Ham Extra License Practice Quiz


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E0A02: When evaluating RF exposure levels from your station at a neighbor's home, what must you do?

Make sure signals from your station are less than the controlled MPE limits
Make sure signals from your station are less than the uncontrolled MPE limits
You need only evaluate exposure levels on your own property
Advise your neighbors of the results of your tests

E1A11: What authorization or licensing is required when operating an amateur station aboard a US-registered vessel in international waters?

Any amateur license with an FCC Marine or Aircraft endorsement
Any FCC-issued amateur license or a reciprocal permit for an alien amateur licensee
Only General class or higher amateur licenses
An unrestricted Radiotelephone Operator Permit

E1B07: Where must the carrier frequency of a CW signal be set to comply with FCC rules for 60 meter operation?

At the lowest frequency of the channel
At the center frequency of the channel
At the highest frequency of the channel
On any frequency where the signal's sidebands are within the channel

E1C07: What is meant by local control?

Controlling a station through a local auxiliary link
Automatically manipulating local station controls
Direct manipulation of the transmitter by a control operator
Controlling a repeater using a portable handheld transceiver

E1D01: What is the definition of the term telemetry?

One-way transmission of measurements at a distance from the measuring instrument
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

E1E01: What is the minimum number of qualified VEs required to administer an Element 4 amateur operator license examination?

5
2
4
3

E1F11: Which of the following best describes one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC certification?

It must produce full legal output when driven by not more than 5 watts of mean RF input power
It must be capable of external RF switching between its input and output networks
It must exhibit a gain of 0 dB or less over its full output range
It must satisfy the FCC's spurious emission standards when operated at the lesser of 1500 watts, or its full output power

E2A11: What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?

A linearly polarized antenna
A circularly polarized antenna
An isotropic antenna
A log-periodic dipole array

E2B06: What is vestigial sideband modulation?

Amplitude modulation in which one complete sideband and a portion of the other are transmitted
A type of modulation in which one sideband is inverted
Narrow-band FM transmission achieved by filtering one sideband from the audio before frequency modulating the carrier
Spread spectrum modulation achieved by applying FM modulation following single sideband amplitude modulation

E2C06: During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?

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

E2D08: Which of the following types of packet frames is used to transmit APRS beacon data?

Unnumbered Information
Disconnect
Acknowledgement
Connect

E2E09: Which of the following HF digital modes uses variable-length coding for bandwidth efficiency?

RTTY
PACTOR
MT63
PSK31

E3A04: What type of receiving system is desirable for EME communications?

Equipment with very wide bandwidth
Equipment with very low dynamic range
Equipment with very low gain
Equipment with very low noise figures

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
Long distance communications at twilight on frequencies less than 15 MHz
Tropospheric propagation on the 2 meter and 70 centimeter bands

E3C04: Which emission mode is best for Aurora propagation?

CW
SSB
FM
RTTY

E4A06: Which of the following could be determined with a spectrum analyzer?

The degree of isolation between the input and output ports of a 2 meter duplexer
Whether a crystal is operating on its fundamental or overtone frequency
The spectral output of a transmitter
All of these choices are correct

E4B11: How should a portable antenna analyzer be connected when measuring antenna resonance and feed point impedance?

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

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

1 kHz
2.4 kHz
4.2 kHz
4.8 kHz

E4D08: What causes intermodulation in an electronic circuit?

Too little gain
Lack of neutralization
Nonlinear circuits or devices
Positive feedback

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 across a wide bandwidth
Signals which appear at one IF but not another
Signals which have a sharply peaked frequency distribution

E5A01: What can cause the voltage across reactances in series to be larger than the voltage applied to them?

Resonance
Capacitance
Conductance
Resistance

E5B04: What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors, all in parallel?

55 seconds
110 seconds
440 seconds
220 seconds

E5C04: In polar coordinates, what is the impedance of a network consisting of a 400-ohm-reactance capacitor in series with a 300-ohm resistor?

240 ohms at an angle of 36.9 degrees
240 ohms at an angle of -36.9 degrees
500 ohms at an angle of 53.1 degrees
500 ohms at an angle of -53.1 degrees

E5D16: What is the power factor of an RL circuit having a 30 degree phase angle between the voltage and the current?

