📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

    Question

    Which statement is FALSE for analog input module for

    PLCs? 
    A The resolution of an analog input is higher, indicates less accuracy. Correct Answer Incorrect Answer
    B A Single channel module can measure one analog signal at a time. Correct Answer Incorrect Answer
    C Temperature, Pressure are example of analog input signals for PLC. Correct Answer Incorrect Answer
    D Analog input module converts analog signal to digital from sensors. Correct Answer Incorrect Answer

    Solution

    The false statement is (a). In fact, higher resolution means greater accuracy , because the analog signal is divided into more digital steps, reducing quantization error. Saying that higher resolution indicates less accuracy is incorrect. ●      A single channel module indeed measures only one analog signal at a time (true).
    ●      Temperature and pressure are typical analog inputs for PLCs (true).
    ●      Analog input module’s role is to convert analog signals from sensors into digital form (true). Hence, the false statement is: “The resolution of an analog input is higher, indicates less accuracy.”

    Practice Next
    More IT Operating System Questions

    Relevant for Exams:

    ask-question