Ham Extra License Practice Quiz


• Percentage: 0%; Correct: 0; Total: 0 of 50

E0A04: When evaluating a site with multiple transmitters operating at the same time, the operators and licensees of which transmitters are responsible for mitigating over-exposure situations?

Only the most powerful transmitter
Only commercial transmitters
Each transmitter that produces 5% or more of its MPE exposure limit at accessible locations
Each transmitter operating with a duty-cycle greater than 50%

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

E1B11: What is the permitted mean power of any spurious emission relative to the mean power of the fundamental emission from a station transmitter or external RF amplifier installed after January 1, 2003, and transmitting on a frequency below 30 MHZ?

At least 43 dB below
At least 53 dB below
At least 63 dB below
At least 73 dB below

E1C02: What is meant by automatic control of a station?

The use of devices and procedures for control so that the control operator does not have to be present at a control point
A station operating with its output power controlled automatically
Remotely controlling a station's antenna pattern through a directional control link
The use of a control link between a control point and a locally controlled station

E1D01: What is the definition of the term telemetry?

One-way transmission of measurements at a distance from the measuring instrument
Two-way radiotelephone transmissions in excess of 1000 feet
Two-way single channel transmissions of data
One-way transmission that initiates, modifies, or terminates the functions of a device at a distance

E1E07: What should a VE do if a candidate fails to comply with the examiner's instructions during an amateur operator license examination?

Warn the candidate that continued failure to comply will result in termination of the examination
Immediately terminate the candidate's examination
Allow the candidate to complete the examination, but invalidate the results
Immediately terminate everyones examination and close the session

E1F14: Under what circumstances might the FCC issue a "Special Temporary Authority" (STA) to an amateur station?

To provide for experimental amateur communications
To allow regular operation on Land Mobile channels
To provide additional spectrum for personal use
To provide temporary operation while awaiting normal licensing

E2A09: What do the terms L band and S band specify with regard to satellite communications?

The 23 centimeter and 13 centimeter bands
The 2 meter and 70 centimeter bands
FM and Digital Store-and-Forward systems
Which sideband to use

E2B16: Which of the following is the video standard used by North American Fast Scan ATV stations?

PAL
DRM
Scottie
NTSC

E2C07: What is the Cabrillo format?

A standard for submission of electronic contest logs
A method of exchanging information during a contest QSO
The most common set of contest rules
The rules of order for meetings between contest sponsors

E2D07: Which of the following digital protocols is used by APRS?

PACTOR
802.11
AX.25
AMTOR

E2E06: What is the most common data rate used for HF packet communications?

48 baud
110 baud
300 baud
1200 baud

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

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

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

E4B02: What is an advantage of using a bridge circuit to measure impedance?

It provides an excellent match under all conditions
It is relatively immune to drift in the signal generator source
The measurement is based on obtaining a signal null, which can be done very precisely
It can display results directly in Smith chart format

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

E4D13: Which of the following can cause receiver desensitization?

Audio gain adjusted too low
Strong adjacent-channel signals
Audio bias adjusted too high
Squelch gain misadjusted

E4E02: Which of the following types of receiver noise can often be reduced with a DSP noise filter?

Broadband white noise
Ignition noise
Power line noise
All of these choices are correct

E5A11: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 7.1 MHz and a Q of 150?

157.8 Hz
315.6 Hz
47.3 kHz
23.67 kHz

E5B09: What is the relationship between the current through a capacitor and the voltage across a capacitor?

Voltage and current are in phase
Voltage and current are 180 degrees out of phase
Voltage leads current by 90 degrees
Current leads voltage by 90 degrees

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

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

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

E6B06: Which of the following is a common use of a hot-carrier diode?

As balanced mixers in FM generation
As a variable capacitance in an automatic frequency control circuit
As a constant voltage reference in a power supply
As a VHF / UHF mixer or detector

E6C11: In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?

