Ham General License Practice Quiz
• Percentage: 0%; Correct: 0; Total: 0 of 35
G0A07: What effect does transmitter duty cycle have when evaluating RF exposure?
A lower transmitter duty cycle permits greater short-term exposure levels
A higher transmitter duty cycle permits greater short-term exposure levels
Low duty cycle transmitters are exempt from RF exposure evaluation requirements
High duty cycle transmitters are exempt from RF exposure requirements
G0B10: Which of the following is a danger from lead-tin solder?
Lead can contaminate food if hands are not washed carefully after handling
High voltages can cause lead-tin solder to disintegrate suddenly
Tin in the solder can 'cold flow' causing shorts in the circuit
RF energy can convert the lead into a poisonous gas
G1A11: Which of the following frequencies is available to a control operator holding a General Class license?
28.020 MHz
28.350 MHz
28.550 MHz
All of these choices are correct
G1B04: Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?
The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of
The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
The FCC must have declared a state of emergency
All of these choices are correct
G1C08: What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?
56 kilobaud
19.6 kilobaud
1200 baud
300 baud
G1D08: Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?
The person must be a resident of the U.S. for a minimum of 5 years
The person must hold an FCC granted Amateur Radio license of General Class or above
The person's home citizenship must be in the ITU 2 region
None of these choices is correct; non-U.S. citizens cannot be volunteer examiners
G1E07: With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?
Countries in ITU Region 2
Countries in ITU Region 1
Every foreign country, unless there is a third party agreement in effect with that country
Any country which is not a member of the International Amateur Radio Union (IARU)
G2A03: Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?
Upper sideband
Lower sideband
Vestigial sideband
Double sideband
G2B10: When may the FCC restrict normal frequency operations of amateur stations participating in RACES?
When they declare a temporary state of communication emergency
When they seize your equipment for use in disaster communications
Only when all amateur stations are instructed to stop transmitting
When the President's War Emergency Powers have been invoked
G2C03: What does it mean when a CW operator sends "KN" at the end of a transmission?
Listening for novice stations
Operating full break-in
Listening only for a specific station or stations
Closing station now
G2D08: Why do many amateurs keep a log even though the FCC doesn't require it?
The ITU requires a log of all international contacts
The ITU requires a log of all international third party traffic
The log provides evidence of operation needed to renew a license without retest
To help with a reply if the FCC requests information
G2E04: What segment of the 20 meter band is most often used for data transmissions?
14.000 - 14.050 MHz
14.070 - 14.100 MHz
14.150 - 14.225 MHz
14.275 - 14.350 MHz
G3A02: What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?
It enhances propagation on all HF frequencies
It disrupts signals on lower frequencies more than those on higher frequencies
It disrupts communications via satellite more than direct communications
None, because only areas on the night side of the Earth are affected
G3B03: Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?
Select a frequency just below the MUF
Select a frequency just above the LUF
Select a frequency just below the critical frequency
Select a frequency just above the critical frequency
G3C13: What is Near Vertical Incidence Sky-wave (NVIS) propagation?
Propagation near the MUF
Short distance HF propagation using high elevation angles
Long path HF propagation at sunrise and sunset
Double hop propagation near the LUF
G4A02: What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver?
Interference from impulse noise will be eliminated
More stations can be accommodated within a given signal passband
It may be possible to reduce or eliminate interference from other signals
Accidental out of band operation can be prevented
G4B14: What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a numerical digital readout?
When testing logic circuits
When high precision is desired
When measuring the frequency of an oscillator
When adjusting tuned circuits
G4C11: Which of the following is one use for a Digital Signal Processor in an amateur station?
To provide adequate grounding
To remove noise from received signals
To increase antenna gain
To increase antenna bandwidth
G4D05: How does an S meter reading of 20 dB over S-9 compare to an S-9 signal, assuming a properly calibrated S meter?
It is 10 times weaker
It is 20 times weaker
It is 20 times stronger
It is 100 times stronger
G4E10: What is the reason a series diode is connected between a solar panel and a storage battery that is being charged by the panel?
The diode serves to regulate the charging voltage to prevent overcharge
The diode prevents self discharge of the battery though the panel during times of low or no illumination
The diode limits the current flowing from the panel to a safe value
The diode greatly increases the efficiency during times of high illumination
G5A09: What unit is used to measure reactance?
Farad
Ohm
Ampere
Siemens
G5B12: What would be the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?
173 volts
245 volts
346 volts
692 volts
G5C07: What is the turns ratio of a transformer used to match an audio amplifier having a 600-ohm output impedance to a speaker having a 4-ohm impedance?
12.2 to 1
24.4 to 1
150 to 1
300 to 1
G6A13: What is an effect of inter-turn capacitance in an inductor?
The magnetic field may become inverted
The inductor may become self resonant at some frequencies
The permeability will increase
The voltage rating may be exceeded
G6B03: What is the approximate junction threshold voltage of a germanium diode?
0.1 volt
0.3 volts
0.7 volts
1.0 volts
G6C01: Which of the following is an analog integrated circuit?
NAND Gate
Microprocessor
Frequency Counter
Linear voltage regulator
G7A01: What safety feature does a power-supply bleeder resistor provide?
It acts as a fuse for excess voltage
It discharges the filter capacitors
It removes shock hazards from the induction coils
It eliminates ground-loop current
G7B09: What determines the frequency of an LC oscillator?
The number of stages in the counter
The number of stages in the divider
The inductance and capacitance in the tank circuit
The time delay of the lag circuit
G7C03: What circuit is used to process signals from the RF amplifier and local oscillator and send the result to the IF filter in a superheterodyne receiver?
Balanced modulator
IF amplifier
Mixer
Detector
G8A10: What is meant by flat-topping of a single-sideband phone transmission?
Signal distortion caused by insufficient collector current
The transmitter's automatic level control is properly adjusted
Signal distortion caused by excessive drive
The transmitter's carrier is properly suppressed
G8B10: What does the number 31 represent in PSK31?
The approximate transmitted symbol rate
The version of the PSK protocol
The year in which PSK31 was invented
The number of characters that can be represented by PSK31
G9A05: How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?
It is independent of frequency
It increases
It decreases
It reaches a maximum at approximately 18 MHz
G9B05: How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?
If the antenna is too high, the pattern becomes unpredictable
Antenna height has no effect on the pattern
If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
G9C07: What does "front-to-back ratio" mean in reference to a Yagi antenna?
The number of directors versus the number of reflectors
The relative position of the driven element with respect to the reflectors and directors
The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction
The ratio of forward gain to dipole gain
G9D09: Which of the following is an application for a Beverage antenna?
Directional transmitting for low HF bands
Directional receiving for low HF bands
Portable direction finding at higher HF frequencies
Portable direction finding at lower HF frequencies
