Ham Extra License Practice Quiz
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E0A08: What does SAR measure?
Synthetic Aperture Ratio of the human body
Signal Amplification Rating
The rate at which RF energy is absorbed by the body
The rate of RF energy reflected from stationary terrain
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
E1B05: What is the maximum bandwidth for a data emission on 60 meters?
60 Hz
170 Hz
1.5 kHz
2.8 kHz
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
E1D10: Which amateur stations are eligible to be telecommand stations?
Any amateur station designated by NASA
Any amateur station so designated by the space station licensee, subject to the privileges of the class of operator license held by the control operator
Any amateur station so designated by the ITU
All of these choices are correct
E1E10: What must the administering VEs do after the administration of a successful examination for an amateur operator license?
They must collect and send the documents to the NCVEC for grading
They must collect and submit the documents to the coordinating VEC for grading
They must submit the application document to the coordinating VEC according to the coordinating VEC instructions
They must collect and send the documents to the FCC according to instructions
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
E2A02: What is the direction of a descending pass for an amateur satellite?
From north to south
From west to east
From east to west
From south to north
E2B02: How many horizontal lines make up a fast-scan (NTSC) television frame?
30
60
525
1080
E2C11: How should you generally identify your station when attempting to contact a DX station working a pileup or in a contest?
Send your full call sign once or twice
Send only the last two letters of your call sign until you make contact
Send your full call sign and grid square
Send the call sign of the DX station three times, the words this is, then your call sign three times
E2D03: Which of the following digital modes is especially useful for EME communications?
FSK441
PACTOR III
Olivia
JT65
E2E02: What do the letters FEC mean as they relate to digital operation?
Forward Error Correction
First Error Correction
Fatal Error Correction
Final Error Correction
E3A03: When scheduling EME contacts, which of these conditions will generally result in the least path loss?
When the Moon is at perigee
When the Moon is full
When the Moon is at apogee
When the MUF is above 30 MHz
E3B08: What type of HF propagation is probably occurring if radio signals travel along the terminator between daylight and darkness?
Transequatorial
Sporadic-E
Long-path
Gray-line
E3C02: What is the cause of Aurora activity?
The interaction between the solar wind and the Van Allen belt
A low sunspot level combined with tropospheric ducting
The interaction of charged particles from the Sun with the Earth's magnetic field and the ionosphere
Meteor showers concentrated in the northern latitudes
E4A02: Which of the following parameters would a spectrum analyzer display on the horizontal axis?
SWR
Q
Time
Frequency
E4B08: Which of the following is a characteristic of a good DC voltmeter?
High reluctance input
Low reluctance input
High impedance input
Low impedance input
E4C10: Which of the following is a desirable amount of selectivity for an amateur RTTY HF receiver?
100 Hz
300 Hz
6000 Hz
2400 Hz
E4D04: Which of the following may reduce or eliminate intermodulation interference in a repeater caused by another transmitter operating in close proximity?
A band-pass filter in the feed line between the transmitter and receiver
A properly terminated circulator at the output of the transmitter
A Class C final amplifier
A Class D final amplifier
E4E05: How can noise from an electric motor be suppressed?
By installing a high pass filter in series with the motor's power leads
By installing a brute-force AC-line filter in series with the motor leads
By installing a bypass capacitor in series with the motor leads
By using a ground-fault current interrupter in the circuit used to power the motor
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
E5B10: What is the relationship between the current through an inductor and the voltage across an inductor?
Voltage leads current by 90 degrees
Current leads voltage by 90 degrees
Voltage and current are 180 degrees out of phase
Voltage and current are in phase
E5C08: In polar coordinates, what is the impedance of a network comprised of a 300-ohm-reactance inductor in series with a 400-ohm resistor?
400 ohms at an angle of 27 degrees
500 ohms at an angle of 37 degrees
500 ohms at an angle of 47 degrees
700 ohms at an angle of 57 degrees
E5D14: What is reactive power?
Wattless, nonproductive power
Power consumed in wire resistance in an inductor
Power lost because of capacitor leakage
Power consumed in circuit Q
E6A04: What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?
