E0A09: Which insulating material commonly used as a thermal conductor for some types of electronic devices is extremely toxic if broken or crushed and the particles are accidentally inhaled?

Mica

Zinc oxide

Uranium Hexaflouride

E1A02: 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?

The exact lower band edge

300 Hz above the lower band edge

1 kHz above the lower band edge

E1B05: What is the maximum bandwidth for a data emission on 60 meters?

60 Hz

170 Hz

1.5 kHz

E1C07: What is meant by local control?

Controlling a station through a local auxiliary link

Automatically manipulating local station controls

Controlling a repeater using a portable handheld transceiver

E1D09: Which amateur service UHF bands have frequencies available for a space station?

70 cm

70 cm and 33 cm

33 cm and 13 cm

E1E12: What must the VE team do with the application form if the examinee does not pass the exam?

Maintain the application form with the VEC's records

Send the application form to the FCC and inform the FCC of the grade

Destroy the application form

E1F10: What is the maximum transmitter power for an amateur station transmitting spread spectrum communications?

1 W

1.5 W

1.5 kW

E2A05: What do the letters in a satellite's mode designator specify?

Power limits for uplink and downlink transmissions

The location of the ground control station

The polarization of uplink and downlink signals

E2B11: What is the function of the Vertical Interval Signaling (VIS) code transmitted as part of an SSTV transmission?

To lock the color burst oscillator in color SSTV images

To provide vertical synchronization

To identify the call sign of the station transmitting

E2C10: Why might a DX station state that they are listening on another frequency?

Because the DX station may be transmitting on a frequency that is prohibited to some responding stations

To separate the calling stations from the DX station

To reduce interference, thereby improving operating efficiency

E2D04: What is the purpose of digital store-and-forward functions on an Amateur Radio satellite?

To upload operational software for the transponder

To delay download of telemetry between satellites

To relay messages between satellites

E2E07: What is the typical bandwidth of a properly modulated MFSK16 signal?

31 Hz

550 Hz

2.16 kHz

E3A01: What is the approximate maximum separation measured along the surface of the Earth between two stations communicating by Moon bounce?

500 miles, if the Moon is at perigee

2000 miles, if the Moon is at apogee

5000 miles, if the Moon is at perigee

E3B11: Which of the following describes gray-line propagation?

Backscatter contacts on the 10 meter band

Over the horizon propagation on the 6 and 2 meter bands

Tropospheric propagation on the 2 meter and 70 centimeter bands

E3C10: How does the performance of a horizontally polarized antenna mounted on the side of a hill compare with the same antenna mounted on flat ground?

The main lobe takeoff angle increases in the downhill direction

The horizontal beam width decreases in the downhill direction

The horizontal beam width increases in the uphill direction

E4A12: Which of the following procedures is an important precaution to follow when connecting a spectrum analyzer to a transmitter output?

Use high quality double shielded coaxial cables to reduce signal losses

Match the antenna to the load

All of these choices are correct

E4B08: Which of the following is a characteristic of a good DC voltmeter?

High reluctance input

Low reluctance input

Low impedance input

E4C04: What is the definition of the noise figure of a receiver?

The ratio of atmospheric noise to phase noise

The noise bandwidth in Hertz compared to the theoretical bandwidth of a resistive network

The ratio of thermal noise to atmospheric noise

E4D08: What causes intermodulation in an electronic circuit?

Too little gain

Lack of neutralization

Positive feedback

E4E07: How can you determine if line noise interference is being generated within your home?

By checking the power line voltage with a time domain reflectometer

By observing the AC power line waveform with an oscilloscope

By observing the AC power line voltage with a spectrum analyzer

E5A07: What is the magnitude of the current at the input of a parallel RLC circuit at resonance?

Maximum

R/L

L/R

E5B05: 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?

0.04 seconds

20 seconds

40 seconds

E5C16: In polar coordinates, what is the impedance of a circuit that has an admittance of 7.09 millisiemens at 45 degrees?

5.03 E-06 ohms at an angle of 45 degrees

19,900 ohms at an angle of -45 degrees

141 ohms at an angle of 45 degrees

E5D15: What is the power factor of an RL circuit having a 45 degree phase angle between the voltage and the current?

0.866

1.0

0.5

E6A12: Why do many MOSFET devices have internally connected Zener diodes on the gates?

To provide a voltage reference for the correct amount of reverse-bias gate voltage

To protect the substrate from excessive voltages

To keep the gate voltage within specifications and prevent the device from overheating

E6B09: What is a common use for point contact diodes?

