COSC 325 - Electrical Exam (Latest Update
) Questions & Answers {Grade
A} 100% Correct
Conductor - correct answer material that has very little resistance and permits
electrons to move through it easily
Insulator - correct answer any material that has a very high resistance and resists the
flow of electrons
Generated electricity - correct answer the alternating current (AC) created by power
plant generator
Three phase - correct answer three distinct wave cycles, 3-wires, 415V
,Single phase - correct answer power supply has one distinct wave cycle, single wire,
230V
Service panel - correct answer is an electrical device containing fuses or circuit
breakers for protecting the individual circuits of a residence and serves as a means of
disconnecting the entire residence from the distribution system
Circuit - correct answer a complete path (when on) for current to take and includes
electrical control devices, circuit protection, conductors, and load(s)
System ground - correct answer is a special circuit designed to protect the entire
distribution system of a residence
Equipment ground - correct answer is a circuit designed to protect individual
components connected to an electrical system
,2 methods for grounding an electrical system - correct answer metal water pipe and
alternative electrode
Electrode - correct answer is a long metal rod used to make contact with the earth for
grounding purposes
Fuse - correct answer an electric overcurrent protection device used to limit the rate
of current flow in a circuit
Circuit breaker - correct answer is an overcurrent protection device with a mechanical
mechanism that may manually or automatically open a circuit when an overload
condition or short circuit occur
, Ground Fault Circuit Interrupter (GFCI) - correct answer a fast-acting receptacle that
detects low levels of leakage current to ground and opens the circuit in response to
the leakage
LOTO - correct answer Lockout/Tagout
National Electrical Code (NEC) - correct answer is a book of electrical standards that
indicate how electrical systems must be installed and how work must be performed.
Standards for residential, commercial, and industrial electrical work
National Fire Protection Association: NFPA 70E - correct answer standard for
electrical safety in a workplace, addresses electrical safety requirements for
employee workplaces that are necessary for safeguarding employees in pursuit of
gainful employment
) Questions & Answers {Grade
A} 100% Correct
Conductor - correct answer material that has very little resistance and permits
electrons to move through it easily
Insulator - correct answer any material that has a very high resistance and resists the
flow of electrons
Generated electricity - correct answer the alternating current (AC) created by power
plant generator
Three phase - correct answer three distinct wave cycles, 3-wires, 415V
,Single phase - correct answer power supply has one distinct wave cycle, single wire,
230V
Service panel - correct answer is an electrical device containing fuses or circuit
breakers for protecting the individual circuits of a residence and serves as a means of
disconnecting the entire residence from the distribution system
Circuit - correct answer a complete path (when on) for current to take and includes
electrical control devices, circuit protection, conductors, and load(s)
System ground - correct answer is a special circuit designed to protect the entire
distribution system of a residence
Equipment ground - correct answer is a circuit designed to protect individual
components connected to an electrical system
,2 methods for grounding an electrical system - correct answer metal water pipe and
alternative electrode
Electrode - correct answer is a long metal rod used to make contact with the earth for
grounding purposes
Fuse - correct answer an electric overcurrent protection device used to limit the rate
of current flow in a circuit
Circuit breaker - correct answer is an overcurrent protection device with a mechanical
mechanism that may manually or automatically open a circuit when an overload
condition or short circuit occur
, Ground Fault Circuit Interrupter (GFCI) - correct answer a fast-acting receptacle that
detects low levels of leakage current to ground and opens the circuit in response to
the leakage
LOTO - correct answer Lockout/Tagout
National Electrical Code (NEC) - correct answer is a book of electrical standards that
indicate how electrical systems must be installed and how work must be performed.
Standards for residential, commercial, and industrial electrical work
National Fire Protection Association: NFPA 70E - correct answer standard for
electrical safety in a workplace, addresses electrical safety requirements for
employee workplaces that are necessary for safeguarding employees in pursuit of
gainful employment
