PLC
PLC AGAIN
POWER SUPPLIES
DIGITAL
DIGITAL
100

What does PLC stand for?

Programmable logic controller

100

A break contact will allow logical continuity if shown a _____

"0"
100

Capacitor impede ____ frequency signals

LOW

100

This IC mounting style uses "gull wing" style pins that lay onto of PCB connection points.

SMT

100
This type of logics output is determined the current state of its inputs

COMBINATIONAL

200

The device that keeps circuit voltages within a PLC from interfering or back feeding onto other circuits

OPTOCOUPLER/OPTOISOLATOR

200

IF a PLC program uses sentences as instructions this type of program is known as __________

Textual

200

What is a draw back to using a full wave CT rectifier?

SIZE &/OR COST

200

When working on circuits that contain IC's from this logic family, it is important to use a grounding strap attached to your wrist.  

CMOS

200

This combinational logic device has one input and many outputs

DEMULTIPLEXER

300

This type of PLC system can have components added to it at will.

Modular

300

This type of memory is lost in power outage scenarios

Volatile

300

This type of rectification can be used on both Wye and delta electrical systems

3 phase Bridge

300

A IC with pins on all sides

 ARRAY

300

This sequential device uses only one input signal along with a clock pulse to control its output

D latch

400

This type of PLC input/output module will have current flowing into the module and out of the input/output device

Sinking

400

This type of memory can have individual bits erased from it and can be rewritten

EEPROM

400

Power zener circuits have one draw back. what is it?

Inefficient due to resistor in series with collector.

400

How many Nibbles are in the number 1001 0011 00112?

3

400

This device will be driven into an invalid state if both inputs are high

SR latch

500

What does OTE stand for in terms of PLC outputs

Output enabled

500

Which type of non volatile memory can only be programmed once?

PROM (burning)

500

Other than a Zener diode what is the other device discussed that can regulate voltage?

OP-AMP

500

This logic gate has a high output when BOTH A and B are low

NOR

500

If the enable pin on a gated SR latch is low and its inputs change, what is the effect on its output?

no change/ LATCH

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