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TPC-PLC's Test | Questions and Answers Verified 100% Correct
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TPC-PLC's Test | Questions and Answers Verified 100% Correct
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TPC-PLC's Test | Questions and AnswersVerified 100% Correct
Which of the following PLC elements give the system flexibility? - ✔✔Program
The three main components of a PLC are the programming device, processor unit, and -
✔✔I/O section
In ladder logic programming, a __________ symbol is used for input instructions, and a
__________ symbol is used for output instructions. - ✔✔contact; coil
Ladder logic differs from most other computer languages in that it is - ✔✔drawn graphically
Which device creates a numerically coded binary signal to represent an output condition? -
✔✔Encoder
Which of the following is the most common cause of a program problem? - ✔✔Changes
made to the original program
If you place controller documentation on top of the control cabinet, you can - ✔✔cause the
electronics to overheat
After a program has been intergrated and the hardware debugged the next step in system
development is to - ✔✔Keep a log of any problems
When sizing a Progammable controller system you must consider I/O , Memory, and -
✔✔Scan time
, According to the stack rule what happens each time a load instruction is used - ✔✔the logic
is pushed down one level
When a ladder logic program is written as part of a larger program a ___________ is used to tell
it when to start its sequence. - ✔✔Handshaking signal
The logical descissons of a programmable controller are made in the - ✔✔Processor
In ladder logic, the output instruction that looks like a coil is called - ✔✔output energize
The binary system is based on the number ___________ . the hexidecimal system commonly
used with PLC's is based on the number __________. - ✔✔2; 16
Which of the following is a recommended test strategy for troubleshooting - ✔✔Start at the
switch and test each connection until you reach the controller
Which of the following photoelectric sensors makes use of a reflector placed opposite the
device. - ✔✔Retroreflective
In most PLC applications each push button contact is wired to a - ✔✔Input terminal on an
imput module
Moving numbers from one register to another involves the use of a ___________ instruction -
✔✔Data-handling
The function of a float switch is to indicate - ✔✔liquid level
Which of the following would an operator use as an input/output device via a keypad or touch
screen? - ✔✔HMI
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