E0A07: How may dangerous levels of carbon monoxide from an emergency generator be detected?

By the odor

Any ordinary smoke detector can be used

By the yellowish appearance of the gas

E1A06: Which of the following describes the rules for operation on the 60 meter band?

Working DX is not permitted

Operation is restricted to LSB

All of these choices are correct

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

60 Hz

170 Hz

1.5 kHz

E1C02: What is meant by automatic control of a station?

A station operating with its output power controlled automatically

Remotely controlling a station's antenna pattern through a directional control link

The use of a control link between a control point and a locally controlled station

E1D01: What is the definition of the term telemetry?

Two-way radiotelephone transmissions in excess of 1000 feet

Two-way single channel transmissions of data

One-way transmission that initiates, modifies, or terminates the functions of a device at a distance

E1E11: What must the VE team do if an examinee scores a passing grade on all examination elements needed for an upgrade or new license?

Photocopy all examination documents and forward them to the FCC for processing

Issue the examinee the new or upgrade license

All these choices are correct

E1F08: Which of the following types of amateur station communications are prohibited?

Communications that have a political content, except as allowed by the Fairness Doctrine

Communications that have a religious content

Communications in a language other than English

E2A06: On what band would a satellite receive signals if it were operating in mode U/V?

144-146 MHz

50.0-50.2 MHz

29.5 to 29.7 MHz

E2B13: How many lines are commonly used in each frame on an amateur slow-scan color television picture?

30 to 60

60 or 100

180 or 360

E2C09: How does the spread-spectrum technique of frequency hopping work?

If interference is detected by the receiver it will signal the transmitter to change frequencies

If interference is detected by the receiver it will signal the transmitter to wait until the frequency is clear

A pseudo-random binary bit stream is used to shift the phase of an RF carrier very rapidly in a particular sequence

E2D07: Which of the following digital protocols is used by APRS?

PACTOR

802.11

AMTOR

E2E12: Which type of digital communication does not support keyboard-to-keyboard operation?

RTTY

PSK31

MFSK

E3A09: Which of the following frequency ranges is well suited for meteor-scatter communications?

1.8 - 1.9 MHz

10 - 14 MHz

220 - 450 MHz

E3B09: At what time of day is gray-line propagation most likely to occur?

When the Sun is directly above the location of the transmitting station

When the Sun is directly overhead at the middle of the communications path between the two stations

When the Sun is directly above the location of the receiving station

E3C14: Why does the radio-path horizon distance exceed the geometric horizon?

E-region skip

D-region skip

Downward bending due to aurora refraction

E4A09: Which of the following describes a good method for measuring the intermodulation distortion of your own PSK signal?

Multiply the ALC level on the transmitter during a normal transmission by the average power output

Use an RF voltmeter coupled to the transmitter output using appropriate isolation to prevent damage to the meter

All of these choices are correct

E4B06: How much power is being absorbed by the load when a directional power meter connected between a transmitter and a terminating load reads 100 watts forward power and 25 watts reflected power?

100 watts

125 watts

25 watts

E4C11: Which of the following is a desirable amount of selectivity for an amateur SSB phone receiver?

1 kHz

4.2 kHz

4.8 kHz

E4D09: What is the purpose of the preselector in a communications receiver?

To store often-used frequencies

To provide a range of AGC time constants

To allow selection of the optimum RF amplifier device

E4E03: Which of the following signals might a receiver noise blanker be able to remove from desired signals?

Signals which are constant at all IF levels

Signals which appear at one IF but not another

Signals which have a sharply peaked frequency distribution

E5A08: What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?

The voltage leads the current by 90 degrees

The current leads the voltage by 90 degrees

The voltage and current are 180 degrees out of phase

E5B11: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 50 ohms?

14 degrees with the voltage lagging the current

76 degrees with the voltage lagging the current

76 degrees with the voltage leading the current

E5C14: What coordinate system is often used to display the phase angle of a circuit containing resistance, inductive and/or capacitive reactance?

Maidenhead grid

Faraday grid

Elliptical coordinates

E5D10: How can the true power be determined in an AC circuit where the voltage and current are out of phase?

By dividing the reactive power by the power factor

By dividing the apparent power by the power factor

By multiplying the reactive power times the power factor

E6A06: What is the beta of a bipolar junction transistor?

