UEENEEI150A
Authored by Ed Kuschel
Instructional Technology
University
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39 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The main advantage of a PLC over a conventional relay circuit is:
More relay contacts are available
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
An example of a electronic control input sensor is:
Limit Switch
Indicator Lamp
Float Switch
Proximity Switch
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The supply for devices connected to the outputs of a programmable controller
comes from within the PLC
is always DC
comes from an external source
is always AC
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The supply for devices connected to the inputs of a programmable controller
comes from within the PLC and is always DC
comes from within the PLC and is always AC
comes from an external source and is always DC
comes from an external source and is always AC
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If four inputs are logic 1 at the same time for the Hitachi EH-A-14DR the current drawn from the power supply would be:
7.5 mA
15 mA
30 mA
350 mA
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This symbol in a ladder diagram represents:
capacitor
normal contact
non polarised capacitor
inverted contact
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a PLC's CPU?
To execute control instructions contained in the program memory
To supply power to the input and output devices
To convert AC power supply to DC power supply
To provide a physical interface for programming the PLC
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