2
4
5
6

E6D11: How many turns will be required to produce a 1-mH inductor using a ferrite toroidal core that has an inductance index (A L) value of 523 millihenrys/1000 turns?

2 turns
4 turns
43 turns
229 turns

E6E11: Which of the following materials is likely to provide the highest frequency of operation when used in MMICs?

Silicon
Silicon nitride
Silicon dioxide
Gallium nitride

E6F09: What is the efficiency of a photovoltaic cell?

The output RF power divided by the input dc power
The effective payback period
The open-circuit voltage divided by the short-circuit current under full illumination
The relative fraction of light that is converted to current

E7A03: Which of the following can divide the frequency of a pulse train by 2?

An XOR gate
A flip-flop
An OR gate
A multiplexer

E7B19: What is a klystron?

A high speed multivibrator
An electron-coupled oscillator utilizing a pentode vacuum tube
An oscillator utilizing ceramic elements to achieve stability
A VHF, UHF, or microwave vacuum tube that uses velocity modulation

E7C04: How does an impedance-matching circuit transform a complex impedance to a resistive impedance?

It introduces negative resistance to cancel the resistive part of impedance
It introduces transconductance to cancel the reactive part of impedance
It cancels the reactive part of the impedance and changes the resistive part to a desired value
Network resistances are substituted for load resistances and reactances are matched to the resistances

E7D04: Which of the following types of linear voltage regulator usually make the most efficient use of the primary power source?

A series current source
A series regulator
A shunt regulator
A shunt current source

E7E07: What is meant by the term baseband in radio communications?

The lowest frequency band that the transmitter or receiver covers
The frequency components present in the modulating signal
The unmodulated bandwidth of the transmitted signal
The basic oscillator frequency in an FM transmitter that is multiplied to increase the deviation and carrier frequency

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

E7G13: What is meant by the term op-amp input-offset voltage?

The output voltage of the op-amp minus its input voltage
The differential input voltage needed to bring the open-loop output voltage to zero
The input voltage needed to bring the open-loop output voltage to zero
The potential between the amplifier input terminals of the op-amp in an open-loop condition

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

E8A08: What is the period of a wave?

The time required to complete one cycle
The number of degrees in one cycle
The number of zero crossings in one cycle
The amplitude of the wave

E8B06: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 7.5 kHz when the maximum modulation frequency is 3.5 kHz?

2.14
0.214
0.47
47

E8C06: What is the necessary bandwidth of a 170-hertz shift, 300-baud ASCII transmission?

0.1 Hz
0.3 kHz
0.5 kHz
1.0 kHz

E8D11: What is the average power dissipated by a 50-ohm resistive load during one complete RF cycle having a peak voltage of 35 volts?

12.2 watts
9.9 watts
24.5 watts
16 watts

E9A14: How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 12 dB gain over an isotropic antenna?

6.17 dB
9.85 dB
12.5 dB
14.15 dB

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

E9C11: How is the far-field elevation pattern of a vertically polarized antenna affected by being mounted over seawater versus rocky ground?

The low-angle radiation decreases
The high-angle radiation increases
Both the high- and low-angle radiation decrease
The low-angle radiation increases

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

E9E06: 3-element Yagi?

Pi network
Pi-L network
L network
Parallel-resonant tank

E9F08: What is the term for the ratio of the actual speed at which a signal travels through a transmission line to the speed of light in a vacuum?

Velocity factor
Characteristic impedance
Surge impedance
Standing wave ratio

E9G04: What are the two families of circles and arcs that make up a Smith chart?

Resistance and voltage
Reactance and voltage
Resistance and reactance
Voltage and impedance

E9H02: What is the effective radiated power relative to a dipole of a repeater station with 200 watts transmitter power output, 4-dB feed line loss, 3.2-dB duplexer loss, 0.8-dB circulator loss and 10-dBd antenna gain?

317 watts
2000 watts
126 watts
300 watts