Which one of the following statements about number systems is NOT true?
A) The hexadecimal system uses the base 16 with numbers 0 through 9 and the letters A, through F.
B) The binary system uses just two digits to represent the value of every number.
C) The octal system uses digits 0 to 8.
D) All number systems have a radix with position and weight values.
Question 2
Which of the following statements is not correct or not in the correct order for the troubleshooting sequence?
A) Put the brackets on the PLC system block diagram in order to narrow the search for the fault.
B) Start with a precise test of PLC system parameters to locate the faulty component.
C) After the faulty unit or component is identified, the problem is corrected by adjustment or replacement of the unit or component.
D) Gather all of the symptom data for the PLC system failure.