SACA C-202 Electric Motor
Control Systems ACTUAL EXAM
2025/2026 QUESTIONS WITH
VERIFIED CORRECT SOLUTIONS ||
100% GUARANTEED PASS
<BRAND NEW VERSION>
Pressure switch function and operation - ANSWER Opens/closes contacts
based on sensed fluid pressure.
Relay-based sequence control circuit troubleshooting - ANSWER
Understand logic flow and test relay operations.
On-delay timer circuit operation - ANSWER Timer delays output
activation after coil is energized.
Off-delay timer circuit operation - ANSWER Output stays energized for
a time after coil is de-energized.
One-shot timer relay circuit operation - ANSWER Provides a single
timed pulse when triggered.
No-load-at-start motor control circuit operation - ANSWER Uses a timer
to delay load engagement, reducing start current.
Repeat cycle timer circuit operation - ANSWER Alternates between ON
and OFF for set durations repeatedly.
Grounding - ANSWER To provide a low-resistance path for fault current,
ensuring safety and protecting equipment.
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.
What are the four components of a ladder diagram?
LAP.04 - ANSWER • Power Supply
• Conductors
• Input Devices
• Output Devices
What are the six basic rules that determine how a ladder diagram is
drawn?
LAP.04 - ANSWER • All Components Labeled
• All Conductors Numbered
• All Lines Numbered
• Control Devices Only
• Only One Load Per Line
• Output Devices Located on Right
Describe how to determine the operation of a circuit given a ladder
diagram.
LAP.04 - ANSWER Left to Right, Top to Bottom.
The best method for reading a ladder diagram is to start at the upper left
of the diagram at the first input on the first line, then work your way
across that line before moving down to the first input on the next line.
Explain how to wire switches to form an AND logic circuit and provide a
real-world application.
LAP.04 - ANSWER • An AND logic circuit can be made by placing two
or more Normally Open (N.O.) switches wired in series.
• Two-Hand Circuit
Explain how to wire switches to form an OR logic circuit and provide a
real-world application.
LAP.04 - ANSWER • An OR logic circuit can be formed by two or more
Normally Open (N.O.) switches wired in Parallel.
• Remote start switch for a machine.
Explain how to wire switches to form a NOT logic circuit and provide a
real-world application.
LAP.04 - ANSWER • NOT logic can be formed by the use of a single
Normally Closed (N.C.) switch.
• Stop Pushbutton
, Explain how to wire switches to form a NOR logic circuit and provide a
real-world application.
LAP.04 - ANSWER • NOR logic can be made of two or more Normally
Closed (N.C.) switches wired in series.
• E-Stop in a Wind Turbine
Explain how to wire switches to form a NAND logic circuit and provide
a real-world application.
LAP.04 - ANSWER • NAND logic can consist of two or more Normally
Closed (N.C.) input switches wired in Parallel.
• The Interior light circuit in a car.
Give the three applications of a Control Relay.
LAP.05 - ANSWER • Energizing Larger Output Devices
• Performing Control Logic
• Memory Logic
As an industry standard, how do you reverse direction on a 3Ø Motor? -
ANSWER Reverse Leg 1 & Leg 3
Explain the theory of operation of a control relay.
LAP.05 - ANSWER A control relay consists of a coil and movable
contacts which are attached to a spring-loaded armature.
When De-energized, the spring holds the N.C. Contacts of the relay
closed and the N.O. Contacts open.
When energized, the coil attracts the armature, which contains the
movable contacts, causing the N.O. Contacts to close and the N.C.
Contacts to open.
Control Relays are primarily available in which two types?
LAP.05 - ANSWER • General Purpose Relays
• Machine Control Relays
Give me two reasons why we use Relays and Seal-In Circuits instead of
switches.
LAP.05 - ANSWER • Avoid using unnecessary switches.
• A manual switch must by physically turned off, while a Relay can be
turned off automatically using a sensor or limit switch.
What's the mode fundamental application of the Seal-In Circuit?
LAP.05 - ANSWER Basic motor Start/Stop control
, What's the point in using Magnetic Motor Starters?
LAP.05 - ANSWER • Functions as a large relay to start and stop a motor
by opening and closing the power lines feeding to the motor.
• It provides memory logic (Seal-In Circuit) through a set of auxiliary
relay contacts.
• It includes overload protection.
Name the 3 components of a typical Magnetic Motor Starter.
LAP.05 - ANSWER • Overload Relay
• Auxiliary Contact (N.O.)
• Interlock Contact (N.C.)
What is meant by setting the Trip Current?
Where can one find it?
LAP.05 - ANSWER • The rated Full-Load Current (FLA).
• The FLA is usually listed on the nameplate of the motor or in the motor
specifications.
Mutual Inductance
LAP.03 - ANSWER When two electrical coils are placed near each other,
alternating current flowing in one coil will induce an AC voltage in the
other coil.
Five Functions of Motor Control
LAP.02 - ANSWER •Start/Stop Control
•Motor and Circuit Protection
•Speed Control
•Jogging
•Reversing
What's the purpose in setting TRIP CURRENT? - ANSWER To
disconnect the motor before damage occurs.
Three Most Common Types of Overloads
LAP.02 - ANSWER •Thermal Overload
•Magnetic Overload
•Solid-State Overload
Explain the Power/Voltage/Current relationship in a Transformer
LAP.03 - ANSWER The power relationship of a transformer says that the
power in is approximately equal to power out. Therefore, if the output
voltage is lower than the input voltage, the output current should be
higher than the input current to satisfy the power relationship.