The frequency at which the current gain is reduced to 1

The breakdown voltage of the base to collector junction

The switching speed of the transistor

E6B12: What is one common use for PIN diodes?

As a constant current source

As a constant voltage source

As a high voltage rectifier

E6C01: What is the recommended power supply voltage for TTL series integrated circuits?

12 volts

1.5 volts

13.6 volts

E6D04: What function does a charge-coupled device (CCD) serve in a modern video camera?

It generates the horizontal pulses needed for electron beam scanning

It focuses the light used to produce a pattern of electrical charges corresponding to the image

It combines audio and video information to produce a composite RF signal

E6E05: Which of the following noise figure values is typical of a low-noise UHF preamplifier?

-10 dB

44 dBm

-20 dBm

E6F06: Which of these materials is affected the most by photoconductivity?

An ordinary metal

A heavy metal

A liquid semiconductor

E7A04: How many flip-flops are required to divide a signal frequency by 4?

1

4

8

E7B18: Which of the following is a characteristic of a grounded-grid amplifier?

High power gain

High filament voltage

Low bandwidth

E7C01: How are the capacitors and inductors of a low-pass filter Pi-network arranged between the network's input and output?

Two inductors are in series between the input and output, and a capacitor is connected between the two inductors and ground

Two capacitors are in series between the input and output and an inductor is connected between the two capacitors and ground

An inductor is connected between the input and ground, another inductor is connected between the output and ground, and a capacitor is connected between the input and output

E7D10: What is the purpose of C3 in the circuit shown in Figure E7-3?

It provides brute force filtering of the output

It provides fixed bias for Q1

It clips the peaks of the ripple

E7E11: Which of the following types of detector is well suited for demodulating SSB signals?

Discriminator

Phase detector

Phase comparator

E7F09: What is the purpose of a frequency counter?

To generate a series of reference signals at known frequency intervals

To display all frequency components of a transmitted signal

To provide a signal source at a very accurate frequency

E7G06: Which of the following is the most appropriate use of an op-amp active filter?

As a high-pass filter used to block RFI at the input to receivers

As a low-pass filter used between a transmitter and a transmission line

For smoothing power-supply output

E7H04: How is positive feedback supplied in a Colpitts oscillator?

Through a tapped coil

Through link coupling

Through a neutralizing capacitor

E8A03: What type of wave is made up of sine waves of a given fundamental frequency plus all its harmonics?

A square wave

A sine wave

A cosine wave

E8B01: What is the term for the ratio between the frequency deviation of an RF carrier wave, and the modulating frequency of its corresponding FM-phone signal?

FM compressibility

Quieting index

Percentage of modulation

E8C06: What is the necessary bandwidth of a 170-hertz shift, 300-baud ASCII transmission?

0.1 Hz

0.3 kHz

1.0 kHz

E8D16: What is the RMS value of a 340-volt peak-to-peak pure sine wave?

170V AC

240V AC

300V AC

E9A03: Which of the following antennas has no gain in any direction?

Quarter-wave vertical

Yagi

Half-wave dipole

E9B08: How can the approximate beamwidth in a given plane of a directional antenna be determined?

Measure the ratio of the signal strengths of the radiated power lobes from the front and rear of the antenna

Draw two imaginary lines through the ends of the elements and measure the angle between the lines

Measure the ratio of the signal strengths of the radiated power lobes from the front and side of the antenna

E9C12: When constructing a Beverage antenna, which of the following factors should be included in the design to achieve good performance at the desired frequency?

Its overall length must not exceed 1/4 wavelength

It must be mounted more than 1 wavelength above ground

It should be configured as a four-sided loop

E9D10: What is the approximate feed point impedance at the center of a two-wire folded dipole antenna?

72 ohms

50 ohms

450 ohms

E9E06: 3-element Yagi?

Pi network

Pi-L network

Parallel-resonant tank

E9F09: What is the approximate physical length of a solid polyethylene dielectric coaxial transmission line that is electrically one-quarter wavelength long at 7.2 MHz?

10 meters

24 meters

50 meters

E9G07: On the Smith chart shown in Figure E9-3, what is the only straight line shown?

The reactance axis

The current axis

The voltage axis

E9H02: What is the effective radiated power relative to a dipole of a repeater station with 200 watts transmitter power output, 4-dB feed line loss, 3.2-dB duplexer loss, 0.8-dB circulator loss and 10-dBd antenna gain?

2000 watts

126 watts

300 watts