Multiple Choice Questions on Programmable Logic Controllers (PLC).
PLC MCQ
- PLC means _________ Logic Controller.
A]Programmable b]Peripheral c]Periodic
- HMI means ________ Machine Interface
A]Human b]Hard c]Heart
- Unitary PLC has 20 inputs and ___outputs.
A]20 b]12 c]10
- PLCs having less than ______ inputs and outputs are called as Small PLC
A]50 b]200 c]100
- Small PLCs have a memory from ___________ to store the user’s logic programs.
A] 2KB to 10KB b] 10KB to 20KB c] 20KB to 30KB
- Medium PLC have ____________ inputs and outputs.
A]4000 to 8000 b] 1000to 4000 c] 100 to 200
- To protect a PLC from any incoming surges from the field , isolated devices such as _________are used.
A]Barrier b]ADC c]Transducer
- ________ language can be programmed interactively with the PLC
A]online b]offline c]Basic
- ________ language can be generated separately and then downloaded separately in the PC.
A]online b]offline c]Basic
- The__________ instruction is used to turn an output on or off after its timer has been on for a preset time interval.
A] Retentive Time b]timer on delay c]Timer off delay