PLC FINAL EXAM 2024-2025 |COMPLETE QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS ) ALREADY GRADED A+.
? is/are an eye and face protection device that covers the entire face
with a plastic shield and is used for protection from flying objects. -
ANSWER-A face shield
A(n) ? is a dual-voltage unit used to set the power rating of a PLC. -
ANSWER-jumper link
? grounding is the connection of machinery electrical systems to
earth ground to reduce the chance of electrical shock by grounding
all non-current-carrying exposed metal. - ANSWER-Equipment
What is the third step in the OSHA lockout/tagout procedure? -
ANSWER-Isolate machinery or equipment.
lesson1 q 23 - ANSWER-visual
Which safety label description indicates an imminently hazardous
situation, that, if not avoided, will result in death or serious injury? -
ANSWER-Danger
The number and type of I/Os cannot be changed in a fixed PLC. -
ANSWER-true
, CPUs are rated according to the size of the program memory and
scan time. - ANSWER-true
EEPROM is used in PLCs to provide power failure backup for the RAM
memory. - ANSWER-true
Pushbuttons, selector switches, limit switches, and proximity
switches are common input devices. - ANSWER-true
A byte is a group of four bits. - ANSWER-false
The CPU is the section of the PLC that houses the processor (brain)
of the PLC. - ANSWER-true
All timer instructions consist of four words. - ANSWER-false
RES instructions are used with TOF instructions. - ANSWER-false
A reset instruction is required to reset an RTO instruction. –
ANSWER-true
For individual conductors, the color blue is used to identify AC wiring
and the color red is used for DC wiring. - ANSWER-false
Emergency stop buttons must be wired directly to a PLC. – ANSWER-
false
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