Question:medium

A Programmable Logic Controller (PLC) is best suited for

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Logic Tip: If a machine is doing a repetitive, step-by-step mechanical dance (like a robot arm welding a car frame, or an elevator opening and closing doors), a PLC is almost certainly the brain controlling it.
  • Continuous process control
  • Batch reaction kinetics
  • Discrete and sequential control operations
  • Heat exchanger design
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The Correct Option is C

Solution and Explanation

Step 1: Understanding the Concept:
A PLC is a ruggedized industrial computer used for the automation of typically industrial electromechanical processes.
Step 2: Key Formula or Approach:
PLCs were originally designed to replace hard-wired relay logic in factories. They excel at "On/Off" logic.
Step 3: Detailed Explanation:
While modern PLCs can handle some continuous control, they are natively designed for discrete and sequential tasks. Examples include:
Starting and stopping motors based on a timer.
Controlling a conveyor belt that moves only when a sensor detects a box.
Opening a valve after a specific safety condition is met.
These are binary (yes/no) logic operations performed in a specific sequence.
Step 4: Final Answer:
A PLC is best suited for discrete and sequential control operations.
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