Spectrum Field Tech Questions and
Answers
Current/ amperage - CORRECT ANSWER ->>Flow or movement of electric charges
Resistor - CORRECT ANSWER ->>a passive two-terminal material that impedes the flow of current
What is the most common workplace hazard involving electricity? - CORRECT ANSWER ->>Electrical
shocks
What is minimum approach distance? - CORRECT ANSWER ->>The shortest safe distance to keep from
energized conductors
CATV at the pole - CORRECT ANSWER ->>40''
CATV at the mid-span - CORRECT ANSWER ->>24''
CATV at the house - CORRECT ANSWER ->>12''
Live parts of electric equipment must be guarded against at how many volts? - CORRECT ANSWER ->>50
volts
What are the 2 kinds of grounds required by Safety standards for electrical systems? - CORRECT
ANSWER ->>Service and Equipment
What are circuit protection devices designed to do? - CORRECT ANSWER ->>Automatically limit or shift
off the flow of electricity in the event of a ground fault, overload, or short circuit in the wiring system
OSHA - CORRECT ANSWER ->>Occupational Safety and Health Administration
, CATV - CORRECT ANSWER ->>Community Antenna Television
HFC - CORRECT ANSWER ->>Hybrid Fiber Coax
What are the four sources of signals? - CORRECT ANSWER ->>Satellite, local origination, off air, fiber
optics
Forward - CORRECT ANSWER ->>54 MHz-1 GHz
G.B. - CORRECT ANSWER ->>Guard Band
Return - CORRECT ANSWER ->>5-42 MHz
Downstream (forward path) - CORRECT ANSWER ->>Forward signal from the headend to a customer
Upstream (reverse path) - CORRECT ANSWER ->>Return signal from a customer to the headend
Signal frequency - CORRECT ANSWER ->>Number of times that an RF signal completes a cycle from a
positive value to a negative value and back in one second
Ultrasonic frequencies are higher than what? - CORRECT ANSWER ->>Audio
Infrasonic frequencies are below what? - CORRECT ANSWER ->>Audio
How many hertz can the human ear hear? - CORRECT ANSWER ->>20-20,000
Per NTSC requirements, what is a tv channels bandwidth? - CORRECT ANSWER ->>6MHz
FCC (Federal Communications Commission) - CORRECT ANSWER ->>Gov agency responsible or
regulating and assigning frequencies throughout the US
Answers
Current/ amperage - CORRECT ANSWER ->>Flow or movement of electric charges
Resistor - CORRECT ANSWER ->>a passive two-terminal material that impedes the flow of current
What is the most common workplace hazard involving electricity? - CORRECT ANSWER ->>Electrical
shocks
What is minimum approach distance? - CORRECT ANSWER ->>The shortest safe distance to keep from
energized conductors
CATV at the pole - CORRECT ANSWER ->>40''
CATV at the mid-span - CORRECT ANSWER ->>24''
CATV at the house - CORRECT ANSWER ->>12''
Live parts of electric equipment must be guarded against at how many volts? - CORRECT ANSWER ->>50
volts
What are the 2 kinds of grounds required by Safety standards for electrical systems? - CORRECT
ANSWER ->>Service and Equipment
What are circuit protection devices designed to do? - CORRECT ANSWER ->>Automatically limit or shift
off the flow of electricity in the event of a ground fault, overload, or short circuit in the wiring system
OSHA - CORRECT ANSWER ->>Occupational Safety and Health Administration
, CATV - CORRECT ANSWER ->>Community Antenna Television
HFC - CORRECT ANSWER ->>Hybrid Fiber Coax
What are the four sources of signals? - CORRECT ANSWER ->>Satellite, local origination, off air, fiber
optics
Forward - CORRECT ANSWER ->>54 MHz-1 GHz
G.B. - CORRECT ANSWER ->>Guard Band
Return - CORRECT ANSWER ->>5-42 MHz
Downstream (forward path) - CORRECT ANSWER ->>Forward signal from the headend to a customer
Upstream (reverse path) - CORRECT ANSWER ->>Return signal from a customer to the headend
Signal frequency - CORRECT ANSWER ->>Number of times that an RF signal completes a cycle from a
positive value to a negative value and back in one second
Ultrasonic frequencies are higher than what? - CORRECT ANSWER ->>Audio
Infrasonic frequencies are below what? - CORRECT ANSWER ->>Audio
How many hertz can the human ear hear? - CORRECT ANSWER ->>20-20,000
Per NTSC requirements, what is a tv channels bandwidth? - CORRECT ANSWER ->>6MHz
FCC (Federal Communications Commission) - CORRECT ANSWER ->>Gov agency responsible or
regulating and assigning frequencies throughout the US