As a constant current source

As a constant voltage source

As a high voltage rectifier

E6C11: In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?

2

4

6

E6D05: What is a liquid-crystal display (LCD)?

A modern replacement for a quartz crystal oscillator which displays its fundamental frequency

A frequency-determining unit for a transmitter or receiver

A display that uses a glowing liquid to remain brightly lit in dim light

E6E09: Which of the following must be done to insure that a crystal oscillator provides the frequency specified by the crystal manufacturer?

Provide the crystal with a specified parallel inductance

Bias the crystal at a specified voltage

Bias the crystal at a specified current

E6F09: What is the efficiency of a photovoltaic cell?

The output RF power divided by the input dc power

The effective payback period

The open-circuit voltage divided by the short-circuit current under full illumination

E7A15: What is a D flip-flop?

A differential class D amplifier used as a flip-flop circuit

A dynamic memory storage element

A flip-flop whose output is capable of both positive and negative voltage excursions

E7B10: In Figure E7-1, what is the purpose of R1 and R2?

Load resistors

Self bias

Feedback

E7C13: What is one advantage of a Pi matching network over an L matching network consisting of a single inductor and a single capacitor?

L networks cannot perform impedance transformation

Pi networks have fewer components

Pi networks are designed for balanced input and output

E7D03: What device is typically used as a stable reference voltage in a linear voltage regulator?

A tunnel diode

An SCR

A varactor diode

E7E07: What is meant by the term baseband in radio communications?

The lowest frequency band that the transmitter or receiver covers

The unmodulated bandwidth of the transmitted signal

The basic oscillator frequency in an FM transmitter that is multiplied to increase the deviation and carrier frequency

E7F11: What is an advantage of a period-measuring frequency counter over a direct-count type?

It can run on battery power for remote measurements

It does not require an expensive high-precision time base

It can directly measure the modulation index of an FM transmitter

E7G12: What is an integrated circuit operational amplifier?

A digital audio amplifier whose characteristics are determined by components external to the amplifier

An amplifier used to increase the average output of frequency modulated amateur signals to the legal limit

An RF amplifier used in the UHF and microwave regions

E7H06: Which of the following oscillator circuits are commonly used in VFOs?

Pierce and Zener

Armstrong and deForest

Negative feedback and balanced feedback

E8A09: What type of waveform is produced by human speech?

Sinusoidal

Logarithmic

Trapezoidal

E8B07: When using a pulse-width modulation system, why is the transmitter's peak power greater than its average power?

The signal reaches peak amplitude only when voice modulated

The signal reaches peak amplitude only when voltage spikes are generated within the modulator

The signal reaches peak amplitude only when the pulses are also amplitude modulated

E8C10: 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?

Direct sequence

Time-domain frequency modulation

Frequency compandored spread-spectrum

E8D02: What is the relationship between the peak-to-peak voltage and the peak voltage amplitude of a symmetrical waveform?

0.707:1

1.414:1

4:1

E9A09: What is meant by antenna bandwidth?

Antenna length divided by the number of elements

The angle between the half-power radiation points

The angle formed between two imaginary lines drawn through the element ends

E9B07: How does the total amount of radiation emitted by a directional gain antenna compare with the total amount of radiation emitted from an isotropic antenna, assuming each is driven by the same amount of power?

The total amount of radiation from the directional antenna is increased by the gain of the antenna

The total amount of radiation from the directional antenna is stronger by its front to back ratio

The radiation from the isotropic antenna is 2.15 dB stronger than that from the directional antenna

E9C08: What is the elevation angle of peak response in the antenna radiation pattern shown in Figure E9-2?

45 degrees

75 degrees

25 degrees

E9D11: What is the function of a loading coil as used with an HF mobile antenna?

To increase the SWR bandwidth

To lower the losses

To lower the Q

E9E03: What is the name of the matching system that uses a section of transmission line connected in parallel with the feed line at the feed point?

The gamma match

The delta match

The omega match

E9F15: What impedance does a 1/2-wavelength transmission line present to a generator when the line is open at the far end?

Very low impedance

The same as the characteristic impedance of the line

The same as the output impedance of the generator

E9G03: Which of the following is often determined using a Smith chart?

Beam headings and radiation patterns

Satellite azimuth and elevation bearings

Trigonometric functions

E9H06: What is the triangulation method of direction finding?

The geometric angle of sky waves from the source are used to determine its position

A fixed receiving station plots three headings from the signal source on a map

A fixed receiving station uses three different antennas to plot the location of the signal source