Ham Technician License Practice Quiz


• Percentage: 0%; Correct: 0; Total: 0 of 35

T0A04: What is the purpose of a fuse in an electrical circuit?

To prevent power supply ripple from damaging a circuit
To interrupt power in case of overload
To limit current to prevent shocks
All of these choices are correct

T0B07: Which of the following is an important safety rule to remember when using a crank-up tower?

This type of tower must never be painted
This type of tower must never be grounded
This type of tower must never be climbed unless it is in the fully retracted position
All of these choices are correct

T0C05: Why do exposure limits vary with frequency?

Lower frequency RF fields have more energy than higher frequency fields
Lower frequency RF fields do not penetrate the human body
Higher frequency RF fields are transient in nature
The human body absorbs more RF energy at some frequencies than at others

T1A09: Who selects a Frequency Coordinator?

The FCC Office of Spectrum Management and Coordination Policy
The local chapter of the Office of National Council of Independent Frequency Coordinators
Amateur operators in a local or regional area whose stations are eligible to be auxiliary or repeater stations
FCC Regional Field Office

T1B01: What is the ITU?

An agency of the United States Department of Telecommunications Management
A United Nations agency for information and communication technology issues
An independent frequency coordination agency
A department of the FCC

T1C09: What is the grace period following the expiration of an amateur license within which the license may be renewed?

Two years
Three years
Five years
Ten years

T1D06: Which of the following types of transmissions are prohibited?

Transmissions that contain obscene or indecent words or language
Transmissions to establish one-way communications
Transmissions to establish model aircraft control
Transmissions for third party communications

T1E09: What type of control is being used when transmitting using a handheld radio?

Radio control
Unattended control
Automatic control
Local control

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

T2A08: What is the meaning of the procedural signal "CQ"?

Call on the quarter hour
A new antenna is being tested (no station should answer)
Only the called station should transmit
Calling any station

T2B07: What should you do if you receive a report that your station's transmissions are causing splatter or interference on nearby frequencies?

Increase transmit power
Change mode of transmission
Report the interference to the equipment manufacturer
Check your transmitter for off-frequency operation or spurious emissions

T2C11: What is meant by the term "check" in reference to a formal traffic message?

The check is a count of the number of words or word equivalents in the text portion of the message
The check is the value of a money order attached to the message
The check is a list of stations that have relayed the message
The check is a box on the message form that tells you the message was received

T3A11: Which part of the atmosphere enables the propagation of radio signals around the world?

The stratosphere
The troposphere
The ionosphere
The magnetosphere

T3B04: How fast does a radio wave travel through free space?

At the speed of light
At the speed of sound
Its speed is inversely proportional to its wavelength
Its speed increases as the frequency increases

T3C02: Which of the following might be happening when VHF signals are being received from long distances?

Signals are being reflected from outer space
Signals are arriving by sub-surface ducting
Signals are being reflected by lightning storms in your area
Signals are being refracted from a sporadic E layer

T4A01: Which of the following is true concerning the microphone connectors on amateur transceivers?

All transceivers use the same microphone connector type
Some connectors include push-to-talk and voltages for powering the microphone
All transceivers using the same connector type are wired identically
Un-keyed connectors allow any microphone to be connected

T4B04: What is a way to enable quick access to a favorite frequency on your transceiver?

Enable the CTCSS tones
Store the frequency in a memory channel
Disable the CTCSS tones
Use the scan mode to select the desired frequency

T5A10: Which term describes the rate at which electrical energy is used?

Resistance
Current
Power
Voltage

T5B08: How many microfarads are 1,000,000 picofarads?

0.001 microfarads
1 microfarad
1000 microfarads
1,000,000,000 microfarads

T5C09: How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?

138 watts
0.7 watts
23.8 watts
3.8 watts

T5D03: What formula is used to calculate resistance in a circuit?

Resistance (R) equals voltage (E) multiplied by current (I)
Resistance (R) equals voltage (E) divided by current (I)
Resistance (R) equals voltage (E) added to current (I)
Resistance (R) equals voltage (E) minus current (I)

T6A02: What type of component is often used as an adjustable volume control?

Fixed resistor
Power resistor
Potentiometer
Transformer

T6B03: Which of these components can be used as an electronic switch or amplifier?

Oscillator
Potentiometer
Transistor
Voltmeter

T6C08: What is component 9 in figure T2?

Variable capacitor
Variable inductor
Variable resistor
Variable transformer

T6D04: Which of the following can be used to display signal strength on a numeric scale?

Potentiometer
Transistor
Meter
Relay

T7A03: What is the function of a mixer in a superheterodyne receiver?

To reject signals outside of the desired passband
To combine signals from several stations together
To shift the incoming signal to an intermediate frequency
To connect the receiver with an auxiliary device, such as a TNC

T7B10: What might be the problem if you receive a report that your audio signal through the repeater is distorted or unintelligible?

Your transmitter may be slightly off frequency
Your batteries may be running low
You could be in a bad location
All of these choices are correct

T7C08: What instrument other than an SWR meter could you use to determine if a feedline and antenna are properly matched?

Voltmeter
Ohmmeter
Iambic pentameter
Directional wattmeter

T7D11: Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?

Ensure that the applied voltages are correct
Ensure that the circuit is not powered
Ensure that the circuit is grounded
Ensure that the circuit is operating at the correct frequency

T8A10: What is the typical bandwidth of analog fast-scan TV transmissions on the 70 cm band?

More than 10 MHz
About 6 MHz
About 3 MHz
About 1 MHz

T8B11: What is a commonly used method of sending signals to and from a digital satellite?

USB AFSK
PSK31
FM Packet
WSJT

T8C01: Which of the following methods is used to locate sources of noise interference or jamming?

Echolocation
Doppler radar
Radio direction finding
Phase locking

T8D07: What is PSK31?

A high-rate data transmission mode
A method of reducing noise interference to FM signals
A method of compressing digital television signal
A low-rate data transmission mode

T9A11: What is meant by the gain of an antenna?

The additional power that is added to the transmitter power
The additional power that is lost in the antenna when transmitting on a higher frequency
The increase in signal strength in a specified direction when compared to a reference antenna
The increase in impedance on receive or transmit compared to a reference antenna

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