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
E1A07: What is the only amateur band where transmission on specific channels rather than a range of frequencies is permitted?

12 meter band
17 meter band
30 meter band
60 meter band
E1B09: Which amateur stations may be operated in RACES?

Only those club stations licensed to Amateur Extra class operators
Any FCC-licensed amateur station except a Technician class operator's station
Any FCC-licensed amateur station certified by the responsible civil defense organization for the area served
Any FCC-licensed amateur station participating in the Military Affiliate Radio System (MARS)
E1C03: How do the control operator responsibilities of a station under automatic control differ from one under local control?

Under local control there is no control operator
Under automatic control the control operator is not required to be present at the control point
Under automatic control there is no control operator
Under local control a control operator is not required to be present at a control point
E1D07: Which amateur service HF bands have frequencies authorized to space stations?

Only 40m, 20m, 17m, 15m, 12m and 10m
Only 40m, 20m, 17m, 15m and 10m bands
40m, 30m, 20m, 15m, 12m and 10m bands
All HF bands
E1E03: What is a Volunteer Examiner Coordinator?

A person who has volunteered to administer amateur operator license examinations
A person who has volunteered to prepare amateur operator license examinations
An organization that has entered into an agreement with the FCC to coordinate amateur operator license examinations
The person who has entered into an agreement with the FCC to be the VE session manager
E1F03: Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?

It was purchased in used condition from an amateur operator and is sold to another amateur operator for use at that operator's station
The equipment dealer assembled it from a kit
It was imported from a manufacturer in a country that does not require certification of RF power amplifiers
It was imported from a manufacturer in another country, and it was certificated by that country's government
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
E2B09: What hardware, other than a receiver with SSB capability and a suitable computer, is needed to decode SSTV using Digital Radio Mondiale (DRM)?

A special IF converter
A special front end limiter
A special notch filter to remove synchronization pulses
No other hardware is needed
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
E2D08: Which of the following types of packet frames is used to transmit APRS beacon data?

Unnumbered Information
Disconnect
Acknowledgement
Connect
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
E3A02: What characterizes libration fading of an Earth-Moon-Earth signal?

A slow change in the pitch of the CW signal
A fluttery irregular fading
A gradual loss of signal as the Sun rises
The returning echo is several Hertz lower in frequency than the transmitted signal
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
E3C07: How does the radiation pattern of a horizontally polarized 3-element beam antenna vary with its height above ground?

The main lobe takeoff angle increases with increasing height
The main lobe takeoff angle decreases with increasing height
The horizontal beam width increases with height
The horizontal beam width decreases with height
E4A09: Which of the following describes a good method for measuring the intermodulation distortion of your own PSK signal?

Transmit into a dummy load, receive the signal on a second receiver, and feed the audio into the sound card of a computer running an appropriate PSK program
Multiply the ALC level on the transmitter during a normal transmission by the average power output
Use an RF voltmeter coupled to the transmitter output using appropriate isolation to prevent damage to the meter
All of these choices are correct
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
E4C09: Which of the following choices is a good reason for selecting a high frequency for the design of the IF in a conventional HF or VHF communications receiver?

Fewer components in the receiver
Reduced drift
Easier for front-end circuitry to eliminate image responses
Improved receiver noise figure
E4D07: Which of the following describes the most significant effect of an off-frequency signal when it is causing cross-modulation interference to a desired signal?

A large increase in background noise
A reduction in apparent signal strength
The desired signal can no longer be heard
The off-frequency unwanted signal is heard in addition to the desired signal
E4E04: How can conducted and radiated noise caused by an automobile alternator be suppressed?

By installing filter capacitors in series with the DC power lead and by installing a blocking capacitor in the field lead
By installing a noise suppression resistor and a blocking capacitor in both leads
By installing a high-pass filter in series with the radio's power lead and a low-pass filter in parallel with the field lead
By connecting the radio's power leads directly to the battery and by installing coaxial capacitors in line with the alternator leads
E5A17: What is the resonant frequency of a parallel RLC circuit if R is 47 ohms, L is 25 microhenrys and C is 10 picofarads?

10.1 MHz
63.2 MHz
10.1 kHz
63.2 kHz
E5B07: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms?

68.2 degrees with the voltage leading the current
14.0 degrees with the voltage leading the current
14.0 degrees with the voltage lagging the current
68.2 degrees with the voltage lagging the current
E5C13: What coordinate system is often used to display the resistive, inductive, and/or capacitive reactance components of an impedance?

Maidenhead grid
Faraday grid
Elliptical coordinates
Rectangular coordinates
E5D03: What device is used to store electrical energy in an electrostatic field?

A battery
A transformer
A capacitor
An inductor
E6A07: In Figure E6-1, what is the schematic symbol for a PNP transistor?

1
2
4
5
E6B04: What type of semiconductor device is designed for use as a voltage-controlled capacitor?

