SACA C-202 Electric Motor Control Systems ACTUAL EXAM
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01What is the primary purpose of grounding in an electrical system?
A. To increase circuit resistance and reduce current flow
B. To provide a low-resistance path for fault current, ensuring safety and protecting
equipment✓
C. To boost voltage during peak load demand
D. To eliminate the need for overcurrent protection devices
02Which set of standards is commonly associated with electrical control systems?
A. ANSI, ISO, and IEEE
B. NEMA, IEC, and NEC✓
C. BS, DIN, and SAE
D. UL, CSA, and OSHA
03Which of the following is one of the ten basic rules of electrical safety?
A. Always work on energised circuits to minimise downtime
,B. De-energise circuits, use PPE, verify lockout/tagout, test before touch, and use insulated
tools✓
C. Use bare hands when voltage is below 50V
D. Avoid using PPE when working in dry conditions
04What is the correct lockout/tagout (LOTO) system order?
A. Apply LOTO device → shut down → notify → verify zero energy
B. Isolate energy → apply LOTO → notify → shut down → verify
C. Notify → shut down → isolate energy → apply LOTO device → release stored energy → verify
zero energy✓
D. Shut down → verify zero energy → notify → apply LOTO → isolate energy
05How does three-phase power achieve continuous and efficient power delivery?
A. By using a single AC voltage with an amplified waveform
B. By using two AC voltages 180° out of phase
C. By using three AC voltages 120° out of phase, providing continuous power with higher
efficiency✓
D. By converting DC power into three separate pulses
06What is the function of the neutral conductor in an electrical power system?
A. Serves as a return path for current in unbalanced systems and maintains voltage stability✓
B. Increases total system voltage for heavy loads
C. Acts as a primary safety disconnect for the circuit
D. Provides additional phase voltage to single-phase loads
07What is the correct procedure for using a digital multimeter?
A. Connect leads first, then set the function dial while measuring
, B. Set the function (volts, ohms, etc.), connect leads properly, and read the measurements✓
C. Always start on the highest current range to prevent damage
D. Use only the AC voltage setting for all measurements
08What is the key difference between grounded and ungrounded systems?
A. Grounded systems have higher voltage than ungrounded systems
B. Ungrounded systems detect faults faster than grounded systems
C. Grounded systems have one conductor connected to ground for safety; ungrounded systems
do not, which can delay fault detection✓
D. Both systems are identical in operation but differ only in installation cost
09How do overcurrent protection devices — fuses, breakers, and overloads — each protect a
circuit?
A. Fuses trip, breakers melt, and overloads reset automatically under any fault condition
B. Fuses melt under excess current; breakers trip; overloads respond to sustained heat or
current✓
C. All three function identically but are selected based on voltage class
D. Fuses and breakers melt; overloads use only magnetic action
10 How does a three-phase motor produce rotational motion?
A. By using a commutator to reverse DC current direction in the rotor
B. By pulsing a single-phase supply to create intermittent magnetic fields
C. By using rotating magnetic fields from three-phase power to turn the rotor✓
D. By converting AC power to DC inside the motor housing
11Which data items are typically found when interpreting a motor's nameplate?
A. Serial number, manufacturing date, and warranty period
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
Instant Download Pdf
01What is the primary purpose of grounding in an electrical system?
A. To increase circuit resistance and reduce current flow
B. To provide a low-resistance path for fault current, ensuring safety and protecting
equipment✓
C. To boost voltage during peak load demand
D. To eliminate the need for overcurrent protection devices
02Which set of standards is commonly associated with electrical control systems?
A. ANSI, ISO, and IEEE
B. NEMA, IEC, and NEC✓
C. BS, DIN, and SAE
D. UL, CSA, and OSHA
03Which of the following is one of the ten basic rules of electrical safety?
A. Always work on energised circuits to minimise downtime
,B. De-energise circuits, use PPE, verify lockout/tagout, test before touch, and use insulated
tools✓
C. Use bare hands when voltage is below 50V
D. Avoid using PPE when working in dry conditions
04What is the correct lockout/tagout (LOTO) system order?
A. Apply LOTO device → shut down → notify → verify zero energy
B. Isolate energy → apply LOTO → notify → shut down → verify
C. Notify → shut down → isolate energy → apply LOTO device → release stored energy → verify
zero energy✓
D. Shut down → verify zero energy → notify → apply LOTO → isolate energy
05How does three-phase power achieve continuous and efficient power delivery?
A. By using a single AC voltage with an amplified waveform
B. By using two AC voltages 180° out of phase
C. By using three AC voltages 120° out of phase, providing continuous power with higher
efficiency✓
D. By converting DC power into three separate pulses
06What is the function of the neutral conductor in an electrical power system?
A. Serves as a return path for current in unbalanced systems and maintains voltage stability✓
B. Increases total system voltage for heavy loads
C. Acts as a primary safety disconnect for the circuit
D. Provides additional phase voltage to single-phase loads
07What is the correct procedure for using a digital multimeter?
A. Connect leads first, then set the function dial while measuring
, B. Set the function (volts, ohms, etc.), connect leads properly, and read the measurements✓
C. Always start on the highest current range to prevent damage
D. Use only the AC voltage setting for all measurements
08What is the key difference between grounded and ungrounded systems?
A. Grounded systems have higher voltage than ungrounded systems
B. Ungrounded systems detect faults faster than grounded systems
C. Grounded systems have one conductor connected to ground for safety; ungrounded systems
do not, which can delay fault detection✓
D. Both systems are identical in operation but differ only in installation cost
09How do overcurrent protection devices — fuses, breakers, and overloads — each protect a
circuit?
A. Fuses trip, breakers melt, and overloads reset automatically under any fault condition
B. Fuses melt under excess current; breakers trip; overloads respond to sustained heat or
current✓
C. All three function identically but are selected based on voltage class
D. Fuses and breakers melt; overloads use only magnetic action
10 How does a three-phase motor produce rotational motion?
A. By using a commutator to reverse DC current direction in the rotor
B. By pulsing a single-phase supply to create intermittent magnetic fields
C. By using rotating magnetic fields from three-phase power to turn the rotor✓
D. By converting AC power to DC inside the motor housing
11Which data items are typically found when interpreting a motor's nameplate?
A. Serial number, manufacturing date, and warranty period
