Ham Extra License Practice Quiz
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E0A10: What material found in some electronic components such as high-voltage capacitors and transformers is considered toxic?
Polychlorinated biphenyls
Polyethylene
Polytetrafluroethylene
Polymorphic silicon
E1A05: What is the maximum power output permitted on the 60 meter band?
50 watts PEP effective radiated power relative to an isotropic radiator
50 watts PEP effective radiated power relative to a dipole
100 watts PEP effective radiated power relative to the gain of a half-wave dipole
100 watts PEP effective radiated power relative to an isotropic radiator
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
E1C07: What is meant by local control?
Controlling a station through a local auxiliary link
Automatically manipulating local station controls
Direct manipulation of the transmitter by a control operator
Controlling a repeater using a portable handheld transceiver
E1D06: Which of the following special provisions must a space station incorporate in order to comply with space station requirements?
The space station must be capable of terminating transmissions by telecommand when directed by the FCC
The space station must cease all transmissions after 5 years
The space station must be capable of changing its orbit whenever such a change is ordered by NASA
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
E1F07: When may an amateur station send a message to a business?
When the total money involved does not exceed $25
When the control operator is employed by the FCC or another government agency
When transmitting international third-party communications
When neither the amateur nor his or her employer has a pecuniary interest in the communications
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
E2B06: What is vestigial sideband modulation?
Amplitude modulation in which one complete sideband and a portion of the other are transmitted
A type of modulation in which one sideband is inverted
Narrow-band FM transmission achieved by filtering one sideband from the audio before frequency modulating the carrier
Spread spectrum modulation achieved by applying FM modulation following single sideband amplitude modulation
E2C01: Which of the following is true about contest operating?
Operators are permitted to make contacts even if they do not submit a log
Interference to other amateurs is unavoidable and therefore acceptable
It is mandatory to transmit the call sign of the station being worked as part of every transmission to that station
Every contest requires a signal report in the exchange
E2D05: Which of the following techniques is normally used by low Earth orbiting digital satellites to relay messages around the world?
Digipeating
Store-and-forward
Multi-satellite relaying
Node hopping
E2E04: What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?
Selective fading has occurred
One of the signal filters has saturated
The receiver has drifted 5 kHz from the desired receive frequency
The mark and space signal have been inverted
E3A07: What frequency range would you normally tune to find EME signals in the 70 cm band?
430.000 - 430.150 MHz
430.100 - 431.100 MHz
431.100 - 431.200 MHz
432.000 - 432.100 MHz
E3B05: Which amateur bands typically support long-path propagation?
160 to 40 meters
30 to 10 meters
160 to 10 meters
6 meters to 2 meters
E3C08: What is the name of the high-angle wave in HF propagation that travels for some distance within the F2 region?
Oblique-angle ray
Pedersen ray
Ordinary ray
Heaviside ray
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
E4B14: What happens if a dip meter is too tightly coupled to a tuned circuit being checked?
Harmonics are generated
A less accurate reading results
Cross modulation occurs
Intermodulation distortion occurs
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
E4D03: How can intermodulation interference between two repeaters occur?
When the repeaters are in close proximity and the signals cause feedback in the final amplifier of one or both transmitters
When the repeaters are in close proximity and the signals mix in the final amplifier of one or both transmitters
When the signals from the transmitters are reflected out of phase from airplanes passing overhead
When the signals from the transmitters are reflected in phase from airplanes passing overhead
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
E5A08: What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?
The voltage leads the current by 90 degrees
The current leads the voltage by 90 degrees
The voltage and current are in phase
The voltage and current are 180 degrees out of phase
E5B01: What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the applied voltage?
An exponential rate of one
One time constant
One exponential period
A time factor of one
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
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
E6A02: Which of the following semiconductor materials contains excess free electrons?
N-type
P-type
Bipolar
Insulated gate
E6B03: What special type of diode is capable of both amplification and oscillation?
