KB0MGA.net Practice Ham Radio Exam

KB0MGA.net Practice Exam

Element 2: Technician

User: Anonymous

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1.	What kind of hazard is presented by a conventional 12-volt storage battery?
	A. All of these choices are correct
	B. It emits ozone which can be harmful to the atmosphere
	C. Shock hazard due to high voltage
	D. Explosive gas can collect if not properly vented


2.	Why should you avoid attaching an antenna to a utility pole?
	A. The antenna will not work properly because of induced voltages
	B. The utility company will charge you an extra monthly fee
	C. The antenna could contact high-voltage power wires
	D. All of these choices are correct


3.	Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?
	A. It affects the average exposure of people to radiation
	B. It takes into account the antenna feedline loss
	C. It takes into account the thermal effects of the final amplifier
	D. It affects the peak exposure of people to radiation


4.	Who selects a Frequency Coordinator?
	A. The FCC Office of Spectrum Management and Coordination Policy
	B. Amateur operators in a local or regional area whose stations are eligible to be auxiliary or repeater stations
	C. FCC Regional Field Office
	D. The local chapter of the Office of National Council of Independent Frequency Coordinators


5.	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?
	A. CW and RTTY
	B. CW and SSB
	C. SSB only
	D. CW only


6.	What is the normal term for an FCC-issued primary station/operator license grant?
	A. Life
	B. Five years
	C. Ten years
	D. Twenty years


7.	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?
	A. Only where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
	B. Only when broadcasting communications to or from the space shuttle.
	C. Only where such communications directly relate to the immediate safety of human life or protection of property
	D. Only when using amateur repeaters linked to the Internet


8.	When the control operator is not the station licensee, who is responsible for the proper operation of the station?
	A. Only the control operator
	B. The control operator and the station licensee are equally responsible
	C. All licensed amateurs who are present at the operation
	D. Only the station licensee


9.	What method of call sign identification is required for a station transmitting phone signals?
	A. Send the call sign followed by the indicator R
	B. Send the call sign using only phone emission
	C. Send the call sign using CW or phone emission
	D. Send the call sign followed by the indicator RPT


10.	What must an amateur operator do when making on-air transmissions to test equipment or antennas?
	A. Notify the FCC of the test transmission
	B. State the purpose of the test during the test procedure
	C. Properly identify the transmitting station
	D. Make test transmissions only after 10:00 p.m. local time


11.	What determines the amount of deviation of an FM signal?
	A. The relative phase of the modulating signal and the carrier
	B. Both the frequency and amplitude of the modulating signal
	C. The amplitude of the modulating signal
	D. The frequency of the modulating signal


12.	What set of rules applies to proper operation of your station when using amateur radio at the request of public service officials?
	A. ARES Rules
	B. FCC Rules
	C. RACES Rules
	D. FEMA Rules


13.	What type of wave carries radio signals between transmitting and receiving stations?
	A. Magnetostrictive
	B. Electrostatic
	C. Electromagnetic
	D. Surface acoustic


14.	What frequency range is referred to as HF?
	A. 3 to 30 MHz
	B. 300 to 3000 kHz
	C. 300 to 3000 MHz
	D. 30 to 300 MHz


15.	What is a characteristic of VHF signals received via auroral reflection?
	A. These types of signals occur only during winter nighttime hours
	B. Signals from distances of 10,000 or more miles are common
	C. These types of signals are generally strongest when your antenna is aimed to the south (for stations in the Northern Hemisphere)
	D. The signals exhibit rapid fluctuations of strength and often sound distorted


16.	Which is a good reason to use a regulated power supply for communications equipment?
	A. Power consumption is independent of load
	B. A fuse or circuit breaker regulates the power
	C. A regulated power supply has FCC approval
	D. It prevents voltage fluctuations from reaching sensitive circuits


17.	Which of the following can be used to enter the operating frequency on a modern transceiver?
	A. The keypad or VFO knob
	B. The CTCSS or DTMF encoder
	C. The Automatic Frequency Control
	D. All of these choices are correct


18.	What is the basic unit of electromotive force?
	A. The ampere
	B. The volt
	C. The watt
	D. The ohm


19.	What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?
	A. 10 dB
	B. 3 dB
	C. 5 dB
	D. 2 dB


20.	What is a usual name for electromagnetic waves that travel through space?
	A. Sound waves
	B. Radio waves
	C. Pressure waves
	D. Gravity waves


21.	What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?
	A. 10 volts
	B. 1 volt
	C. 9 volts
	D. 11 volts


22.	What electrical component is used to protect other circuit components from current overloads?
	A. Shield
	B. Fuse
	C. Capacitor
	D. Inductor


23.	What class of electronic components is capable of using a voltage or current signal to control current flow?
	A. Transistors
	B. Resistors
	C. Capacitors
	D. Inductors


24.	What is the name for standardized representations of components in an electrical wiring diagram?
	A. Grey sketch
	B. Electrical depictions
	C. Component callouts
	D. Schematic symbols


25.	Which of the following can be used to display signal strength on a numeric scale?
	A. Potentiometer
	B. Relay
	C. Transistor
	D. Meter


26.	What is the function of a product detector?
	A. Demodulate FM signals
	B. Combine speech and RF signals
	C. Detect phase modulated signals
	D. Detect CW and SSB signals


27.	What is a logical first step when attempting to cure a radio frequency interference problem in a nearby telephone?
	A. Install a high-pass filter at the transmitter
	B. Install an RF filter at the telephone
	C. Install a low-pass filter at the transmitter
	D. Improve station grounding


28.	What reading on an SWR meter indicates a perfect impedance match between the antenna and the feedline?
	A. 1 to 3
	B. 1 to 1
	C. 2 to 1
	D. 10 to 1


29.	Which of the following might damage a multimeter?
	A. Attempting to measure voltage when using the resistance setting
	B. Not allowing it to warm up properly
	C. Leaving the meter in the milliamps position overnight
	D. Measuring a voltage too small for the chosen scale


30.	What is the primary advantage of single sideband over FM for voice transmissions?
	A. SSB signals have narrower bandwidth
	B. All of these choices are correct
	C. SSB signals are easier to tune
	D. SSB signals are less susceptible to interference


31.	What do the initials LEO tell you about an amateur satellite?
	A. The satellite is performing a Lunar Ejection Orbit maneuver
	B. The satellite is in a Low Earth Orbit
	C. The satellite battery is in Low Energy Operation mode
	D. The satellite uses Light Emitting Optics


32.	For what purpose is a temporary "1 by 1" format (letter-number-letter) call sign assigned?
	A. All of these choices are correct
	B. To designate an experimental station
	C. For operations in conjunction with an activity of special significance to the amateur community
	D. To honor a deceased relative who was a radio amateur


33.	What type of transmission is indicated by the term NTSC?
	A. A special mode for earth satellite uplink
	B. An analog fast scan color TV signal
	C. A Normal Transmission mode in Static Circuit
	D. A frame compression scheme for TV signals


34.	How would you change a dipole antenna to make it resonant on a higher frequency?
	A. Lengthen it
	B. Add capacity hats to the ends of the radiating wires
	C. Shorten it
	D. Insert coils in series with radiating wires


35.	Which of the following is true of PL-259 type coax connectors?
	A. They are a bayonet type connector
	B. The are commonly used at HF frequencies
	C. They are good for UHF frequencies
	D. They are water tight

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