Varactor diode
Tunnel diode
Silicon-controlled rectifier
Zener diode
E6C08: In Figure E6-5, what is the schematic symbol for a NAND gate?

1
2
3
4
E6D13: What type of CRT deflection is better when high-frequency waveforms are to be displayed on the screen?

Electromagnetic
Tubular
Radar
Electrostatic
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
E6F08: Why are optoisolators often used in conjunction with solid state circuits when switching 120 VAC?

Optoisolators provide a low impedance link between a control circuit and a power circuit
Optoisolators provide impedance matching between the control circuit and power circuit
Optoisolators provide a very high degree of electrical isolation between a control circuit and the circuit being switched
Optoisolators eliminate the effects of reflected light in the control circuit
E7A14: What is a JK flip-flop?

A flip-flop similar to an RS except that it toggles when both J and K are high
A flip-flop utilizing low power, low temperature Joule-Kelvin devices
A flip-flop similar to a D flip-flop except that it triggers on the negative clock edge
A flip-flop originally developed in Japan and Korea which has very low power consumption
E7B07: Which of the following is a likely result when a Class C amplifier is used to amplify a single-sideband phone signal?

Reduced intermodulation products
Increased overall intelligibility
Signal inversion
Signal distortion and excessive bandwidth
E7C13: What is one advantage of a Pi matching network over an L matching network consisting of a single inductor and a single capacitor?

The Q of Pi networks can be varied depending on the component values chosen
L networks cannot perform impedance transformation
Pi networks have fewer components
Pi networks are designed for balanced input and output
E7D05: Which of the following types of linear voltage regulator places a constant load on the unregulated voltage source?

A constant current source
A series regulator
A shunt current source
A shunt regulator
E7E01: Which of the following can be used to generate FM phone emissions?

A balanced modulator on the audio amplifier
A reactance modulator on the oscillator
A reactance modulator on the final amplifier
A balanced modulator on the oscillator
E7F10: What alternate method of determining frequency, other than by directly counting input pulses, is used by some counters?

GPS averaging
Period measurement plus mathematical computation
Prescaling
D/A conversion
E7G12: What is an integrated circuit operational amplifier?

A high-gain, direct-coupled differential amplifier with very high input and very low output impedance
A digital audio amplifier whose characteristics are determined by components external to the amplifier
An amplifier used to increase the average output of frequency modulated amateur signals to the legal limit
An RF amplifier used in the UHF and microwave regions
E7H01: What are three oscillator circuits used in Amateur Radio equipment?

Taft, Pierce and negative feedback
Pierce, Fenner and Beane
Taft, Hartley and Pierce
Colpitts, Hartley and Pierce
E8A02: What type of wave has a rise time significantly faster than its fall time (or vice versa)?

A cosine wave
A square wave
A sawtooth wave
A sine 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
E8C07: What is the necessary bandwidth of a 4800-Hz frequency shift, 9600-baud ASCII FM transmission?

15.36 kHz
9.6 kHz
4.8 kHz
5.76 kHz
E8D02: What is the relationship between the peak-to-peak voltage and the peak voltage amplitude of a symmetrical waveform?

0.707:1
2:1
1.414:1
4:1
E9A03: Which of the following antennas has no gain in any direction?

Quarter-wave vertical
Yagi
Half-wave dipole
Isotropic antenna
E9B14: What type of information can be obtained by submitting the details of a proposed new antenna to a modeling program?

SWR vs. frequency charts
Polar plots of the far-field elevation and azimuth patterns
Antenna gain
All of these choices are correct
E9C02: What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 90 degrees out of phase?

A cardioid
A figure-8 end-fire along the axis of the array
A figure-8 broadside to the axis of the array
Omnidirectional
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
E9E10: Which of these choices is an effective way to match an antenna with a 100-ohm feed point impedance to a 50-ohm coaxial cable feed line?

Connect a 1/4-wavelength open stub of 300-ohm twin-lead in parallel with the coaxial feed line where it connects to the antenna
Insert a 1/2 wavelength piece of 300-ohm twin-lead in series between the antenna terminals and the 50-ohm feed cable
Insert a 1/4-wavelength piece of 75-ohm coaxial cable transmission line in series between the antenna terminals and the 50-ohm feed cable
Connect 1/2 wavelength shorted stub of 75-ohm cable in parallel with the 50-ohm cable where it attaches to the antenna
E9F06: What is the approximate physical length of an air-insulated, parallel conductor transmission line that is electrically one-half wavelength long at 14.10 MHz?

15 meters
20 meters
10 meters
71 meters
E9G01: Which of the following can be calculated using a Smith chart?

Impedance along transmission lines
Radiation resistance
Antenna radiation pattern
Radio propagation
E9H09: Which of the following describes the construction of a receiving loop antenna?

A large circularly-polarized antenna
A small coil of wire tightly wound around a toroidal ferrite core
One or more turns of wire wound in the shape of a large open coil
A vertical antenna coupled to a feed line through an inductive loop of wire