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
E1A13: Who must be in physical control of the station apparatus of an amateur station aboard any vessel or craft that is documented or registered in the United States?

Only a person with an FCC Marine Radio
Any person holding an FCC-issued amateur license or who is authorized for alien reciprocal operation
Only a person named in an amateur station license grant
Any person named in an amateur station license grant or a person holding an unrestricted Radiotelephone Operator Permit
E1B01: Which of the following constitutes a spurious emission?

An amateur station transmission made at random without the proper call sign identification
A signal transmitted to prevent its detection by any station other than the intended recipient
Any transmitted bogus signal that interferes with another licensed radio station
An emission outside its necessary bandwidth that can be reduced or eliminated without affecting the information transmitted
E1C05: When may an automatically controlled station originate third party communications?

Never
Only when transmitting an RTTY or data emissions
When specifically agreed upon by the sending and receiving stations
When approved by the National Telecommunication and Information Administration
E1D04: What is an Earth station in the amateur satellite service?

An amateur station within 50 km of the Earth's surface intended for communications with amateur stations by means of objects in space
An amateur station that is not able to communicate using amateur satellites
An amateur station that transmits telemetry consisting of measurement of upper atmosphere data from space
Any amateur station on the surface of the Earth
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
Three VEs must certify that the examinee is qualified for the license grant and that they have complied with the administering VE requirements
Issue the examinee the new or upgrade license
All these choices are correct
E1F06: What is the National Radio Quiet Zone?

An area in Puerto Rico surrounding the Aricebo Radio Telescope
An area in New Mexico surrounding the White Sands Test Area
An area surrounding the National Radio Astronomy Observatory
An area in Florida surrounding Cape Canaveral
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
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
E2C04: On which of the following frequencies is an amateur radio contest contact generally discouraged?

3.525 MHz
14.020 MHz
28.330 MHz
146.52 MHz
E2D02: What is the definition of baud?

The number of data symbols transmitted per second
The number of characters transmitted per second
The number of characters transmitted per minute
The number of words transmitted per minute
E2E05: How does ARQ accomplish error correction?

Special binary codes provide automatic correction
Special polynomial codes provide automatic correction
If errors are detected, redundant data is substituted
If errors are detected, a retransmission is requested
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
E3C14: Why does the radio-path horizon distance exceed the geometric horizon?

E-region skip
D-region skip
Downward bending due to aurora refraction
Downward bending due to density variations in the atmosphere
E4A01: How does a spectrum analyzer differ from an oscilloscope?

A spectrum analyzer measures ionospheric reflection; an oscilloscope displays electrical signals
A spectrum analyzer displays the peak amplitude of signals; an oscilloscope displays the average amplitude of signals
A spectrum analyzer displays signals in the frequency domain; an oscilloscope displays signals in the time domain
A spectrum analyzer displays radio frequencies; an oscilloscope displays audio frequencies
E4B04: If a frequency counter with a specified accuracy of +/- 0.1 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?

14.652 Hz
0.1 MHz
1.4652 Hz
1.4652 kHz
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
E4E13: What might be the cause of a loud roaring or buzzing AC line interference that comes and goes at intervals?

Arcing contacts in a thermostatically controlled device
A defective doorbell or doorbell transformer inside a nearby residence
A malfunctioning illuminated advertising display
All of these choices are correct
E5A05: What is the magnitude of the current at the input of a series RLC circuit as the frequency goes through resonance?

Minimum
Maximum
R/L
L/R
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
E5C07: In polar coordinates, what is the impedance of a network comprised of a 100-ohm-reactance capacitor in parallel with a 100-ohm resistor?

31 ohms at an angle of -15 degrees
51 ohms at an angle of -25 degrees
71 ohms at an angle of -45 degrees
91 ohms at an angle of -65 degrees
E5D18: How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500 VA?

704 W
355 W
252 W
1.42 mW
E6A17: What are the names of the three terminals of a field-effect transistor?

Gate 1, gate 2, drain
Emitter, base, collector
Emitter, base 1, base 2
Gate, drain, source
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
E6C10: In Figure E6-5, what is the schematic symbol for a NOR gate?

1
2
3
4
E6D06: What core material property determines the inductance of a toroidal inductor?

Thermal impedance
Resistance
Reactivity
Permeability
E6E01: What is a crystal lattice filter?

A power supply filter made with interlaced quartz crystals
An audio filter made with four quartz crystals that resonate at 1-kHz intervals
A filter with wide bandwidth and shallow skirts made using quartz crystals
A filter with narrow bandwidth and steep skirts made using quartz crystals
E6F11: Which of the following is the approximate open-circuit voltage produced by a fully-illuminated silicon photovoltaic cell?

0.1 V
0.5 V
1.5 V
12 V
E7A08: What logical operation does an OR gate perform?

It produces a logic "1" at its output if any or all inputs are logic "1"
It produces a logic "0" at its output if all inputs are logic "1"
It only produces a logic "0" at its output when all inputs are logic "1"
It produces a logic "1" at its output if all inputs are logic "0"
E7B18: Which of the following is a characteristic of a grounded-grid amplifier?

High power gain
High filament voltage
Low input impedance
Low bandwidth
E7C10: Which of the following filters would be the best choice for use in a 2 meter repeater duplexer?

A crystal filter
A cavity filter
A DSP filter
An L-C 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
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
E7F09: What is the purpose of a frequency counter?

To provide a digital representation of the frequency of a signal
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
E7G10: What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 1800 ohms and RF is 68 kilohms?

1
0.03
38
76
E7H13: What is the capture range of a phase-locked loop circuit?

The frequency range over which the circuit can lock
The voltage range over which the circuit can lock
The input impedance range over which the circuit can lock
The range of time it takes the circuit to lock
E8A13: What is an advantage of using digital signals instead of analog signals to convey the same information?

Less complex circuitry is required for digital signal generation and detection
Digital signals always occupy a narrower bandwidth
Digital signals can be regenerated multiple times without error
All of these choices are correct
E8B05: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus-or-minus 5 kHz when the maximum modulation frequency is 3 kHz?

60
0.167
0.6
1.67
E8C11: What spread-spectrum communications technique uses a high speed binary bit stream to shift the phase of an RF carrier?

Frequency hopping
Direct sequence
Binary phase-shift keying
Phase compandored spread-spectrum
E8D16: What is the RMS value of a 340-volt peak-to-peak pure sine wave?

120V AC
170V AC
240V AC
300V 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
E9B09: What type of computer program technique is commonly used for modeling antennas?

Graphical analysis
Method of Moments
Mutual impedance analysis
Calculus differentiation with respect to physical properties
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
E9D01: How does the gain of an ideal parabolic dish antenna change when the operating frequency is doubled?

Gain does not change
Gain is multiplied by 0.707
Gain increases by 6 dB
Gain increases by 3 dB
E9E04: What is the purpose of the series capacitor in a gamma-type antenna matching network?

To provide DC isolation between the feed line and the antenna
To cancel the inductive reactance of the matching network
To provide a rejection notch to prevent the radiation of harmonics
To transform the antenna impedance to a higher value
E9F02: Which of the following determines the velocity factor of a transmission line?

The termination impedance
The line length
Dielectric materials used in the line
The center conductor resistivity
E9G09: What third family of circles is often added to a Smith chart during the process of solving problems?

Standing-wave ratio circles
Antenna-length circles
Coaxial-length circles
Radiation-pattern circles
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