Ham Extra License Practice Quiz

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E0A05: What is one of the potential hazards of using microwaves in the amateur radio bands?

Microwaves are ionizing radiation
The high gain antennas commonly used can result in high exposure levels
Microwaves often travel long distances by ionospheric reflection
The extremely high frequency energy can damage the joints of antenna structures
E1A10: If an amateur station is installed aboard a ship or aircraft, what condition must be met before the station is operated?

Its operation must be approved by the master of the ship or the pilot in command of the aircraft
The amateur station operator must agree to not transmit when the main ship or aircraft radios are in use
It must have a power supply that is completely independent of the main ship or aircraft power supply
Its operator must have an FCC Marine or Aircraft endorsement on his or her amateur license
E1B08: What limitations may the FCC place on an amateur station if its signal causes interference to domestic broadcast reception, assuming that the receiver(s) involved are of good engineering design?

The amateur station must cease operation
The amateur station must cease operation on all frequencies below 30 MHz
The amateur station must cease operation on all frequencies above 30 MHz
The amateur station must avoid transmitting during certain hours on frequencies that cause the interference
E1C06: Which of the following statements concerning remotely controlled amateur stations is true?

Only Extra Class operators may be the control operator of a remote station
A control operator need not be present at the control point
A control operator must be present at the control point
Repeater and auxiliary stations may not be remotely controlled
E1D03: What is a telecommand station in the amateur satellite service?

An amateur station located on the Earth's surface for communications with other Earth stations by means of Earth satellites
An amateur station that transmits communications to initiate, modify or terminate functions of a space station
An amateur station located more than 50 km above the Earth's surface
An amateur station that transmits telemetry consisting of measurements of upper atmosphere data from space
E1E08: To which of the following examinees may a VE not administer an examination?

Employees of the VE
Friends of the VE
Relatives of the VE as listed in the FCC rules
All of these choices are correct
E1F10: What is the maximum transmitter power for an amateur station transmitting spread spectrum communications?

1 W
1.5 W
10 W
1.5 kW
E2A01: What is the direction of an ascending pass for an amateur satellite?

From west to east
From east to west
From south to north
From north to south
E2B19: What special operating frequency restrictions are imposed on slow scan TV transmissions?

None; they are allowed on all amateur frequencies
They are restricted to 7.245 MHz, 14.245 MHz, 21.345, MHz, and 28.945 MHz
They are restricted to phone band segments and their bandwidth can be no greater than that of a voice signal of the same modulation type
They are not permitted above 54 MHz
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
E2D07: Which of the following digital protocols is used by APRS?

PACTOR
802.11
AX.25
AMTOR
E2E09: Which of the following HF digital modes uses variable-length coding for bandwidth efficiency?

RTTY
PACTOR
MT63
PSK31
E3A06: What frequency range would you normally tune to find EME signals in the 2 meter band?

144.000 - 144.001 MHz
144.000 - 144.100 MHz
144.100 - 144.300 MHz
145.000 - 145.100 MHz
E3B01: What is transequatorial propagation?

Propagation between two mid-latitude points at approximately the same distance north and south of the magnetic equator
Propagation between any two points located on the magnetic equator
Propagation between two continents by way of ducts along the magnetic equator
Propagation between two stations at the same latitude
E3C12: How does the maximum distance of ground-wave propagation change when the signal frequency is increased?

It stays the same
It increases
It decreases
It peaks at roughly 14 MHz
E4A02: Which of the following parameters would a spectrum analyzer display on the horizontal axis?

SWR
Q
Time
Frequency
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
E4C05: What does a value of -174 dBm/Hz represent with regard to the noise floor of a receiver?

The minimum detectable signal as a function of receive frequency
The theoretical noise at the input of a perfect receiver at room temperature
The noise figure of a 1 Hz bandwidth receiver
The galactic noise contribution to minimum detectable signal
E4D08: What causes intermodulation in an electronic circuit?

Too little gain
Lack of neutralization
Nonlinear circuits or devices
Positive feedback
E4E01: Which of the following types of receiver noise can often be reduced by use of a receiver noise blanker?

Ignition noise
Broadband white noise
Heterodyne interference
All of these choices are correct
E5A13: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 187?

38.1 kHz
76.2 kHz
1.332 kHz
2.665 kHz
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
14 degrees with the voltage leading the current
76 degrees with the voltage lagging the current
76 degrees with the voltage leading the current
E5C18: In polar coordinates, what is the impedance of a series circuit consisting of a resistance of 4 ohms, an inductive reactance of 4 ohms, and a capacitive reactance of 1 ohm?

6.4 ohms at an angle of 53 degrees
5 ohms at an angle of 37 degrees
5 ohms at an angle of 45 degrees
10 ohms at an angle of -51 degrees
E5D08: What type of energy is stored in an electromagnetic or electrostatic field?

Electromechanical energy
Potential energy
Thermodynamic energy
Kinetic energy
E6A11: In Figure E6-2, what is the schematic symbol for a P-channel junction FET?

