SACA C-202 Electric Motor Control Systems Exam
Questions and Answers (2026) | Comprehensive
Review with Detailed Rationales | A+ Verified
• Common standards associated with electrical control . Answer: NEMA, IEC, and
NEC standards.
• Ten basic rules of electrical safety . Answer: Includes de-energizing circuits,
using PPE, verifying lockout/tagout, testing before touch, and using insulated
tools, among others.
• Lockout/tagout system order . Answer: Notify, shut down, isolate energy, apply
LOTO device, release stored energy, and verify zero energy.
• Three-phase power operation . Answer: Three AC voltages 120° out of phase
provide continuous power with higher efficiency.
• Function of neutral in electrical power . Answer: Serves as a return path for
current in unbalanced systems and maintains voltage stability.
• Using a digital multimeter . Answer: Set the function (volts, ohms, etc.), connect
leads properly, and read measurements.
• Grounded and ungrounded systems . Answer: Grounded systems have one
conductor connected to ground for safety; ungrounded systems do not, which can
delay fault detection.
• Overcurrent protection devices . Answer: Fuses melt under excess current;
breakers trip; overloads respond to sustained heat or current.
, • Three-phase motor operation . Answer: Uses rotating magnetic fields from three-
phase power to turn the rotor.
• Interpreting motor's nameplate data . Answer: Includes voltage, current, RPM,
phase, service factor, and efficiency.
• Connecting dual-voltage three-phase motor . Answer: Use parallel connection for
low voltage (e.g., 230V) and series for high voltage (e.g., 460V).
• Functions of motor control . Answer: Starting, stopping, reversing, speed control,
and overload protection.
• Motor control relay circuit interpretation . Answer: Understand how control
relays activate coils and change contact states to control the motor.
• Operation of different types of motor starters . Answer: Manual, magnetic, and
solid-state starters vary by control type and application.
• Low-voltage protection . Answer: Shuts off the motor if voltage drops and
prevents automatic restart when voltage returns.
• Types of motor overload devices . Answer: Thermal (bimetallic), magnetic, and
electronic overloads.
• Motor control and transformer schematic symbols . Answer: Symbols represent
transformer coils, cores, and taps.
Questions and Answers (2026) | Comprehensive
Review with Detailed Rationales | A+ Verified
• Common standards associated with electrical control . Answer: NEMA, IEC, and
NEC standards.
• Ten basic rules of electrical safety . Answer: Includes de-energizing circuits,
using PPE, verifying lockout/tagout, testing before touch, and using insulated
tools, among others.
• Lockout/tagout system order . Answer: Notify, shut down, isolate energy, apply
LOTO device, release stored energy, and verify zero energy.
• Three-phase power operation . Answer: Three AC voltages 120° out of phase
provide continuous power with higher efficiency.
• Function of neutral in electrical power . Answer: Serves as a return path for
current in unbalanced systems and maintains voltage stability.
• Using a digital multimeter . Answer: Set the function (volts, ohms, etc.), connect
leads properly, and read measurements.
• Grounded and ungrounded systems . Answer: Grounded systems have one
conductor connected to ground for safety; ungrounded systems do not, which can
delay fault detection.
• Overcurrent protection devices . Answer: Fuses melt under excess current;
breakers trip; overloads respond to sustained heat or current.
, • Three-phase motor operation . Answer: Uses rotating magnetic fields from three-
phase power to turn the rotor.
• Interpreting motor's nameplate data . Answer: Includes voltage, current, RPM,
phase, service factor, and efficiency.
• Connecting dual-voltage three-phase motor . Answer: Use parallel connection for
low voltage (e.g., 230V) and series for high voltage (e.g., 460V).
• Functions of motor control . Answer: Starting, stopping, reversing, speed control,
and overload protection.
• Motor control relay circuit interpretation . Answer: Understand how control
relays activate coils and change contact states to control the motor.
• Operation of different types of motor starters . Answer: Manual, magnetic, and
solid-state starters vary by control type and application.
• Low-voltage protection . Answer: Shuts off the motor if voltage drops and
prevents automatic restart when voltage returns.
• Types of motor overload devices . Answer: Thermal (bimetallic), magnetic, and
electronic overloads.
• Motor control and transformer schematic symbols . Answer: Symbols represent
transformer coils, cores, and taps.