Point contact
Zener
Tunnel
Junction
E6C03: Which of the following describes tri-state logic?
Logic devices with 0, 1, and high impedance output states
Logic devices that utilize ternary math
Low power logic devices designed to operate at 3 volts
Proprietary logic devices manufactured by Tri-State Devices
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
E6E08: How is power-supply voltage normally furnished to the most common type of monolithic microwave integrated circuit (MMIC)?
Through a resistor and/or RF choke connected to the amplifier output lead
MMICs require no operating bias
Through a capacitor and RF choke connected to the amplifier input lead
Directly to the bias-voltage (VCC IN) lead
E6F06: Which of these materials is affected the most by photoconductivity?
A crystalline semiconductor
An ordinary metal
A heavy metal
A liquid semiconductor
E7A06: What is a characteristic of a monostable multivibrator?
It switches momentarily to the opposite binary state and then returns, after a set time, to its original state
It is a clock that produces a continuous square wave oscillating between 1 and 0
It stores one bit of data in either a 0 or 1 state
It maintains a constant output voltage, regardless of variations in the input voltage
E7B09: Which of the following describes how the loading and tuning capacitors are to be adjusted when tuning a vacuum tube RF power amplifier that employs a pi-network output circuit?
The loading capacitor is set to maximum capacitance and the tuning capacitor is adjusted for minimum allowable plate current
The tuning capacitor is set to maximum capacitance and the loading capacitor is adjusted for minimum plate permissible current
The loading capacitor is adjusted to minimum plate current while alternately adjusting the tuning capacitor for maximum allowable plate current
The tuning capacitor is adjusted for minimum plate current, while the loading capacitor is adjusted for maximum permissible plate current
E7C06: What are the distinguishing features of an elliptical filter?
Gradual passband rolloff with minimal stop band ripple
Extremely flat response over its pass band with gradually rounded stop band corners
Extremely sharp cutoff with one or more notches in the stop band
Gradual passband rolloff with extreme stop band ripple
E7D07: What is the purpose of C2 in the circuit shown in Figure E7-3?
It bypasses hum around D1
It is a brute force filter for the output
To self-resonate at the hum frequency
To provide fixed DC bias for Q1
E7E06: Why is de-emphasis commonly used in FM communications receivers?
For compatibility with transmitters using phase modulation
To reduce impulse noise reception
For higher efficiency
To remove third-order distortion products
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
E7G07: What magnitude of voltage gain can be expected from the circuit in Figure E7-4 when R1 is 10 ohms and RF is 470 ohms?
0.21
94
47
24
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
E8A14: Which of these methods is commonly used to convert analog signals to digital signals?
Sequential sampling
Harmonic regeneration
Level shifting
Phase reversal
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
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
E8D04: What is the PEP output of a transmitter that develops a peak voltage of 30 volts into a 50-ohm load?
4.5 watts
9 watts
16 watts
18 watts
E9A02: How much gain does a 1/2-wavelength dipole in free space have compared to an isotropic antenna?
1.55 dB
2.15 dB
3.05 dB
4.30 dB
E9B06: If the boom of a Yagi antenna is lengthened and the elements are properly retuned, what usually occurs?
The gain increases
The SWR decreases
The front-to-back ratio increases
The gain bandwidth decreases rapidly
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
E9D11: What is the function of a loading coil as used with an HF mobile antenna?
To increase the SWR bandwidth
To lower the losses
To lower the Q
To cancel capacitive reactance
E9E12: What is the primary purpose of a phasing line when used with an antenna having multiple driven elements?
It ensures that each driven element operates in concert with the others to create the desired antenna pattern
It prevents reflected power from traveling back down the feed line and causing harmonic radiation from the transmitter
It allows single-band antennas to operate on other bands
It makes sure the antenna has a low-angle radiation pattern
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
E9G07: On the Smith chart shown in Figure E9-3, what is the only straight line shown?
The reactance axis
The current axis
The voltage axis
The resistance axis
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
