CFESA ELECTRICAL
CFESA ELECTRICAL PRACTICE TEST
2025
A capacitor start motor should be used in what applications? -Correct Answer ✔used for
heavy-duty applications requiring high starting torque. refrigerator compressors, pumps,
and conveyors.
You have 120 V super warmer that is not heating. Your meter reads 120 V from each
side of the element to the ground. The voltage across the element reads 0 V. What is
the issue? -Correct Answer ✔Open neutral after the element
If you check each side of an element terminal to ground and read 120 V does that mean
the element has voltage to it? -Correct Answer ✔No measure voltage across the load,
not from each terminal to ground
A ground fault breaker is considered more reliable than a ground fault receptacle. T or
F? -Correct Answer ✔True
A thermostat has a differential of 5°F. This means: -Correct Answer ✔the temperature
needs to drop 5 degrees below the set point before the heating system turns on
Wall receptacles failed due to: -Correct Answer ✔loose wires, overloaded circuits
(tripped breakers), damaged internal components, wear and tear from frequent use,
exposure to moisture, or physical damage which can lead to poor connections or short
circuits.
It is still possible to get shocked by touching the casing of a piece of equipment if it is
properly grounded. T or F? -Correct Answer ✔False
Before working on electrical equipment with the power on: -Correct Answer ✔Proper
PPE must be worn, example of this is linesman's gloves
Add 240 V range connected to a 208 V power supply will: -Correct Answer ✔it will likely
operate with reduced power and potentially experience issues like longer cooking times,
decreased heating efficiency, and could potentially be damaged over time
AC power has a negative and a positive line. T or F? -Correct Answer ✔False, it has a
hot and a neutral
Which formula should you use to determine the power consumed by a 15 ohm heater
element with 8 A of current flowing through it? -Correct Answer ✔P= I x I x R
A hot line in an AC power supply contains 120 V. T or F? -Correct Answer ✔False, 120
volts is the difference in potential between the hot line and neutral.
CFESA ELECTRICAL
, CFESA ELECTRICAL
On the ohms law wheel what does P stand for? -Correct Answer ✔Power
Line voltage is the potential difference between: -Correct Answer ✔any two lines and
phases in a three-phase electrical system; essentially, the voltage measured between
two live wires in a power circuit.
Prefix Milli means: -Correct Answer ✔1/1000
The total resistance of a unit but the 230 amp heating elements connected in a series is:
-Correct Answer ✔The total sum of the individual resistances- RT= R1+R2+R3...
The total resistance in an parallel circuit is called: -Correct Answer ✔1/RT= 1/R1+1/R2...
Power defined by the ohms law formula: -Correct Answer ✔Amount of electrical energy
used
Any thermostat that fails in a closed contact position: -Correct Answer ✔Most likely
carried an excessive load. The thermostat was used in a power duty application or the
thermostat was involved in a short-circuited load.
If a blower keeps coming off the motor shaft after it runs for a while: -Correct Answer
✔This usually indicates a worn hub on the blade
Higher voltage supplies are used to: -Correct Answer ✔Decrease wire size and save
costs, they also are needed for modern luxuries such as Central A/C, driers, etc.
A wild leg must always be connected where on the terminal block on a three phase
equipment? -Correct Answer ✔A "wild leg" (also called a "high leg") in a three-phase
system should always be connected to the designated "B" phase terminal on a terminal
block, as per standard electrical practice, which usually marks the phase with the higher
voltage to neutral as "B" phase, it must not go on the 120 v terminal.
Voltage between the Hotline and neutral of a 208 V power supply: -Correct Answer
✔120V
On the ohms law wheel what does R stand for? -Correct Answer ✔Resistance(ohms)
When your customer leans over metal counter and touches the toaster a shark is
received. You have checked the toaster and the ground circuit is complete. You should:
-Correct Answer ✔Unplug and inspect the grounding
CFESA ELECTRICAL
CFESA ELECTRICAL PRACTICE TEST
2025
A capacitor start motor should be used in what applications? -Correct Answer ✔used for
heavy-duty applications requiring high starting torque. refrigerator compressors, pumps,
and conveyors.
