Ham Technician License Practice Quiz
• Percentage: 0%; Correct: 0; Total: 0 of 35
T0A13: What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits?
A fuse or circuit breaker in series with the AC "hot" conductor
An AC voltmeter across the incoming power source
An inductor in series with the AC power source
A capacitor across the AC power source
T0B06: What is the minimum safe distance from a power line to allow when installing an antenna?
Half the width of your property
The height of the power line above ground
1/2 wavelength at the operating frequency
So that if the antenna falls unexpectedly, no part of it can come closer than 10 feet to the power wires
T0C09: How can you make sure your station stays in compliance with RF safety regulations?
By informing the FCC of any changes made in your station
By re-evaluating the station whenever an item of equipment is changed
By making sure your antennas have low SWR
All of these choices are correct
T1A04: Which of the following meets the FCC definition of harmful interference?
Radio transmissions that annoy users of a repeater
Unwanted radio transmissions that cause costly harm to radio station apparatus
That which seriously degrades, obstructs, or repeatedly interrupts a radio communication service operating in accordance with the Radio Regulations
Static from lightning storms
T1B11: What emission modes are permitted in the mode-restricted sub-bands at 50.0 to 50.1 MHz and 144.0 to 144.1 MHz?
CW and RTTY
CW and SSB
T1C07: What may result when correspondence from the FCC is returned as undeliverable because the grantee failed to provide the correct mailing address?
Fine or imprisonment
Revocation of the station license or suspension of the operator license
Require the licensee to be re-examined
A reduction of one rank in operator class
T1D10: What is the meaning of the term broadcasting in the FCC rules for the amateur services?
Two-way transmissions by amateur stations
Transmission of music
Transmission of messages directed only to amateur operators
Transmissions intended for reception by the general public
T1E05: What is an amateur station control point?
The location of the station's transmitting antenna
The location of the station transmitting apparatus
The location at which the control operator function is performed
The mailing address of the station licensee
T1F03: When is an amateur station required to transmit its assigned call sign?
At the beginning of each contact, and every 10 minutes thereafter
At least once during each transmission
At least every 15 minutes during and at the end of a contact
At least every 10 minutes during and at the end of a contact
T2A06: What must an amateur operator do when making on-air transmissions to test equipment or antennas?
Properly identify the transmitting station
Make test transmissions only after 10:00 p.m. local time
Notify the FCC of the test transmission
State the purpose of the test during the test procedure
T2B08: What is the proper course of action if your station's transmission unintentionally interferes with another station?
Rotate your antenna slightly
Properly identify your transmission and move to a different frequency
Change antenna polarization
T2C04: What do RACES and ARES have in common?
They represent the two largest ham clubs in the United States
Both organizations broadcast road and weather traffic information
Neither may handle emergency traffic supporting public service agencies
Both organizations may provide communications during emergencies
T3A09: Which of the following is a common effect of "skip" reflections between the Earth and the ionosphere?
The sidebands become reversed at each reflection
The polarization of the original signal is randomized
The apparent frequency of the received signal is shifted by a random amount
Signals at frequencies above 30 MHz become stronger with each reflection
T3B11: What is the approximate velocity of a radio wave as it travels through free space?
3000 kilometers per second
300,000,000 meters per second
300,000 miles per hour
186,000 miles per hour
T3C04: Which of the following propagation types is most commonly associated with occasional strong over-the-horizon signals on the 10, 6, and 2 meter bands?
D layer absorption
T4A03: Which is a good reason to use a regulated power supply for communications equipment?
It prevents voltage fluctuations from reaching sensitive circuits
A regulated power supply has FCC approval
A fuse or circuit breaker regulates the power
Power consumption is independent of load
T4B01: What may happen if a transmitter is operated with the microphone gain set too high?
The output power might be too high
The output signal might become distorted
The frequency might vary
The SWR might increase
T5A10: Which term describes the rate at which electrical energy is used?
T5B05: Which of the following is equivalent to 500 milliwatts?
T5C11: How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?
T5D08: What is the current flowing through a 100-ohm resistor connected across 200 volts?
T6A11: Which battery type is not rechargeable?
T6B04: Which of these components is made of three layers of semiconductor material?
Bipolar junction transistor
T6C02: What is component 1 in figure T1?
T6D11: Which of the following is a common use of coaxial cable?
Carry dc power from a vehicle battery to a mobile radio
Carry RF signals between a radio and antenna
Secure masts, tubing, and other cylindrical objects on towers
Connect data signals from a TNC to a computer
T7A02: What type of receiver is shown in Figure T6?
T7B06: What should you do first if someone tells you that your station's transmissions are interfering with their radio or TV reception?
Make sure that your station is functioning properly and that it does not cause interference to your own television
Immediately turn off your transmitter and contact the nearest FCC office for assistance
Tell them that your license gives you the right to transmit and nothing can be done to reduce the interference
Continue operating normally because your equipment cannot possibly cause any interference
T7C08: What instrument other than an SWR meter could you use to determine if a feedline and antenna are properly matched?
T7D06: Which of the following might damage a multimeter?
Measuring a voltage too small for the chosen scale
Leaving the meter in the milliamps position overnight
Attempting to measure voltage when using the resistance setting
Not allowing it to warm up properly
T8A06: Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?
T8B07: With regard to satellite communications, what is Doppler shift?
A change in the satellite orbit
A mode where the satellite receives signals on one band and transmits on another
An observed change in signal frequency caused by relative motion between the satellite and the earth station
A special digital communications mode for some satellites
T8C05: What is a grid locator?
A letter-number designator assigned to a geographic location
A letter-number designator assigned to an azimuth and elevation
An instrument for neutralizing a final amplifier
An instrument for radio direction finding
T8D11: What is a "parity" bit?
A control code required for automatic position reporting
A timing bit used to ensure equal sharing of a frequency
An extra code element used to detect errors in received data
A "triple width" bit used to signal the end of a character
T9A04: What is a disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers?
It does not transmit or receive as effectively as a full-sized antenna
It transmits a circularly polarized signal
If the rubber end cap is lost it will unravel very quickly
All of these choices are correct
T9B08: Why should coax connectors exposed to the weather be sealed against water intrusion?
To prevent an increase in feedline loss
To prevent interference to telephones
To keep the jacket from becoming loose
All of these choices are correct