Discrete Control & PLC's

What type of control systems operate on parameters and variables that change at discrete moments in time?

• Continuous Process Control

• Discrete Process Control

• Analog Process Control

• Hybrid Process Control

What is the binary state of a motor in discrete process control?

• Open/closed

• Engaged/not engaged

• On/off

• Contact/no contact

What do both types of discrete control respond to?

• Changes in events or time

• Changes in color

• Changes in speed

• Changes in temperature

What is the main concern of sequencing?

• Event-driven changes

• Time-driven changes

• Speed-driven changes

• Temperature-driven changes

What is NOT a feature of logic control systems?

• Memory

• Time-dependent characteristics

• Input-based output

• Random operation

Logic control systems do not have which of the following?

• Input values

• Memory

• Output

• Switching capability

Which logic gate is used to perform logical negation?

• AND

• OR

• NOT

• NAND

Which component is used to illustrate the output in the circuits?

• Resistor

• Capacitor

• Light bulb

• Motor

In an OR gate, what is the output when one input is 1 and the other is 0?

• 0

• 1

• 2

• Undefined

What is the output of an OR gate when both inputs are 1?

• 0

• 1

• 2

• Undefined