Insulator impurity
N-type impurity
Acceptor impurity
Donor impurity
E6B03: What special type of diode is capable of both amplification and oscillation?
Point contact
Zener
Tunnel
Junction
E6C07: In Figure E6-5, what is the schematic symbol for an AND gate?
1
2
3
4
E6D10: What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?
Toroidal cores confine most of the magnetic field within the core material
Toroidal cores make it easier to couple the magnetic energy into other components
Toroidal cores exhibit greater hysteresis
Toroidal cores have lower Q characteristics
E6E07: Which of the following techniques is typically used to construct a MMIC-based microwave amplifier?
Ground-plane construction
Microstrip construction
Point-to-point construction
Wave-soldering construction
E6F12: What absorbs the energy from light falling on a photovoltaic cell?
Protons
Photons
Electrons
Holes
E7A01: Which of the following is a bistable circuit?
An "AND" gate
An "OR" gate
A flip-flop
A clock
E7B05: What can be done to prevent unwanted oscillations in an RF power amplifier?
Tune the stage for maximum SWR
Tune both the input and output for maximum power
Install parasitic suppressors and/or neutralize the stage
Use a phase inverter in the output filter
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
E7D08: What type of circuit is shown in Figure E7-3?
Switching voltage regulator
Grounded emitter amplifier
Linear voltage regulator
Emitter follower
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
E7F04: What additional circuitry must be added to a 100-kHz crystal-controlled marker generator so as to provide markers at 50 and 25 kHz?
An emitter-follower
Two frequency multipliers
Two flip-flops
A voltage divider
E7G03: Which of the following is an advantage of using an op-amp instead of LC elements in an audio filter?
Op-amps are more rugged
Op-amps are fixed at one frequency
Op-amps are available in more varieties than are LC elements
Op-amps exhibit gain rather than insertion loss
E7H03: How is positive feedback supplied in a Hartley oscillator?
Through a tapped coil
Through a capacitive divider
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 sawtooth wave
A square wave
A sine wave
A cosine wave
E8B10: Which of these methods can be used to combine several separate analog information streams into a single analog radio frequency signal?
Frequency shift keying
A diversity combiner
Frequency division multiplexing
Pulse compression
E8C04: What technique is used to minimize the bandwidth requirements of a PSK31 signal?
Zero-sum character encoding
Reed-Solomon character encoding
Use of sinusoidal data pulses
Use of trapezoidal data pulses
E8D12: What is the peak voltage of a sinusoidal waveform if an RMS-reading voltmeter reads 34 volts?
123 volts
96 volts
55 volts
48 volts
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
E9B10: What is the principle of a Method of Moments analysis?
A wire is modeled as a series of segments, each having a uniform value of current
A wire is modeled as a single sine-wave current generator
A wire is modeled as a series of points, each having a distinct location in space
A wire is modeled as a series of segments, each having a distinct value of voltage across it
E9C08: What is the elevation angle of peak response in the antenna radiation pattern shown in Figure E9-2?
45 degrees
75 degrees
7.5 degrees
25 degrees
E9D02: How can linearly polarized Yagi antennas be used to produce circular polarization?
Stack two Yagis, fed 90 degrees out of phase, to form an array with the respective elements in parallel planes
Stack two Yagis, fed in phase, to form an array with the respective elements in parallel planes
Arrange two Yagis perpendicular to each other with the driven elements at the same point on the boom and fed 90 degrees out of phase
Arrange two Yagis collinear to each other, with the driven elements fed 180 degrees out of phase
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
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
6.9 meters
24 meters
50 meters
E9G11: How are the wavelength scales on a Smith chart calibrated?
In fractions of transmission line electrical frequency
In fractions of transmission line electrical wavelength
In fractions of antenna electrical wavelength
In fractions of antenna electrical frequency
E9H01: What is the effective radiated power relative to a dipole of a repeater station with 150 watts transmitter power output, 2-dB feed line loss, 2.2-dB duplexer loss and 7-dBd antenna gain?
1977 watts
78.7 watts
420 watts
286 watts
