5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
CFESA ELECTRICAL PRACTICE TEST (LATEST
TEST 2025) | ALL QUESTIONS AND CORRECT
ANSWERS | NEWEST EXAM | GRADED A+ |
VERIFIED ANSWERS \\BRAND NEW 2025
What do the following 1/1,000,000, 1000, 1,000,000, 1/1000
prefixes mean?
Micro,Kilo,Mega,Milli
If you know the wattage Divide the wattage by the voltage
and voltage, how do you
determine the current?
If you know the voltage Multiply voltage times current
and current how do you
determine the wattage?
If a circuit is supplied with .5 amps
100 volts and the total
resistance of the circuit is
200 ohms, how much
current will the circuit
draw?
… 1/60
,5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
If a piece of equipment is 4160 Watts
supplied 208 volts and the
amp meter clamped to the
hot line reads 20 amps,
what is the wattage of the
load?
How much voltage is in None
one hot line?
What happens to current It divides across resistances
in a parallel circuit?
what happens to voltage stays the same
across the loads in a
parallel circuit?
what happens to the it divides across the resistances
voltage across the loads
in a series circuit?
what happens to the It stays the same everywhere
current in a series circuit?
in a parallel circuit the the smallest resistance
total resistance of the
circuit will always be less
than what resistance?
how do you find the total add the resistances together
resistance of a series
circuit?
how do you find the total 1/RT = 1/R1 + 1/R2 + 1/R3 ...
resistance of a parallel
circuit?
If a circuit is wired parallel, 120 volts
and the supply voltage is
120 volts, each load must
be rated at what voltage?
… 2/60
,5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
if a circuit has two 240 volts
elements wired in series,
and each is rated at 120
volts, what voltage must
be supplied to the circuit
in order for the elements
to heat at full power?
What is the advantage of Lower Current and wire size
using higher voltages?
Is there a negative and No
positive line in AC power
supplies?
What is the voltage 230V
between two hot lines in a
230-volt system?
What is the voltage 208V
between two hot lines in a
208-volt system?
What is the voltage 115V
between a hot line and a
neutral in a 230-volt single
phase supply?
What is the voltage 120V
between a hot line and a
neutral in a 208-volt single
phase supply?
What is the accepted + or - 10%
maximum voltage
difference between the
name plate voltage and
the supplied voltage?
… 3/60
, 5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
What is the voltage 230V
between any two hot lines
of a 230 volt delta power
supply?
what is the voltage No usable voltage
between a hot line and
ground on a 240 volt delta
power supply
what is the voltage 230V
between any two hot lines
of a 230 volt grounded
delta power supply
draw a diagram of a 230
volt grounded delta power
supply. label all of the
voltages and the wild leg
what is the wild leg? leg with higher than 120v to ground or neutral
what danger is the wild high voltage that will damage 120v component in the
leg? circuit
what is the voltage 115v
between either of the non
wild leg hot lines and
neutral in a 230 volt
grounded delta system?
how do you determine the one that does not measure 120 volts to neutral or
which hot line is the wild ground
leg in a 250 volt grounded
delta power supply?
what danger is there when crossing the hot lines and supplying the wild leg to
replacing a three phase the wrong terminal in the unit.
circuit breaker in a 230
volt grounded delta
power supply?
… 4/60
CFESA ELECTRICAL PRACTICE TEST (LATEST
TEST 2025) | ALL QUESTIONS AND CORRECT
ANSWERS | NEWEST EXAM | GRADED A+ |
VERIFIED ANSWERS \\BRAND NEW 2025
What do the following 1/1,000,000, 1000, 1,000,000, 1/1000
prefixes mean?
Micro,Kilo,Mega,Milli
If you know the wattage Divide the wattage by the voltage
and voltage, how do you
determine the current?
If you know the voltage Multiply voltage times current
and current how do you
determine the wattage?
If a circuit is supplied with .5 amps
100 volts and the total
resistance of the circuit is
200 ohms, how much
current will the circuit
draw?
… 1/60
,5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
If a piece of equipment is 4160 Watts
supplied 208 volts and the
amp meter clamped to the
hot line reads 20 amps,
what is the wattage of the
load?
How much voltage is in None
one hot line?
What happens to current It divides across resistances
in a parallel circuit?
what happens to voltage stays the same
across the loads in a
parallel circuit?
what happens to the it divides across the resistances
voltage across the loads
in a series circuit?
what happens to the It stays the same everywhere
current in a series circuit?
in a parallel circuit the the smallest resistance
total resistance of the
circuit will always be less
than what resistance?
how do you find the total add the resistances together
resistance of a series
circuit?
how do you find the total 1/RT = 1/R1 + 1/R2 + 1/R3 ...
resistance of a parallel
circuit?
If a circuit is wired parallel, 120 volts
and the supply voltage is
120 volts, each load must
be rated at what voltage?
… 2/60
,5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
if a circuit has two 240 volts
elements wired in series,
and each is rated at 120
volts, what voltage must
be supplied to the circuit
in order for the elements
to heat at full power?
What is the advantage of Lower Current and wire size
using higher voltages?
Is there a negative and No
positive line in AC power
supplies?
What is the voltage 230V
between two hot lines in a
230-volt system?
What is the voltage 208V
between two hot lines in a
208-volt system?
What is the voltage 115V
between a hot line and a
neutral in a 230-volt single
phase supply?
What is the voltage 120V
between a hot line and a
neutral in a 208-volt single
phase supply?
What is the accepted + or - 10%
maximum voltage
difference between the
name plate voltage and
the supplied voltage?
… 3/60
, 5/15/25, 9:42 PM CFESA ELECTRICAL PRACTICE TEST (LATEST TEST 2025) | ALL QUESTIONS AND CORRECT ANSWERS | NEWEST EXAM |…
What is the voltage 230V
between any two hot lines
of a 230 volt delta power
supply?
what is the voltage No usable voltage
between a hot line and
ground on a 240 volt delta
power supply
what is the voltage 230V
between any two hot lines
of a 230 volt grounded
delta power supply
draw a diagram of a 230
volt grounded delta power
supply. label all of the
voltages and the wild leg
what is the wild leg? leg with higher than 120v to ground or neutral
what danger is the wild high voltage that will damage 120v component in the
leg? circuit
what is the voltage 115v
between either of the non
wild leg hot lines and
neutral in a 230 volt
grounded delta system?
how do you determine the one that does not measure 120 volts to neutral or
which hot line is the wild ground
leg in a 250 volt grounded
delta power supply?
what danger is there when crossing the hot lines and supplying the wild leg to
replacing a three phase the wrong terminal in the unit.
circuit breaker in a 230
volt grounded delta
power supply?
… 4/60
