Ham Radio Question Pool - Technician Class
For Beginning Study -- only correct answer
shown
T0A01
Which of the following is a safety hazard of a 12-volt storage battery? {ANSW} B.
Shorting the terminals can cause burns, fire, or an explosion
T0A02 How does current flowing through the body cause a health hazard? {ANSW} (D)
All of these choices are correct
(heats tissue, disrupts electrical functions of the cells & involuntary muscle contractions)
T0A03 What is connected to the green wire in a three-wire electrical AC plug? {ANSW}
(C) Safety Ground
T0A04 What is the purpose of a fuse in an electrical circuit? {ANSW} (B) To interrupt
power in case of overload
T0A05 Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?
{ANSW} (C) Excessive current could cause a fire
T0A06 What is a good way to guard against electrical shock at your station? {ANSW}
(D) All these choices are correct
(use 3-wire AC cords, connect to a ground & use a ground-fault interrupter)
T0A07 Which of these precautions should be taken when installing devices for lightning
protection in a coaxial cable feedline? {ANSW} (D) Ground all the protectors to a
common plate which in turn is connected to an external ground
T0A08
What safety equipment should always be included in home-built equipment that is
powered from 120V AC power circuits? {ANSW} A. A fuse or circuit breaker in series
with the AC hot conductor
T0A09 What kind of hazard is presented by a conventional 12-volt storage battery?
{ANSW} (C) Explosive gas can collect if not properly vented
,T0A10 What can happen if a lead-acid storage battery is charged or discharged too
quickly? {ANSW} (A) The battery could overheat and give off flammable gas or
explode.
T0A11
What kind of hazard might exist in a power supply when it is turned off and
disconnected? {ANSW} D. You might receive an electric shock from the charged stored
in large capacitors
T0A12 What kind of hazard might exist in a power supply when it is turned off and
disconnected? {ANSW} (D) You might receive an electric shock from stored charge in
the large capacitors.
T0A13 What safety equipment should always be included in home-built equipment that
is powered from 120V AC power circuits? {ANSW} (A) A fuse or circuit breaker in
series with the AC "hot" conductor
T0B01 When should members of a tower work team wear a hard hat and safety
glasses? {ANSW} (C) At all times when any work is being done on the tower.
T0B02 What is a good precaution to observe before climbing an antenna tower?
{ANSW} (C) Put on a climbing harness and safety glasses.
T0B03 Under what circumstances is it safe to climb a tower without a helper or
observer? {ANSW} (D) Never
T0B04 Which of the following is an important safety precaution to observe when putting
up an antenna tower? {ANSW} (C) Look for and stay clear of any overhead electrical
wires
T0B05 What is the purpose of a gin pole? {ANSW} (C) To lift tower sections or
antennas
T0B06 What is the minimum safe distance from a power line to allow when installing an
antenna? {ANSW} (D) So that if the antenna falls unexpectedly, no part of it can come
closer than 10 feet to the power wires
T0B07 Which of the following is an important safety rule to remember when using a
crank-up tower? {ANSW} (C) This type of tower must never be climbed unless it is in
the fully retracted position
T0B08 What is considered to be a proper grounding method for a tower? {ANSW} (C)
Separate eight-foot long ground rods for each tower leg, bonded to the tower and each
other
,T0B09 Why should you avoid attaching an antenna to a utility pole? {ANSW} (C) The
antenna could contact high-voltage power wires
T0B10 Which of the following is true concerning grounding conductors used for lightning
protection? {ANSW} (C) Sharp bends must be avoided
T0B11 Which of the following establishes grounding requirements for an amateur radio
tower or antenna? {ANSW} (B) Local electrical codes
T0C01 What type of radiation are VHF and UHF radio signals? {ANSW} (D) Non-
ionizing radiation
T0C02 Which of the following frequencies has the lowest Maximum Permissible
Exposure limit? {ANSW} (B) 50 MHz
T0C03 What is the maximum power level that an amateur radio station may use at VHF
frequencies before an RF exposure evaluation is required? {ANSW} (C) 50 watts PEP
at the antenna
T0C04 What factors affect the RF exposure of people near an amateur station antenna?
