|
The central processing unit ___
|
|
0
|
216
|
July 26, 2022
|
|
The programming device ___
|
|
0
|
224
|
July 26, 2022
|
|
Unlike personal computers, PLCs are ___
|
|
0
|
317
|
July 26, 2022
|
|
At the start of the PLC scan the ___
|
|
0
|
297
|
July 26, 2022
|
|
When a field device contact connected to the input module closes ___
|
|
0
|
257
|
July 26, 2022
|
|
The symbol in a ladder logic diagram represents a ___
|
|
0
|
188
|
July 26, 2022
|
|
The symbol in a ladder logic diagram is ___
|
|
0
|
222
|
July 26, 2022
|
|
The programming device must be connected to the controller ___
|
|
0
|
1098
|
July 26, 2022
|
|
The control plan stored in the PLC is called ___
|
|
0
|
227
|
July 26, 2022
|
|
The power required to operate the logic circuits of the processor unit is typically ___
|
|
0
|
268
|
July 26, 2022
|
|
Field or real-world devices refer to ___
|
|
0
|
366
|
July 26, 2022
|
|
PLC proprietary architecture ___
|
|
0
|
168
|
July 26, 2022
|
|
The main difference between a PLC and relay control system is that ___
|
|
0
|
234
|
July 26, 2022
|
|
Which of the following is not an advantage that PLCs offer over the conventional ___
|
|
0
|
311
|
July 26, 2022
|
|
Modifying relay-type process control circuits usually involves changing the ___
|
|
0
|
514
|
July 26, 2022
|
|
Basically, the function of a PLC is to ___
|
|
0
|
200
|
July 26, 2022
|
|
PLCs were originally designed as replacements for ___
|
|
0
|
373
|
July 26, 2022
|
|
Digital modules are also called discrete modules
|
|
0
|
197
|
July 26, 2022
|
|
Discrete means that each input or output has two states: true (on) or false (off)
|
|
0
|
153
|
July 26, 2022
|
|
Most PLC electronic components are not sensitive to electrostatic discharge
|
|
0
|
209
|
July 26, 2022
|
|
A redundant PLC system is configured using two processors
|
|
0
|
260
|
July 25, 2022
|
|
A module inserted into the wrong slot could be damaged
|
|
0
|
171
|
July 25, 2022
|
|
I/O modules are normally installed or removed while the PLC is powered
|
|
0
|
293
|
July 25, 2022
|
|
A modular PLC that has room for several I/O modules, is capable of being customized for a particular application
|
|
0
|
224
|
July 25, 2022
|
|
Most PLC programming software will allow you to develop programs on another manufacturer's PLC
|
|
0
|
191
|
July 25, 2022
|
|
When a new program is loaded into a PLC’s memory, the old program that was ___
|
|
0
|
288
|
July 25, 2022
|
|
Information stored in a RAM memory location can be written into or read from
|
|
0
|
140
|
July 25, 2022
|
|
RAM memory is nonvolatile
|
|
0
|
142
|
July 25, 2022
|
|
A nonvolatile memory will retain its programmed contents if operating power is lost
|
|
0
|
150
|
July 25, 2022
|
|
A volatile memory will lose its programmed contents if operating power is lost
|
|
0
|
226
|
July 25, 2022
|