SACA C 202 ELECTRIC MOTOR
CONTROL SYSTEMS PRACTICE SET
2026 TESTED QUESTIONS AND
VERIFIED ANSWERS
◉ Can you name the common standards associated with electrical
control? Answer: National Electrical Code (NEC)
National Electrical Manufacturer's Association (NEMA)
International Electrotechnical Commission (IEC)
Underwriter's Laboratories (UL)
Occupational Safety and Health Administration (OSHA)
◉ Can you state the ten basic rules of electrical safety? Answer: -
Remove all metal jewelry
-Be aware of conditions before working on a piece of equipment
-Do not rely on safety devices to protect you
-Never remove the grounding prong on an AC plug
-Always keep your tools and test equipment organized
-Do not work on wet floors
-Work with one hand
-Always move slowly and deliberately
-Do not work alone
-Avoid distractions
, ◉ Can you explain the operation of three-phase power? Answer: Three-
phase power is electrical transmitted in three separate phases. An
alternator that has three main windings operating 120 degrees apart
creates the three phases.
◉ Do you know the function of neutral in electrical power? Answer: A
neutral is a conductor that provides a common return path to the source
for the conductors in a system.
◉ Can you explain the operation of grounded and ungrounded systems?
Answer: The difference between the operation of a grounded system and
an ungrounded system is seen in their reactions to a ground fault. A
ground fault occurs when one of the phases becomes grounded.
If the ground fault occurs on one of the phases pf a grounded system, the
circuit protection devices will open the circuit because of the circuit
because of the increased current draw. This will cause the power to shut
down.
If a ground fault occurs in one of the phases of an ungrounded system,
the operation of the circuit will not be interrupted.
◉ Do you know how different types of overcurrent protection work?
Answer: A fusible disconnect has a fuse for each phase and a manually
operated switch that will disconnect all phases at once.
A circuit breaker must be able to open all phases when it trips. It must
also have a means of manually disconnecting the motor and the
controller from the line.
CONTROL SYSTEMS PRACTICE SET
2026 TESTED QUESTIONS AND
VERIFIED ANSWERS
◉ Can you name the common standards associated with electrical
control? Answer: National Electrical Code (NEC)
National Electrical Manufacturer's Association (NEMA)
International Electrotechnical Commission (IEC)
Underwriter's Laboratories (UL)
Occupational Safety and Health Administration (OSHA)
◉ Can you state the ten basic rules of electrical safety? Answer: -
Remove all metal jewelry
-Be aware of conditions before working on a piece of equipment
-Do not rely on safety devices to protect you
-Never remove the grounding prong on an AC plug
-Always keep your tools and test equipment organized
-Do not work on wet floors
-Work with one hand
-Always move slowly and deliberately
-Do not work alone
-Avoid distractions
, ◉ Can you explain the operation of three-phase power? Answer: Three-
phase power is electrical transmitted in three separate phases. An
alternator that has three main windings operating 120 degrees apart
creates the three phases.
◉ Do you know the function of neutral in electrical power? Answer: A
neutral is a conductor that provides a common return path to the source
for the conductors in a system.
◉ Can you explain the operation of grounded and ungrounded systems?
Answer: The difference between the operation of a grounded system and
an ungrounded system is seen in their reactions to a ground fault. A
ground fault occurs when one of the phases becomes grounded.
If the ground fault occurs on one of the phases pf a grounded system, the
circuit protection devices will open the circuit because of the circuit
because of the increased current draw. This will cause the power to shut
down.
If a ground fault occurs in one of the phases of an ungrounded system,
the operation of the circuit will not be interrupted.
◉ Do you know how different types of overcurrent protection work?
Answer: A fusible disconnect has a fuse for each phase and a manually
operated switch that will disconnect all phases at once.
A circuit breaker must be able to open all phases when it trips. It must
also have a means of manually disconnecting the motor and the
controller from the line.
