Electrical Systems Final Exam – Complete Exam Material
Materials that allow electricity to flow through them easily such as copper are called - correct
answer ✔✔Conductors
Materials that don't allow electricity to flow through them easily are called - correct answer
✔✔Insulators
This is the measurement of electric current or flow of electrtons - correct answer ✔✔Ampere
This is the measurement of electromotive force or potential difference - correct answer
✔✔Volts
This is the measurement of resistance to the flow of electricity - correct answer ✔✔Ohm
This is a measurement of energy used per unit of time - correct answer ✔✔Watt
What is the Ohms Law Formula - correct answer ✔✔V = IR
What is electricity? - correct answer ✔✔A type of energy fueled by the transferof electrons
from positive to negative
What is the difference between power and energy? - correct answer ✔✔Power is energy at a
specific time and energy includes a time constraint (Power * time)
In a series circuit how do you calculate total resistance? - correct answer ✔✔RT = R1 + R2 + R3
, In a parallel circuit how do you calculate total resistance? - correct answer ✔✔1/RT = 1/R1 +
1/R2 + 1/R3
What do the acronyms AC & DC stand for and what is the main difference between the two? -
correct answer ✔✔Alternating Current & Direct Current. Electrons flow in one direction in DC
and in AC they flow forward and then backward a little bit.
What is the function of the hot wire? - correct answer ✔✔The hot wire is the conductor
providing volts.
What is the function of the neutral wire? - correct answer ✔✔It provides return path for the
volts
What is one reason that you would use three phase power? - correct answer ✔✔It costs less to
transport, motors are smaller and cheaper and & three phase has consistent power
What are the two main reasons that we use AC current today? - correct answer ✔✔It is cheaper
and you can modify voltage
The tighter the coil is on the transformer - correct answer ✔✔the higher the voltage
A cycle within electricity goes from 0-360 degrees how many cycles in a second is standard in
the United States - correct answer ✔✔60 Hertz
What two principles are key to a transformer - correct answer ✔✔Electromagnetic &
Electromagnetic induction
Motors or computers on AC current systems can create an inductive load which caused a phase
shift between the voltage and the current, because of this what is the result to power supply? -
correct answer ✔✔Power is waster
Materials that allow electricity to flow through them easily such as copper are called - correct
answer ✔✔Conductors
Materials that don't allow electricity to flow through them easily are called - correct answer
✔✔Insulators
This is the measurement of electric current or flow of electrtons - correct answer ✔✔Ampere
This is the measurement of electromotive force or potential difference - correct answer
✔✔Volts
This is the measurement of resistance to the flow of electricity - correct answer ✔✔Ohm
This is a measurement of energy used per unit of time - correct answer ✔✔Watt
What is the Ohms Law Formula - correct answer ✔✔V = IR
What is electricity? - correct answer ✔✔A type of energy fueled by the transferof electrons
from positive to negative
What is the difference between power and energy? - correct answer ✔✔Power is energy at a
specific time and energy includes a time constraint (Power * time)
In a series circuit how do you calculate total resistance? - correct answer ✔✔RT = R1 + R2 + R3
, In a parallel circuit how do you calculate total resistance? - correct answer ✔✔1/RT = 1/R1 +
1/R2 + 1/R3
What do the acronyms AC & DC stand for and what is the main difference between the two? -
correct answer ✔✔Alternating Current & Direct Current. Electrons flow in one direction in DC
and in AC they flow forward and then backward a little bit.
What is the function of the hot wire? - correct answer ✔✔The hot wire is the conductor
providing volts.
What is the function of the neutral wire? - correct answer ✔✔It provides return path for the
volts
What is one reason that you would use three phase power? - correct answer ✔✔It costs less to
transport, motors are smaller and cheaper and & three phase has consistent power
What are the two main reasons that we use AC current today? - correct answer ✔✔It is cheaper
and you can modify voltage
The tighter the coil is on the transformer - correct answer ✔✔the higher the voltage
A cycle within electricity goes from 0-360 degrees how many cycles in a second is standard in
the United States - correct answer ✔✔60 Hertz
What two principles are key to a transformer - correct answer ✔✔Electromagnetic &
Electromagnetic induction
Motors or computers on AC current systems can create an inductive load which caused a phase
shift between the voltage and the current, because of this what is the result to power supply? -
correct answer ✔✔Power is waster
