A multiplexing sequence may be repeated as frequently as
a. Once per hour
b. Twice per minute
c. Twice per second
d. Four times or more per second
e. Fifty times per second
Answer: D
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Power Engineering Chapter 89
- The common standard control modes for a plant control system are
- A typical use of a mainframe computer system in a process would be
- A computer normally displays information to the operator via
- The main function of a mainframe computer system is to:
- The type of circuit used to store (write) and retrieve (read) information from a computer is known as its:
- Run time totals, recorded by a computer, are commonly used:
- Digital output signals are processed by _____ before an analog controls can react to them.
- A device used to convert audio tones to computer language is a:
- Data cannot be permanently stored on a
- An analog control loop output must be put through a _____ before the computer can react to the signal.
- Transmitters that transmit digital codes directly to a computer are known as:
- A process computer connected to digital inputs is protected from harmful voltages by means of:
- Soft keying is:
- Sharing and transferring information between computers is termed:
- Which of the following would be the best choice for a powerhouse control-room installation?
- Inputs for logic and supervisory computer functions are mainly:
- The main component of any computer is the:
- When personal computers are linked together and information flows between them, it is called:
- Which of the following is a programming language?