1
2
3
6
E6B13: What type of bias is required for an LED to emit light?

Reverse bias
Forward bias
Zero bias
Inductive bias
E6C09: In Figure E6-5, what is the schematic symbol for an OR gate?

2
3
4
6
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
E6E10: What is the equivalent circuit of a quartz crystal?

Motional capacitance, motional inductance and loss resistance in series, with a shunt capacitance representing electrode and stray capacitance
Motional capacitance, motional inductance, loss resistance, and a capacitor representing electrode and stray capacitance all in parallel
Motional capacitance, motional inductance, loss resistance, and a capacitor represent electrode and stray capacitance all in series
Motional inductance and loss resistance in series, paralleled with motional capacitance and a capacitor representing electrode and stray capacitance
E6F02: What happens to the conductivity of a photoconductive material when light shines on it?

It increases
It decreases
It stays the same
It becomes unstable
E7A11: What is the name for logic which represents a logic "1" as a high voltage?

Reverse Logic
Assertive Logic
Negative logic
Positive Logic
E7B20: What is a parametric amplifier?

A type of bipolar operational amplifier with excellent linearity derived from use of very high voltage on the collector
A low-noise VHF or UHF amplifier relying on varying reactance for amplification
A high power amplifier for HF application utilizing the Miller effect to increase gain
An audio push-pull amplifier using silicon carbide transistors for extremely low noise
E7C14: Which of these modes is most affected by non-linear phase response in a receiver IF filter?

Meteor Scatter
Single-Sideband voice
Digital
Video
E7D01: What is one characteristic of a linear electronic voltage regulator?

It has a ramp voltage as its output
It eliminates the need for a pass transistor
The control element duty cycle is proportional to the line or load conditions
The conduction of a control element is varied to maintain a constant output voltage
E7E13: Which of the following describes a common means of generating an SSB signal when using digital signal processing?

Mixing products are converted to voltages and subtracted by adder circuits
A frequency synthesizer removes the unwanted sidebands
Emulation of quartz crystal filter characteristics
The quadrature method
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 provides improved resolution of low-frequency signals within a comparable time period
It can directly measure the modulation index of an FM transmitter
E7G09: What will be the output voltage of the circuit shown in Figure E7-4 if R1 is 1000 ohms, RF is 10,000 ohms, and 0.23 volts dc is applied to the input?

0.23 volts
2.3 volts
-0.23 volts
-2.3 volts
E7H06: Which of the following oscillator circuits are commonly used in VFOs?

Pierce and Zener
Colpitts and Hartley
Armstrong and deForest
Negative feedback and balanced feedback
E8A09: What type of waveform is produced by human speech?

Sinusoidal
Logarithmic
Irregular
Trapezoidal
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
Modulation index
E8C05: What is the necessary bandwidth of a 13-WPM international Morse code transmission?

Approximately 13 Hz
Approximately 26 Hz
Approximately 52 Hz
Approximately 104 Hz
E8D03: What input-amplitude parameter is valuable in evaluating the signal-handling capability of a Class A amplifier?

Peak voltage
RMS voltage
Average power
Resting voltage
E9A08: What is meant by antenna gain?

The ratio relating the radiated signal strength of an antenna in the direction of maximum radiation to that of a reference antenna
The ratio of the signal in the forward direction to that in the opposite direction
The ratio of the amount of power radiated by an antenna compared to the transmitter output power
The final amplifier gain minus the transmission-line losses, including any phasing lines present
E9B03: In the antenna radiation pattern shown in Figure E9-1, what is the front-to-side ratio?

12 dB
14 dB
18 dB
24 dB
E9C13: What is the main effect of placing a vertical antenna over an imperfect ground?

It causes increased SWR
It changes the impedance angle of the matching network
It reduces low-angle radiation
It reduces losses in the radiating portion of the antenna
E9D04: Why is it desirable for a ground-mounted satellite communications antenna system to be able to move in both azimuth and elevation?

In order to track the satellite as it orbits the Earth
So the antenna can be pointed away from interfering signals
So the antenna can be positioned to cancel the effects of Faraday rotation
To rotate antenna polarization to match that of the satellite
E9E06: 3-element Yagi?

Pi network
Pi-L network
L network
Parallel-resonant tank
E9F13: What impedance does a 1/4-wavelength transmission line present to a generator when the line is shorted at the far end?

Very high impedance
Very low impedance
The same as the characteristic impedance of the transmission line
The same as the generator output impedance
E9G04: What are the two families of circles and arcs that make up a Smith chart?

Resistance and voltage
Reactance and voltage
Resistance and reactance
Voltage and impedance
E9H12: What is an advantage of using a shielded loop antenna for direction finding?

It automatically cancels ignition noise pickup in mobile installations
It is electro-statically balanced against ground, giving better nulls
It eliminates tracking errors caused by strong out-of-band signals
It allows stations to communicate without giving away their position