1.73
0.5
0.866
0.577

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

The frequency at which the current gain is reduced to 1
The change in collector current with respect to base current
The breakdown voltage of the base to collector junction
The switching speed of the transistor

E6B10: In Figure E6-3, what is the schematic symbol for a light-emitting diode?

1
5
6
7

E6C08: In Figure E6-5, what is the schematic symbol for a NAND gate?

1
2
3
4

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

It stores photogenerated charges as signals corresponding to pixels
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?

2 dB
-10 dB
44 dBm
-20 dBm

E6F07: What is a solid state relay?

A relay using transistors to drive the relay coil
A device that uses semiconductor devices to implement the functions of an electromechanical relay
A mechanical relay that latches in the on or off state each time it is pulsed
A passive delay line

E7A06: What is a characteristic of a monostable multivibrator?

It switches momentarily to the opposite binary state and then returns, after a set time, to its original state
It is a clock that produces a continuous square wave oscillating between 1 and 0
It stores one bit of data in either a 0 or 1 state
It maintains a constant output voltage, regardless of variations in the input voltage

E7B04: Where on the load line of a Class A common emitter amplifier would bias normally be set?

Approximately half-way between saturation and cutoff
Where the load line intersects the voltage axis
At a point where the bias resistor equals the load resistor
At a point where the load line intersects the zero bias current curve

E7C09: What type of digital signal processing filter might be used to generate an SSB signal?

An adaptive filter
A notch filter
A Hilbert-transform filter
An elliptical filter

E7D12: What is the purpose of R2 in the circuit shown in Figure E7-3?

It provides fixed bias for Q1
It provides fixed bias for D1
It decouples hum from D1
It provides a constant minimum load for Q1

E7E02: What is the function of a reactance modulator?

To produce PM signals by using an electrically variable resistance
To produce AM signals by using an electrically variable inductance or capacitance
To produce AM signals by using an electrically variable resistance
To produce PM signals by using an electrically variable inductance or capacitance

E7F02: Which of the following would be used to reduce a signal's frequency by a factor of ten?

A preamp
A prescaler
A marker generator
A flip-flop

E7G08: How does the gain of an ideal operational amplifier vary with frequency?

It increases linearly with increasing frequency
It decreases linearly with increasing frequency
It decreases logarithmically with increasing frequency
It does not vary with frequency

E7H12: Which of the following is a principal component of a direct digital synthesizer (DDS)?

Phase splitter
Hex inverter
Chroma demodulator
Phase accumulator

E8A05: What would be the most accurate way of measuring the RMS voltage of a complex waveform?

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

E8B04: What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2-kHz modulating frequency?

6000
3
2000
1/3

E8C13: What is one advantage of using JT-65 coding?

Uses only a 65 Hz bandwidth
The ability to decode signals which have a very low signal to noise ratio
Easily copied by ear if necessary
Permits fast-scan TV transmissions over narrow bandwidth

E8D06: What is the advantage of using a peak-reading wattmeter to monitor the output of a SSB phone transmitter?

It is easier to determine the correct tuning of the output circuit
It gives a more accurate display of the PEP output when modulation is present
It makes it easier to detect high SWR on the feed line
It can determine if any flat-topping is present during modulation peaks

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

Quarter-wave vertical
Yagi
Half-wave dipole
Isotropic antenna

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

E9C07: What type of antenna pattern over real ground is shown in Figure E9-2?

Elevation
Azimuth
Radiation resistance
Polarization

E9D03: How does the beamwidth of an antenna vary as the gain is increased?

It increases geometrically
It increases arithmetically
It is essentially unaffected
It decreases

E9E01: What system matches a high-impedance transmission line to a lower impedance antenna by connecting the line to the driven element in two places spaced a fraction of a wavelength each side of element center?

The gamma matching system
The delta matching system
The omega matching system
The stub matching system

E9F01: What is the velocity factor of a transmission line?

The ratio of the characteristic impedance of the line to the terminating impedance
The index of shielding for coaxial cable
The velocity of the wave in the transmission line multiplied by the velocity of light in a vacuum
The velocity of the wave in the transmission line divided by the velocity of light in a vacuum

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
The resistance 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?

317 watts
2000 watts
126 watts
300 watts