waves in the ionosphere?

• A. They become phase locked
• B. They are bent toward the magnetic poles
• C. They become depolarized
• D. They become elliptically polarized

E7E05

11. What circuit is added to an FM transmitter to boost the higher audio frequencies?

• A. A pre-emphasis network
• B. A de-emphasis network
• C. A heterodyne enhancer
• D. A heterodyne suppressor

E5C04

12. What coordinate system is often used to display the resistive, inductive, and/or capacitive reactance components of impedance?

• A. Maidenhead grid
• B. Rectangular coordinates
• C. Faraday grid
• D. Elliptical coordinates

E2D06

13. Which of the following describes a method of establishing EME contacts?

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

E2B02

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

• A. 1080
• B. 525
• C. 60
• D. 30

E8D11

15. What is one advantage of using ASCII code for data communications?

• A. It is possible to transmit both upper and lower case text
• B. It includes built-in error correction features
• C. It uses one character as a shift code to send numeric and special characters
• D. It contains fewer information bits per character than any other code

E1C03

16. How do the control operator responsibilities of a station under automatic control differ from one under local control?

• A. Under local control a control operator is not required to be present at a control point
• B. Under automatic control there is no control operator
• C. Under automatic control the control operator is not required to be present at the control point
• D. Under local control there is no control operator

E9G04

17. What are the two families of circles and arcs that make up a Smith chart?

• A. Reactance and voltage
• B. Voltage and impedance
• C. Resistance and voltage
• D. Resistance and reactance

E6B07

18. What is the failure mechanism when a junction diode fails due to excessive current?

• A. Charge carrier depletion
• B. Excessive junction temperature
• C. Insufficient forward voltage
• D. Excessive inverse voltage

E7C12

19. What is one advantage of a Pi-matching network over an L-matching network consisting of a single inductor and a single capacitor?

• A. The Q of Pi-networks can be controlled
• B. L-networks cannot perform impedance transformation
• C. Pi-networks provide balanced input and output
• D. Pi-networks are more stable

E9F08

20. Which of the following is a significant difference between foam dielectric coaxial cable and solid dielectric cable, assuming all other parameters are the same?

• A. Foam dielectric has higher velocity factor
• B. Foam dielectric has lower loss per unit of length
• C. Foam dielectric has lower safe operating voltage limits
• D. All these choices are correct

E1E09

21. What may be the penalty for a VE who fraudulently administers or certifies an examination?

• A. A fine of up to $1000 per occurrence
• B. All these choices are correct
• C. A sentence of up to one year in prison
• D. Revocation of the VE's amateur station license grant and the suspension of the VE's amateur operator license grant

E9B07

22. How does the total amount of radiation emitted by a directional gain antenna compare with the total amount of radiation emitted from a theoretical isotropic antenna, assuming each is driven by the same amount of power?

• A. The total amount of radiation from the directional antenna is stronger by its front-to-back ratio
• B. The radiation from the isotropic antenna is 2.15 dB stronger than that from the directional antenna
• C. The total amount of radiation from the directional antenna is increased by the gain of the antenna
• D. They are the same

E3A10

23. Which type of atmospheric structure can create a path for microwave propagation?

• A. Temperature inversion
• B. Wind shear
• C. The jet stream
• D. Dust devil

E9C04

24. What happens to the radiation pattern of an unterminated long wire antenna as the wire length is increased?

• A. The lobes align more in the direction of the wire
• B. The lobes become more perpendicular to the wire
• C. The vertical angle increases
• D. The front-to-back ratio decreases

E7D02

25. What is a characteristic of a switching electronic voltage regulator?

• A. It gives a ramp voltage at its output
• B. It is generally less efficient than a linear regulator
• C. The resistance of a control element is varied in direct proportion to the line voltage or load current
• D. The controlled device's duty cycle is changed to produce a constant average output voltage

E1B03

26. Within what distance must an amateur station protect an FCC monitoring facility from harmful interference?

• A. 3 miles
• B. 1 mile
• C. 10 miles
• D. 30 miles

E7G10

27. What absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 1800 ohms and RF is 68 kilohms?

• A. 38
• B. 0.03
• C. 1
• D. 76

E2E04

28. What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?

• A. One of the signal filters is saturated
• B. Selective fading has occurred
• C. The mark and space signal have been inverted
• D. The receiver has drifted 5 kHz from the desired receive frequency

E9A07

29. What is the effective isotropic radiated power of a repeater station with 200 watts transmitter power output, 2 dB feed line loss, 2.8 dB duplexer loss, 1.2 dB circulator loss, and 7 dBi antenna gain?

