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
E1A04: With your transceiver displaying the carrier frequency of phone signals, you hear a DX station calling CQ on 3.601 MHz LSB. Is it legal to return the call using lower sideband on the same frequency?

Yes, because the DX station initiated the contact
Yes, because the displayed frequency is within the 75 meter phone band segment
No, my sidebands will extend beyond the edge of the phone band segment
No, USA stations are not permitted to use phone emissions below 3.610 MHz
E1B02: Which of the following factors might cause the physical location of an amateur station apparatus or antenna structure to be restricted?

The location is near an area of political conflict
The location is of geographical or horticultural importance
The location is in an ITU zone designated for coordination with one or more foreign governments
The location is of environmental importance or significant in American history, architecture, or culture
E1C04: When may an automatically controlled station retransmit third party communications?

Never
Only when transmitting RTTY or data emissions
When specifically agreed upon by the sending and receiving stations
When approved by the National Telecommunication and Information Administration
E1D09: Which amateur service UHF bands have frequencies available for a space station?

70 cm
70 cm, 23 cm, 13 cm
70 cm and 33 cm
33 cm and 13 cm
E1E06: Who is responsible for the proper conduct and necessary supervision during an amateur operator license examination session?

The VEC coordinating the session
The FCC
Each administering VE
The VE session manager
E1F02: Which of the following operating arrangements allows an FCC-licensed US citizen to operate in many European countries, and alien amateurs from many European countries to operate in the US?

CEPT agreement
IARP agreement
ITU reciprocal license
All of these choices are correct
E2A06: On what band would a satellite receive signals if it were operating in mode U/V?

435-438 MHz
144-146 MHz
50.0-50.2 MHz
29.5 to 29.7 MHz
E2B08: Which of the following is a common method of transmitting accompanying audio with amateur fast-scan television?

Frequency-modulated sub-carrier
A separate VHF or UHF audio link
Frequency modulation of the video carrier
All of these choices are correct
E2C12: What might help to restore contact when DX signals become too weak to copy across an entire HF band a few hours after sunset?

Switch to a higher frequency HF band
Switch to a lower frequency HF band
Wait 90 minutes or so for the signal degradation to pass
Wait 24 hours before attempting another communication on the band
E2D06: Which of the following is a commonly used 2-meter APRS frequency?

144.39 MHz
144.20 MHz
145.02 MHz
146.52 MHz
E2E09: Which of the following HF digital modes uses variable-length coding for bandwidth efficiency?

RTTY
PACTOR
MT63
PSK31
E3A05: Which of the following describes a method of establishing EME contacts?

Time synchronous transmissions with each station alternating
Storing and forwarding digital messages
Judging optimum transmission times by monitoring beacons from the Moon
High speed CW identification to avoid fading
E3B04: What type of propagation is probably occurring if an HF beam antenna must be pointed in a direction 180 degrees away from a station to receive the strongest signals?

Long-path
Sporadic-E
Transequatorial
Auroral
E3C09: Which of the following is usually responsible for causing VHF signals to propagate for hundreds of miles?

D-region absorption
Faraday rotation
Tropospheric ducting
Ground wave
E4A05: Which of the following test instruments is used to display intermodulation distortion products in an SSB transmission?

A wattmeter
A spectrum analyzer
A logic analyzer
A time-domain reflectometer
E4B01: Which of the following factors most affects the accuracy of a frequency counter?

Input attenuator accuracy
Time base accuracy
Decade divider accuracy
Temperature coefficient of the logic
E4C08: How might lowering the noise figure affect receiver performance?

It would reduce the signal to noise ratio
It would improve weak signal sensitivity
It would reduce bandwidth
It would increase bandwidth
E4D12: What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?

Desensitization
Quieting
Cross-modulation interference
Squelch gain rollback
E4E08: What type of signal is picked up by electrical wiring near a radio antenna?

A common-mode signal at the frequency of the radio transmitter
An electrical-sparking signal
A differential-mode signal at the AC power line frequency
Harmonics of the AC power line frequency
E5A12: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 3.7 MHz and a Q of 118?

436.6 kHz
218.3 kHz
31.4 kHz
15.7 kHz
E5B08: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 100 ohms, R is 100 ohms, and XL is 75 ohms?

14 degrees with the voltage lagging the current
14 degrees with the voltage leading the current
76 degrees with the voltage leading the current
76 degrees with the voltage lagging the current
E5C21: Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and a 19 picofarad capacitor at 21.200 MHz?

Point 1
Point 3
Point 7
Point 8
E5D10: How can the true power be determined in an AC circuit where the voltage and current are out of phase?

