Ham Technician License Practice Quiz


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

T0A07: Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feedline?

Include a parallel bypass switch for each protector so that it can be switched out of the circuit when running high power
Include a series switch in the ground line of each protector to prevent RF overload from inadvertently damaging the protector
Keep the ground wires from each protector separate and connected to station ground
Ground all of the protectors to a common plate which is in turn connected to an external ground

T0B03: Under what circumstances is it safe to climb a tower without a helper or observer?

When no electrical work is being performed
When no mechanical work is being performed
When the work being done is not more than 20 feet above the ground
Never

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

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

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

T1C05: What must you do if you are operating on the 23 cm band and learn that you are interfering with a radiolocation station outside the United States?

Stop operating or take steps to eliminate the harmful interference
Nothing, because this band is allocated exclusively to the amateur service
Establish contact with the radiolocation station and ask them to change frequency
Change to CW mode, because this would not likely cause interference

T1D09: Under which of the following circumstances are amateur stations authorized to transmit signals related to broadcasting, program production, or news gathering, assuming no other means is available?

Only where such communications directly relate to the immediate safety of human life or protection of property
Only when broadcasting communications to or from the space shuttle.
Only where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
Only when using amateur repeaters linked to the Internet

T1E10: What type of control is used when the control operator is not at the station location but can indirectly manipulate the operating adjustments of a station?

Local
Remote
Automatic
Unattended

T1F06: Which of the following formats of a self-assigned indicator is acceptable when identifying using a phone transmission?

KL7CC stroke W3
KL7CC slant W3
KL7CC slash W3
All of these choices are correct

T2A04: What is an appropriate way to call another station on a repeater if you know the other station's call sign?

Say "break, break" then say the station's call sign
Say the station's call sign then identify with your call sign
Say "CQ" three times then the other station's call sign
Wait for the station to call "CQ" then answer it

T2B04: Which of the following common problems might cause you to be able to hear but not access a repeater even when transmitting with the proper offset?

The repeater receiver requires audio tone burst for access
The repeater receiver requires a CTCSS tone for access
The repeater receiver may require a DCS tone sequence for access
All of these choices are correct

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

T3A04: What can happen if the antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?

The modulation sidebands might become inverted
Signals could be significantly weaker
Signals have an echo effect on voices
Nothing significant will happen

T3B01: What is the name for the distance a radio wave travels during one complete cycle?

Wave speed
Waveform
Wavelength
Wave spread

T3C07: What band is best suited to communicating via meteor scatter?

10 meters
6 meters
2 meters
70 cm

T4A11: Where should a mobile transceiver's power negative connection be made?

At the battery or engine block ground strap
At the antenna mount
To any metal part of the vehicle
Through the transceiver's mounting bracket

T4B08: What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?

Permits monitoring several modes at once
Permits noise or interference reduction by selecting a bandwidth matching the mode
Increases the number of frequencies that can be stored in memory
Increases the amount of offset between receive and transmit frequencies

T5A11: What is the basic unit of electromotive force?

The volt
The watt
The ampere
The ohm

T5B09: What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?

2 dB
3 dB
5 dB
10 dB

T5C11: How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?

0.1 amperes
10 amperes
12 amperes
132 amperes

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)

T6A06: What type of electrical component stores energy in a magnetic field?

Resistor
Capacitor
Inductor
Diode

T6B04: Which of these components is made of three layers of semiconductor material?

Alternator
Bipolar junction transistor
Triode
Pentagrid converter

T6C07: What is component 8 in figure T2?

Resistor
Inductor
Regulator IC
Light emitting diode

T6D09: What is the name of a device that combines several semiconductors and other components into one package?

Transducer
Multi-pole relay
Integrated circuit
Transformer

T7A12: Which term describes the ability of a receiver to discriminate between multiple signals?

Tuning rate
Sensitivity
Selectivity
Noise floor

T7B08: What should you do if a "Part 15" device in your neighbor's home is causing harmful interference to your amateur station?

Work with your neighbor to identify the offending device
Politely inform your neighbor about the rules that require him to stop using the device if it causes interference
Check your station and make sure it meets the standards of good amateur practice
All of these choices are correct

T7C09: Which of the following is the most common cause for failure of coaxial cables?

Moisture contamination
Gamma rays
The velocity factor exceeds 1.0
Overloading

T7D03: How is an ammeter usually connected to a circuit?

In series with the circuit
In parallel with the circuit
In quadrature with the circuit
In phase with the circuit

T8A08: What is the approximate bandwidth of a single sideband voice signal?

1 kHz
3 kHz
6 kHz
15 kHz

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

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

Echolocation
Doppler radar
Radio direction finding
Phase locking

T8D05: Which of the following emission modes may be used by a Technician Class operator between 219 and 220 MHz?

Spread spectrum
Data
SSB voice
Fast-scan television

T9A01: What is a beam antenna?

An antenna built from aluminum I-beams
An omnidirectional antenna invented by Clarence Beam
An antenna that concentrates signals in one direction
An antenna that reverses the phase of received signals

T9B06: Which of the following connectors is most suitable for frequencies above 400 MHz?

A UHF (PL-259/SO-239) connector
A Type N connector
An RS-213 connector
A DB-23 connector