{ANSW} (D) All of these choices are correct
(Frequency & power level, Distance from the antenna to the person, radiation pattern of
the antenna)
T0C05 Why do exposure limits vary with frequency? {ANSW} (D) The human body
absorbs more RF energy at some frequencies than at others
T0C06 Which of the following is an acceptable method to determine that your station
complies with FCC RF exposure regulations? {ANSW} (D) All of these choices are
correct
(Calculation from FCC Bulletin, Calculation from computer modeling & field
measurement with calibrated equipment)
T0C07 What could happen if a person accidentally touched your antenna while you
were transmitting? {ANSW} (B) They might receive a painful RF burn
T0C08 Which of the following actions might amateur operators take to prevent exposure
to RF radiation in excess of FCC-supplied limits? {ANSW} (A) Relocate antennas
T0C09 How can you make sure your station stays in compliance with RF safety
regulations? {ANSW} (B) By re-evaluating the station whenever an item of equipment is
changed
T0C10 Why is duty cycle one of the factors used to determine safe RF radiation
exposure levels? {ANSW} (A) It affects the average exposure of people to radiation
, T0C11
What is the definition of duty cycle during the averaging time for RF exposure? {ANSW}
A. The difference between the lowest power output and the highest power output of a
transmitter
T1A02 What agency regulates and enforces the rules for the Amateur Radio Service in
the United States? {ANSW} (C) The FCC
T1A03 Which part of the FCC rules contains the rules and regulations governing the
Amateur Radio Service? {ANSW} (D) Part 97
T1A04 Which of the following meets the FCC definition of harmful interference?
{ANSW} (C) That which seriously degrades, obstructs, or repeatedly interrupts a radio
communication service operating in accordance with the Radio Regulations
T1A05
Which of the following is a purpose of the Amateur Radio Service rules and regulations
as defined by the FCC? {ANSW} A. Enhancing international goodwill
T1A06
Which of the following services are protected from interference by amateur signals
under all circumstances? {ANSW} D.Radionavigation Service
T1A07 What is the FCC Part 97 definition of telemetry? {ANSW} (C) A one-way
transmission of measurements at a distance from the measuring instrument
T1A08 Which of the following entities recommends transmit/receive channels and other
parameters for auxiliary and repeater stations? {ANSW} (B) Frequency Coordinator
T1A09 Who selects a Frequency Coordinator? {ANSW} (C) Amateur operators in a
local or regional area whose stations are eligible to be auxiliary or repeater stations
T1A10 What is the FCC Part 97 definition of an amateur station? {ANSW} (A) A station
in an Amateur Radio Service consisting of the apparatus necessary for carrying on radio
communications
T1A11 (B) [97.101 (d)]
When is willful interference to other amateur radio stations permitted? {ANSW} B. At no
time
T1B01 What is the ITU? {ANSW} (B) A United Nations agency for information and
communication technology issues
T1B02 (A) [97.301]
For Beginning Study -- only correct answer
shown
T0A01
Which of the following is a safety hazard of a 12-volt storage battery? {ANSW} B.
Shorting the terminals can cause burns, fire, or an explosion
T0A02 How does current flowing through the body cause a health hazard? {ANSW} (D)
All of these choices are correct
(heats tissue, disrupts electrical functions of the cells & involuntary muscle contractions)
T0A03 What is connected to the green wire in a three-wire electrical AC plug? {ANSW}
(C) Safety Ground
T0A04 What is the purpose of a fuse in an electrical circuit? {ANSW} (B) To interrupt
power in case of overload
T0A05 Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?
{ANSW} (C) Excessive current could cause a fire
T0A06 What is a good way to guard against electrical shock at your station? {ANSW}
(D) All these choices are correct
(use 3-wire AC cords, connect to a ground & use a ground-fault interrupter)
T0A07 Which of these precautions should be taken when installing devices for lightning
protection in a coaxial cable feedline? {ANSW} (D) Ground all the protectors to a
common plate which in turn is connected to an external ground
T0A08
What safety equipment should always be included in home-built equipment that is
powered from 120V AC power circuits? {ANSW} A. A fuse or circuit breaker in series
with the AC hot conductor
T0A09 What kind of hazard is presented by a conventional 12-volt storage battery?
{ANSW} (C) Explosive gas can collect if not properly vented
,T0A10 What can happen if a lead-acid storage battery is charged or discharged too
quickly? {ANSW} (A) The battery could overheat and give off flammable gas or
explode.
T0A11
What kind of hazard might exist in a power supply when it is turned off and
disconnected? {ANSW} D. You might receive an electric shock from the charged stored
in large capacitors
T0A12 What kind of hazard might exist in a power supply when it is turned off and
disconnected? {ANSW} (D) You might receive an electric shock from stored charge in
the large capacitors.
T0A13 What safety equipment should always be included in home-built equipment that
is powered from 120V AC power circuits? {ANSW} (A) A fuse or circuit breaker in
series with the AC "hot" conductor
T0B01 When should members of a tower work team wear a hard hat and safety
glasses? {ANSW} (C) At all times when any work is being done on the tower.
T0B02 What is a good precaution to observe before climbing an antenna tower?
{ANSW} (C) Put on a climbing harness and safety glasses.
