Automation

Question 1

Parts of plc

Answer 1

Rack
CPU
Input (programmable terminal )
Output
Power supply

Question 2

What’s an interposing relay for

Answer 2

When’s Amps of load exceed the rating of output

Question 3

What eliminates voltage spikes

Answer 3

MOV metal oxide varistor

Question 4

When adding extra start/stop buttons how are they wired in?

Answer 4

Starts in parallel
Stops in series

Question 5

All logic functions happen through ?

Answer 5

CPU

Question 6

Another way to describe plc

Answer 6

Industrial computer

Question 7

Another word for programming terminal

Answer 7

Loading terminal

Question 8

TTL operates on how many volts ?

Answer 8

5 volts

Question 9

What’s does discrete mean?

Answer 9

On or off … digital is discrete

Question 10

Zero speed switch/holding contact is used for ?

Answer 10

Proving

Question 11

2 wire system is auto or manual?

Answer 11

Manual

Question 12

3 wire system is auto or manual?

Answer 12

Auto

Question 13

Sync is ?

Answer 13

Holding contact so cct doesn’t run drift

Question 14

Tracking is ?

Answer 14

Memory cct

Question 15

Explain low voltage release

Answer 15

Automatically comes back on

Question 16

Explain low voltage protection

Answer 16

Won’t come back on automatically needs an operator to press start

Question 17

What type of isolation is used to electrically separate outside voltages from internal cct of plc

Answer 17

Optical

Question 18

What part of the plc is the brains ?

Answer 18

CPU

Question 19

If an output module controls dc voltage what solid state is used to connect the load to line?

Answer 19

Power phototransistor

Question 20

If an output module controls controls ac voltage what solid state device is used to connect line to load?

Answer 20

Triad or phototriac

Question 21

The power supply to operate loads such as starter coils ,indicating light or solenoid valves must be provided by ?

Answer 21

External source

Question 22

HTL operates on how many volts ?

Answer 22

15