Programmable Logic Controller (PLC) MCQ Questions and Answers Quiz

11. For a 16-bit register, which is the largest integer number a PLC counter function can reach

  1. 32,768
  2. 65,535
  3. 65,536
  4. 32,767

12. To protect a PLC from any incoming surges from the field, an isolated device such as ____________ is used.

  1. Transformer
  2. Transducer
  3. ADC
  4. DAC

13. In PLC programming, a retentive function is one that

  1. Default points to the On State
  2. Default points to the Off State
  3. is not reset after a power cycle
  4. cannot be edited or deleted

14. An OR function implemented in Ladder logic uses

  1. normally closed contacts in series
  2. normally open contacts in series
  3. normally closed contacts in parallel
  4. normally open contacts in parallel

15. A good application for a timed interrupt in a PLC program would be

  1. A math function block
  2. A PID function block
  3. A communication function block
  4. A motor start/stop rung

16. The __________________ instruction is used to turn an output ON or OFF after its time has been on for a preset time interval

  1. retentive time
  2. timer and delay
  3. timer off delay
  4. none of these

MCQ Multiple Choice Questions and Answers on Programmable Logic Controller (PLC)

Programmable Logic Controller (PLC) Trivia Questions and Answers PDF

Programmable Logic Controller (PLC) Question and Answer

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