South Carolina Automated Storage
Systems Technician Certification License
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. A warehouse uses an automated storage and retrieval system (AS/RS)
with a fixed-aisle shuttle. The primary purpose of the shuttle within an
AS/RS environment is to:
A. Balance electrical loads across drives
B. Transport loads horizontally and vertically within the pick aisle
C. Provide backup power to PLC systems
D. Act as a safety interlock during maintenance
Rationale: The shuttle’s core function is to move loads both
horizontally and vertically within an aisle to retrieve and deposit
inventory._
2. In PLC ladder logic, a seal-in circuit is typically used to:
A. Delay a start signal indefinitely
B. Reduce magnetic flux in solenoids
C. Maintain a motor starter coil energized after the initiating
pushbutton is released
D. Automatically reset all input conditions
, Rationale: A seal-in keeps the motor starter or output energized after
the start pushbutton opens, based on internal logic._
3. Which safety device is critical in an automated storage system to
immediately stop motion when an unauthorized person enters a
restricted area?
A. Penetration resistor
B. Current limiter
C. Light curtain
D. Thermal overload relay
Rationale: Light curtains detect intrusion into hazardous zones and
instantly halt motion to protect personnel._
4. A programmable logic controller (PLC) uses a scan cycle. What is the
correct order of operations?
A. Execute outputs → read inputs → solve logic
B. Solve logic → read inputs → execute outputs
C. Read inputs → solve logic → update outputs
D. Update outputs → solve logic → read inputs
Rationale: During the scan, the PLC first reads inputs, processes the
program, then updates outputs accordingly._
5. In automated storage systems, SKU velocity is used primarily to
determine:
A. Battery life of automated guided vehicles
B. Slotting priority for inventory placement
C. Voltage requirements for motor drives
D. Wire gauge for safety circuits
Rationale: SKU velocity identifies how often an item is picked, which
influences slotting and storage location optimization._
6. Which type of motor is most commonly used in high-precision
positioning applications within automated storage systems?
, A. Induction motor
B. Servo motor
C. Brushed DC motor
D. Shaded-pole motor
Rationale: Servo motors offer precise speed and position control,
making them suitable for automated positioning tasks._
7. In AS/RS conveyor systems, a sensor that detects the presence of a
pallet is called a:
A. Thermistor
B. Photoelectric sensor
C. Hall-effect sensor
D. Rheostat
Rationale: Photoelectric sensors detect the presence or absence of
objects using light interruption or reflection._
8. The term “cycle time” in an automated storage system refers to:
A. Time between scheduled maintenance
B. Total time to complete one pick and place operation
C. Time required to heat a drive motor
D. Time to recharge backup UPS systems
Rationale: Cycle time measures how long it takes to perform a
complete automated operation from start to finish._
9. A VFD (Variable Frequency Drive) primarily controls:
A. Hydraulic pressure
B. Battery temperature
C. Motor speed
D. Conveyor belt tension
Rationale: VFDs vary the frequency of electrical power to control the
rotational speed of AC motors._
Systems Technician Certification License
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. A warehouse uses an automated storage and retrieval system (AS/RS)
with a fixed-aisle shuttle. The primary purpose of the shuttle within an
AS/RS environment is to:
A. Balance electrical loads across drives
B. Transport loads horizontally and vertically within the pick aisle
C. Provide backup power to PLC systems
D. Act as a safety interlock during maintenance
Rationale: The shuttle’s core function is to move loads both
horizontally and vertically within an aisle to retrieve and deposit
inventory._
2. In PLC ladder logic, a seal-in circuit is typically used to:
A. Delay a start signal indefinitely
B. Reduce magnetic flux in solenoids
C. Maintain a motor starter coil energized after the initiating
pushbutton is released
D. Automatically reset all input conditions
, Rationale: A seal-in keeps the motor starter or output energized after
the start pushbutton opens, based on internal logic._
3. Which safety device is critical in an automated storage system to
immediately stop motion when an unauthorized person enters a
restricted area?
A. Penetration resistor
B. Current limiter
C. Light curtain
D. Thermal overload relay
Rationale: Light curtains detect intrusion into hazardous zones and
instantly halt motion to protect personnel._
4. A programmable logic controller (PLC) uses a scan cycle. What is the
correct order of operations?
A. Execute outputs → read inputs → solve logic
B. Solve logic → read inputs → execute outputs
C. Read inputs → solve logic → update outputs
D. Update outputs → solve logic → read inputs
Rationale: During the scan, the PLC first reads inputs, processes the
program, then updates outputs accordingly._
5. In automated storage systems, SKU velocity is used primarily to
determine:
A. Battery life of automated guided vehicles
B. Slotting priority for inventory placement
C. Voltage requirements for motor drives
D. Wire gauge for safety circuits
Rationale: SKU velocity identifies how often an item is picked, which
influences slotting and storage location optimization._
6. Which type of motor is most commonly used in high-precision
positioning applications within automated storage systems?
, A. Induction motor
B. Servo motor
C. Brushed DC motor
D. Shaded-pole motor
Rationale: Servo motors offer precise speed and position control,
making them suitable for automated positioning tasks._
7. In AS/RS conveyor systems, a sensor that detects the presence of a
pallet is called a:
A. Thermistor
B. Photoelectric sensor
C. Hall-effect sensor
D. Rheostat
Rationale: Photoelectric sensors detect the presence or absence of
objects using light interruption or reflection._
8. The term “cycle time” in an automated storage system refers to:
A. Time between scheduled maintenance
B. Total time to complete one pick and place operation
C. Time required to heat a drive motor
D. Time to recharge backup UPS systems
Rationale: Cycle time measures how long it takes to perform a
complete automated operation from start to finish._
9. A VFD (Variable Frequency Drive) primarily controls:
A. Hydraulic pressure
B. Battery temperature
C. Motor speed
D. Conveyor belt tension
Rationale: VFDs vary the frequency of electrical power to control the
rotational speed of AC motors._
