CFESA ELECTRICAL PRACTICE TEST EXAM NEWEST
2026 ACTUAL EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) ALL
ANSWERED {200 Q & A} ALREADY GRADED A+ |
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What is the switch arrangement on a Robertshaw EA
thermostat? - ✔✔✔ Correct Answer > SPST
What is a PSC motor? - ✔✔✔ Correct Answer > Permanent Split
Capacitor
What are the 3 different kinds of temperature sensors that can
be used with a solid state control? - ✔✔✔ Correct Answer >
Thermocouple, thermistor, and RTD.
Why are thermistors the most popular of all the temperature
sensors? - ✔✔✔ Correct Answer > less expensive
What is the major downfall of a single probe electro mechanical
liquid level control? - ✔✔✔ Correct Answer > Fast cycling as soon as
the water uncovers the probe.
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Contacts that are melted or welded together indicate what? - ✔✔✔
Correct Answer > short circuit
6 What is the usual cause for a burned out contactor coil? - ✔✔✔
Correct Answer > Warped movable contact carried
What causes carbon build up around the body of a contactor? -
✔✔✔ Correct Answer > Arcing
Do contactor contacts that look dark in color necessarily mean
that the contactor needs to be replaced? - ✔✔✔ Correct Answer > No
What is the difference between an overload and short circuit as
related to fuses? - ✔✔✔ Correct Answer > Overloads melt out the fuse
link in one place, a short opens the link in multiple places
Motor circuits require what types of fuses - ✔✔✔ Correct Answer >
Time delay
The starting current of a motor can be how much greater than
the normal full load current - ✔✔✔ Correct Answer > 5 to 6 times
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Since a short circuit can cause so much physical damage, what
aspect of a fusses design is critical, if a short circuit should
occur - ✔✔✔ Correct Answer > Current limit rating
What is the advantage of a current limiting fuse? - ✔✔✔ Correct
Answer > Can you open the circuit before the first peak voltage?
In a dual element time delay, fuse, what happens inside the fuse
if an overload occurs - ✔✔✔ Correct Answer > Fusible pin melts out
When replacing a main fuse, what kind of fuse should always be
used and why? - ✔✔✔ Correct Answer > Time delay
If a fuse continuously blows, how do you narrow down the
problem? - ✔✔✔ Correct Answer > A meter on the line to find out if the
problem is a short circuit or overload
Confuses just failed due to old age - ✔✔✔ Correct Answer > Yes
If a fuse blows often, could it be the wrong type of fuse - ✔✔✔
Correct Answer > Yes