You have 120 V super warmer that is not heating. Your meter reads 120 V from each
side of the element to the ground. The voltage across the element reads 0 V. What is
the issue? -Correct Answer ✔Open neutral after the element
If you check each side of an element terminal to ground and read 120 V does that mean
the element has voltage to it? -Correct Answer ✔No measure voltage across the load,
not from each terminal to ground
A ground fault breaker is considered more reliable than a ground fault receptacle. T or
F? -Correct Answer ✔True
A thermostat has a differential of 5°F. This means: -Correct Answer ✔the temperature
needs to drop 5 degrees below the set point before the heating system turns on
Wall receptacles failed due to: -Correct Answer ✔loose wires, overloaded circuits
(tripped breakers), damaged internal components, wear and tear from frequent use,
exposure to moisture, or physical damage which can lead to poor connections or short
circuits.
It is still possible to get shocked by touching the casing of a piece of equipment if it is
properly grounded. T or F? -Correct Answer ✔False
Before working on electrical equipment with the power on: -Correct Answer ✔Proper
PPE must be worn, example of this is linesman's gloves
Add 240 V range connected to a 208 V power supply will: -Correct Answer ✔it will likely
operate with reduced power and potentially experience issues like longer cooking times,
decreased heating efficiency, and could potentially be damaged over time
AC power has a negative and a positive line. T or F? -Correct Answer ✔False, it has a
hot and a neutral
Which formula should you use to determine the power consumed by a 15 ohm heater
element with 8 A of current flowing through it? -Correct Answer ✔P= I x I x R
A hot line in an AC power supply contains 120 V. T or F? -Correct Answer ✔False, 120
volts is the difference in potential between the hot line and neutral.
CFESA ELECTRICAL
, CFESA ELECTRICAL
On the ohms law wheel what does P stand for? -Correct Answer ✔Power
Line voltage is the potential difference between: -Correct Answer ✔any two lines and
phases in a three-phase electrical system; essentially, the voltage measured between
two live wires in a power circuit.
Prefix Milli means: -Correct Answer ✔1/1000
The total resistance of a unit but the 230 amp heating elements connected in a series is:
-Correct Answer ✔The total sum of the individual resistances- RT= R1+R2+R3...
The total resistance in an parallel circuit is called: -Correct Answer ✔1/RT= 1/R1+1/R2...
Power defined by the ohms law formula: -Correct Answer ✔Amount of electrical energy
used
Any thermostat that fails in a closed contact position: -Correct Answer ✔Most likely
carried an excessive load. The thermostat was used in a power duty application or the
thermostat was involved in a short-circuited load.
If a blower keeps coming off the motor shaft after it runs for a while: -Correct Answer
✔This usually indicates a worn hub on the blade
Higher voltage supplies are used to: -Correct Answer ✔Decrease wire size and save
costs, they also are needed for modern luxuries such as Central A/C, driers, etc.
A wild leg must always be connected where on the terminal block on a three phase
equipment? -Correct Answer ✔A "wild leg" (also called a "high leg") in a three-phase
system should always be connected to the designated "B" phase terminal on a terminal
block, as per standard electrical practice, which usually marks the phase with the higher
voltage to neutral as "B" phase, it must not go on the 120 v terminal.
Voltage between the Hotline and neutral of a 208 V power supply: -Correct Answer
✔120V
On the ohms law wheel what does R stand for? -Correct Answer ✔Resistance(ohms)
When your customer leans over metal counter and touches the toaster a shark is
received. You have checked the toaster and the ground circuit is complete. You should:
-Correct Answer ✔Unplug and inspect the grounding
CFESA ELECTRICAL