T0B03 Under what circumstances is it safe to climb a tower without a helper or
observer? {ANSW} (D) Never
T0B04 Which of the following is an important safety precaution to observe when putting
up an antenna tower? {ANSW} (C) Look for and stay clear of any overhead electrical
wires
T0B05 What is the purpose of a gin pole? {ANSW} (C) To lift tower sections or
antennas
T0B06 What is the minimum safe distance from a power line to allow when installing an
antenna? {ANSW} (D) So that if the antenna falls unexpectedly, no part of it can come
closer than 10 feet to the power wires
T0B07 Which of the following is an important safety rule to remember when using a
crank-up tower? {ANSW} (C) This type of tower must never be climbed unless it is in
the fully retracted position
T0B08 What is considered to be a proper grounding method for a tower? {ANSW} (C)
Separate eight-foot long ground rods for each tower leg, bonded to the tower and each
other
,T0B09 Why should you avoid attaching an antenna to a utility pole? {ANSW} (C) The
antenna could contact high-voltage power wires
T0B10 Which of the following is true concerning grounding conductors used for lightning
protection? {ANSW} (C) Sharp bends must be avoided
T0B11 Which of the following establishes grounding requirements for an amateur radio
tower or antenna? {ANSW} (B) Local electrical codes
T0C01 What type of radiation are VHF and UHF radio signals? {ANSW} (D) Non-
ionizing radiation
T0C02 Which of the following frequencies has the lowest Maximum Permissible
Exposure limit? {ANSW} (B) 50 MHz
T0C03 What is the maximum power level that an amateur radio station may use at VHF
frequencies before an RF exposure evaluation is required? {ANSW} (C) 50 watts PEP
at the antenna
T0C04 What factors affect the RF exposure of people near an amateur station antenna?
{ANSW} (D) All of these choices are correct
(Frequency & power level, Distance from the antenna to the person, radiation pattern of
the antenna)
T0C05 Why do exposure limits vary with frequency? {ANSW} (D) The human body
absorbs more RF energy at some frequencies than at others
T0C06 Which of the following is an acceptable method to determine that your station
complies with FCC RF exposure regulations? {ANSW} (D) All of these choices are
correct
(Calculation from FCC Bulletin, Calculation from computer modeling & field
measurement with calibrated equipment)
T0C07 What could happen if a person accidentally touched your antenna while you
were transmitting? {ANSW} (B) They might receive a painful RF burn
T0C08 Which of the following actions might amateur operators take to prevent exposure
to RF radiation in excess of FCC-supplied limits? {ANSW} (A) Relocate antennas
T0C09 How can you make sure your station stays in compliance with RF safety
regulations? {ANSW} (B) By re-evaluating the station whenever an item of equipment is
changed
T0C10 Why is duty cycle one of the factors used to determine safe RF radiation
exposure levels? {ANSW} (A) It affects the average exposure of people to radiation
, T0C11
What is the definition of duty cycle during the averaging time for RF exposure? {ANSW}
A. The difference between the lowest power output and the highest power output of a
transmitter
T1A02 What agency regulates and enforces the rules for the Amateur Radio Service in
the United States? {ANSW} (C) The FCC
T1A03 Which part of the FCC rules contains the rules and regulations governing the
Amateur Radio Service? {ANSW} (D) Part 97
T1A04 Which of the following meets the FCC definition of harmful interference?
{ANSW} (C) That which seriously degrades, obstructs, or repeatedly interrupts a radio
communication service operating in accordance with the Radio Regulations
T1A05
Which of the following is a purpose of the Amateur Radio Service rules and regulations
as defined by the FCC? {ANSW} A. Enhancing international goodwill
T1A06
Which of the following services are protected from interference by amateur signals
under all circumstances? {ANSW} D.Radionavigation Service
T1A07 What is the FCC Part 97 definition of telemetry? {ANSW} (C) A one-way
transmission of measurements at a distance from the measuring instrument
T1A08 Which of the following entities recommends transmit/receive channels and other
parameters for auxiliary and repeater stations? {ANSW} (B) Frequency Coordinator
T1A09 Who selects a Frequency Coordinator? {ANSW} (C) Amateur operators in a
local or regional area whose stations are eligible to be auxiliary or repeater stations
T1A10 What is the FCC Part 97 definition of an amateur station? {ANSW} (A) A station
in an Amateur Radio Service consisting of the apparatus necessary for carrying on radio
communications
T1A11 (B) [97.101 (d)]
When is willful interference to other amateur radio stations permitted? {ANSW} B. At no
time
T1B01 What is the ITU? {ANSW} (B) A United Nations agency for information and
communication technology issues
T1B02 (A) [97.301]