• A. 63.2 watts
• B. 159 watts
• C. 252 watts
• D. 632 watts

E6A04

30. What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?

• A. Acceptor impurity
• B. Donor impurity
• C. Insulator impurity
• D. N-type impurity

E7A11

31. What type of logic defines "1" as a high voltage?

• A. Positive Logic
• B. Assertive Logic
• C. Reverse Logic
• D. Negative logic

E4B11

32. Which of the following can be measured with a vector network analyzer?

• A. Input impedance
• B. Output impedance
• C. Reflection coefficient
• D. All these choices are correct

E6F01

33. What absorbs the energy from light falling on a photovoltaic cell?

• A. Photons
• B. Electrons
• C. Holes
• D. Protons

E4C03

34. What is the term for the suppression in an FM receiver of one signal by another stronger signal on the same frequency?

• A. Frequency discrimination
• B. Desensitization
• C. Cross-modulation interference
• D. Capture effect

E9E05

35. How must an antenna's driven element be tuned to use a hairpin matching system?

• A. The driven element reactance must be inductive
• B. The driven element resonance must be lower than the operating frequency
• C. The driven element radiation resistance must be higher than the characteristic impedance of the transmission line
• D. The driven element reactance must be capacitive

E7H12

36. Which of the following must be done to ensure that a crystal oscillator provides the frequency specified by the crystal manufacturer?

• A. Bias the crystal at a specified current
• B. Bias the crystal at a specified voltage
• C. Provide the crystal with a specified parallel inductance
• D. Provide the crystal with a specified parallel capacitance

E1F08

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

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

E2C06

38. During a VHF/UHF contest, in which band segment would you expect to find the highest level of SSB or CW activity?

• A. In the middle of each band, usually on the national calling frequency
• B. At the top of each band, usually in a segment reserved for contests
• C. In the weak signal segment of the band, with most of the activity near the calling frequency
• D. In the middle of the band, usually 25 kHz above the national calling frequency

E9H10

39. How can the output voltage of a multiple-turn receiving loop antenna be increased?

• A. By increasing the number of turns and/or the area
• B. By utilizing high impedance wire for the coupling loop
• C. By reducing the permeability of the loop shield
• D. By winding adjacent turns in opposing directions

E7F10

40. What aspect of receiver analog-to-digital conversion determines the maximum receive bandwidth of a Direct Digital Conversion SDR?

• A. Sample width in bits
• B. Sample clock phase noise
• C. Sample rate
• D. Processor latency

E4E11

41. What could cause local AM broadcast band signals to combine to generate spurious signals in the MF or HF bands?

• A. Nearby corroded metal joints are mixing and re-radiating the broadcast signals
• B. One or more of the broadcast stations is transmitting an over-modulated signal
• C. Your station receiver IF amplifier stage is defective
• D. You are receiving skywave signals from a distant station

E8C05

42. What is the approximate bandwidth of a 13-WPM International Morse Code transmission?

• A. 52 Hz
• B. 13 Hz
• C. 104 Hz
• D. 26 Hz

E3C11

43. What does VOACAP software model?

• A. AC voltage and impedance
• B. HF propagation
• C. VHF radio propagation
• D. AC current and impedance

E4D08

44. What causes intermodulation in an electronic circuit?

• A. Lack of neutralization
• B. Nonlinear circuits or devices
• C. Positive feedback
• D. Too little gain

E7B13

45. Which of the following describes an emitter follower (or common collector) amplifier?

• A. An amplifier with a low impedance output that follows the base input voltage
• B. A differential amplifier with both inputs fed to the emitter of the input transistor
• C. A two-transistor amplifier with the emitters sharing a common bias resistor
• D. An OR circuit with only one emitter used for output

E6D11

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

• A. Brass
• B. Powdered iron
• C. Ceramic
• D. Ferrite

E6E07

47. What type of transmission line is used for connections to MMICs?

• A. Circular waveguide
• B. Microstrip
• C. Parallel wire
• D. Miniature coax

E4A07

48. Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge to measure antenna SWR?

• A. Antenna analyzers display a time-varying representation of the modulation envelope
• B. All these choices are correct
• C. Antenna analyzers do not need an external RF source
• D. Antenna analyzers automatically tune your antenna for resonance

E5D03

49. What is microstrip?

• A. Lightweight transmission line made of common zip cord
• B. Short lengths of coax mounted on printed circuit boards to minimize time delay between microwave circuits
• C. Precision printed circuit conductors above a ground plane that provide constant impedance interconnects at microwave frequencies
• D. Miniature coax used for low power applications

E1D12

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

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