By multiplying the apparent power times the power factor
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
E6A13: What do the initials CMOS stand for?

Common Mode Oscillating System
Complementary Mica-Oxide Silicon
Complementary Metal-Oxide Semiconductor
Common Mode Organic Silicon
E6B02: What is an important characteristic of a Schottky diode as compared to an ordinary silicon diode when used as a power supply rectifier?

Much higher reverse voltage breakdown
Controlled reverse avalanche voltage
Enhanced carrier retention time
Less forward voltage drop
E6C13: Which of the following is an advantage of BiCMOS logic?

Its simplicity results in much less expensive devices than standard CMOS
It is totally immune to electrostatic damage
It has the high input impedance of CMOS and the low output impedance of bipolar transistors
All of these choices are correct
E6D01: What is cathode ray tube (CRT) persistence?

The time it takes for an image to appear after the electron beam is turned on
The relative brightness of the display under varying conditions of ambient light
The ability of the display to remain in focus under varying conditions
The length of time the image remains on the screen after the beam is turned off
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
Provide the crystal with a specified parallel capacitance
Bias the crystal at a specified voltage
Bias the crystal at a specified current
E6F10: What is the most common type of photovoltaic cell used for electrical power generation?

Selenium
Silicon
Cadmium Sulfide
Copper oxide
E7A13: What is an SR or RS flip-flop?

A speed-reduced logic device with high power capability
A set/reset flip-flop whose output is low when R is high and S is low, high when S is high and R is low, and unchanged when both inputs are low
A speed-reduced logic device with very low voltage operation capability
A set/reset flip-flop that toggles whenever the T input is pulsed, unless both inputs are high
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
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
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
E7E05: What circuit is added to an FM transmitter to boost the higher audio frequencies?

A de-emphasis network
A heterodyne suppressor
An audio prescaler
A pre-emphasis network
E7F01: What is the purpose of a prescaler circuit?

It converts the output of a JK flip flop to that of an RS flip-flop
It multiplies a higher frequency signal so a low-frequency counter can display the operating frequency
It prevents oscillation in a low-frequency counter circuit
It divides a higher frequency signal so a low-frequency counter can display the input frequency
E7G01: What primarily determines the gain and frequency characteristics of an op-amp RC active filter?

The values of capacitors and resistors built into the op-amp
The values of capacitors and resistors external to the op-amp
The input voltage and frequency of the op-amp's DC power supply
The output voltage and smoothness of the op-amp's DC power supply
E7H05: How is positive feedback supplied in a Pierce oscillator?

Through a tapped coil
Through link coupling
Through a neutralizing capacitor
Through a quartz crystal
E8A11: What is one use for a pulse modulated signal?

Linear amplification
PSK31 data transmission
Multiphase power transmission
Digital data transmission
E8B08: What parameter does the modulating signal vary in a pulse-position modulation system?

The number of pulses per second
The amplitude of the pulses
The duration of the pulses
The time at which each pulse occurs
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
E8D15: Which of the following is a typical value for the RMS voltage at a standard U.S. household electrical power outlet?

120V AC
340V AC
85V AC
170V AC
E9A11: Which of the following choices is a way to improve the efficiency of a ground-mounted quarter-wave vertical antenna?

Install a good radial system
Isolate the coax shield from ground
Shorten the radiating element
Reduce the diameter of the radiating element
E9B11: What is a disadvantage of decreasing the number of wire segments in an antenna model below the guideline of 10 segments per half-wavelength?

Ground conductivity will not be accurately modeled
The resulting design will favor radiation of harmonic energy
The computed feed point impedance may be incorrect
The antenna will become mechanically unstable
E9C01: What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed 180 degrees out of phase?

A cardioid
Omnidirectional
A figure-8 broadside to the axis of the array
A figure-8 oriented along the axis of the array
E9D05: Where should a high-Q loading coil be placed to minimize losses in a shortened vertical antenna?

Near the center of the vertical radiator
As low as possible on the vertical radiator
As close to the transmitter as possible
At a voltage node
E9E05: How must the driven element in a 3-element Yagi be tuned to use a hairpin matching system?

The driven element reactance must be capacitive
The driven element reactance must be inductive
The driven element resonance must be lower than the operating frequency
The driven element radiation resistance must be higher than the characteristic impedance of the transmission line
E9F12: What impedance does a 1/4-wavelength transmission line present to a generator when the line is open at the far end?

The same as the characteristic impedance of the line
The same as the input impedance to the generator
Very high impedance
Very low impedance
E9G10: What do the arcs on a Smith chart represent?

Frequency
SWR
Points with constant resistance
Points with constant reactance
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