Control Systems ACTUAL EXAM
2025/2026 QUESTIONS WITH
VERIFIED CORRECT SOLUTIONS ||
100% GUARANTEED PASS
<BRAND NEW VERSION>
Pressure switch function and operation - ANSWER Opens/closes contacts
based on sensed fluid pressure.
Relay-based sequence control circuit troubleshooting - ANSWER
Understand logic flow and test relay operations.
On-delay timer circuit operation - ANSWER Timer delays output
activation after coil is energized.
Off-delay timer circuit operation - ANSWER Output stays energized for
a time after coil is de-energized.
One-shot timer relay circuit operation - ANSWER Provides a single
timed pulse when triggered.
No-load-at-start motor control circuit operation - ANSWER Uses a timer
to delay load engagement, reducing start current.
Repeat cycle timer circuit operation - ANSWER Alternates between ON
and OFF for set durations repeatedly.
Grounding - ANSWER To provide a low-resistance path for fault current,
ensuring safety and protecting equipment.
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.
What are the four components of a ladder diagram?
LAP.04 - ANSWER • Power Supply
• Conductors
• Input Devices
• Output Devices
What are the six basic rules that determine how a ladder diagram is
drawn?
LAP.04 - ANSWER • All Components Labeled
• All Conductors Numbered
• All Lines Numbered
• Control Devices Only
• Only One Load Per Line
• Output Devices Located on Right
Describe how to determine the operation of a circuit given a ladder
diagram.
LAP.04 - ANSWER Left to Right, Top to Bottom.
The best method for reading a ladder diagram is to start at the upper left
of the diagram at the first input on the first line, then work your way
across that line before moving down to the first input on the next line.
Explain how to wire switches to form an AND logic circuit and provide a
real-world application.
LAP.04 - ANSWER • An AND logic circuit can be made by placing two
or more Normally Open (N.O.) switches wired in series.
• Two-Hand Circuit
Explain how to wire switches to form an OR logic circuit and provide a
real-world application.
LAP.04 - ANSWER • An OR logic circuit can be formed by two or more
Normally Open (N.O.) switches wired in Parallel.
• Remote start switch for a machine.
Explain how to wire switches to form a NOT logic circuit and provide a
real-world application.
LAP.04 - ANSWER • NOT logic can be formed by the use of a single
Normally Closed (N.C.) switch.
• Stop Pushbutton
, Explain how to wire switches to form a NOR logic circuit and provide a
real-world application.
LAP.04 - ANSWER • NOR logic can be made of two or more Normally
Closed (N.C.) switches wired in series.
• E-Stop in a Wind Turbine
Explain how to wire switches to form a NAND logic circuit and provide
a real-world application.
LAP.04 - ANSWER • NAND logic can consist of two or more Normally
Closed (N.C.) input switches wired in Parallel.
• The Interior light circuit in a car.
Give the three applications of a Control Relay.
LAP.05 - ANSWER • Energizing Larger Output Devices
• Performing Control Logic
• Memory Logic
As an industry standard, how do you reverse direction on a 3Ø Motor? -
ANSWER Reverse Leg 1 & Leg 3
Explain the theory of operation of a control relay.
LAP.05 - ANSWER A control relay consists of a coil and movable
contacts which are attached to a spring-loaded armature.
When De-energized, the spring holds the N.C. Contacts of the relay
closed and the N.O. Contacts open.
When energized, the coil attracts the armature, which contains the
movable contacts, causing the N.O. Contacts to close and the N.C.
Contacts to open.
Control Relays are primarily available in which two types?
LAP.05 - ANSWER • General Purpose Relays
• Machine Control Relays
Give me two reasons why we use Relays and Seal-In Circuits instead of
switches.
LAP.05 - ANSWER • Avoid using unnecessary switches.
• A manual switch must by physically turned off, while a Relay can be
turned off automatically using a sensor or limit switch.
What's the mode fundamental application of the Seal-In Circuit?
LAP.05 - ANSWER Basic motor Start/Stop control
, What's the point in using Magnetic Motor Starters?
LAP.05 - ANSWER • Functions as a large relay to start and stop a motor
by opening and closing the power lines feeding to the motor.
• It provides memory logic (Seal-In Circuit) through a set of auxiliary
relay contacts.
• It includes overload protection.
Name the 3 components of a typical Magnetic Motor Starter.
LAP.05 - ANSWER • Overload Relay
• Auxiliary Contact (N.O.)
• Interlock Contact (N.C.)
What is meant by setting the Trip Current?
Where can one find it?
LAP.05 - ANSWER • The rated Full-Load Current (FLA).
• The FLA is usually listed on the nameplate of the motor or in the motor
specifications.
Mutual Inductance
LAP.03 - ANSWER When two electrical coils are placed near each other,
alternating current flowing in one coil will induce an AC voltage in the
other coil.
Five Functions of Motor Control
LAP.02 - ANSWER •Start/Stop Control
•Motor and Circuit Protection
•Speed Control
•Jogging
•Reversing
What's the purpose in setting TRIP CURRENT? - ANSWER To
disconnect the motor before damage occurs.
Three Most Common Types of Overloads
LAP.02 - ANSWER •Thermal Overload
•Magnetic Overload
•Solid-State Overload
Explain the Power/Voltage/Current relationship in a Transformer
LAP.03 - ANSWER The power relationship of a transformer says that the
power in is approximately equal to power out. Therefore, if the output
voltage is lower than the input voltage, the output current should be
higher than the input current to satisfy the power relationship.
