Quiz 2 PLC
A Or gate operates on the same principle as -A series circuit. -A parallel circuit. -A seriesparallel circuit. -None of these.
A parallel circuit
An AND gate operates on the same principle as: -A series circuit. -None of these. -A parallel circuit. -A seriesparallel circuit.
A series
If you want to know when matching bits in two different words are both ON, you would use the _____ logic instruction. -AND -XOR -OR -NOT
AND
The ____ gate output is 1 only if all inputs are 1
AND
The NOT function can be thought of as -FALSEtoTRUE converter. -A changer of states. -An inverter. -All of these.
All of these
A NOR gate is: -An AND gate with an inverter connected to the output. -An Or gate with an inverter connected to the output. -Equivalent to a series circuit. -Equivalent to a parallel circuit.
An Or gate with an inverter connected to the output.
The mathematical study of the binary number system and logic is called _____ algebra
Boolean
True or False A gate can have one or more outputs but only one input
False
True or False A light that is "off" or a switch that is "open" would normally be represented by a binary 1
False
True or False A two input OR function, expressed as a Boolean equation, would be Y=AB.
False
True or False All gates are devices that have one input with which they preform logic decisions and produce a result at one or more of their outputs
False
True or False All gates are devices that have one input with which they preform logic decisions and produce a result at one or more of their outputs.
False
True or False All inputs to a NAND gate must be 1 to produce a 1 output.
False
True or False All inputs to a NOR gate must be 1 to produce a 1 output.
False
True or False The AND function, implemented using switches, will mean switches connected in parallel
False
True or False There is no difference between a relay schematic and a ladder logic program
False
The basic rule for an OR gate is -If one or more inputs are 1, the output is 1. -If one or more inputs are 1, output is 0. -If one or more inputs are 0, the output is 1. -Both B and C
If one or more inputs are 1, the output is 1.
The basic rule for XOR function is -If one or the other, but not both, inputs are 1, the ouput is 1. -If one or more inputs are 1, the output is 1. -If one or more inputs are 1, the ouput is 0. -If one or more inputs are 0, the output is 1
If one or the other, but not both, inputs are 1, the ouput is 1.
A single rung of a ladder logic program is arranged with: -Input conditions connected from left to right, with the output at the far right. -Input conditions connected from right to left, with the output at the far left -The output in the center and the input conditions to the left and right of it. -All input conditions in parallel and all output conditions in series.
Input conditions connected from left to right, with the output at the far right.
The NOT function is also called a(an) ____.
Inverter
If you want to reverse the state of bits in a word, you would use the _____ logic instruction. -OR -XOR -AND -NOT
NOT
If you want to know when one or both matching bits in two different words are ON, you would use the logic instruction -AND -XOR -OR -NOT
OR
The _____ gate output is 1 if one or more of its inputs are 1
OR
True or False A NAND gate is an AND gate with an inverter connected to the output.
True
True or False All inputs to an AND gate must be 1 to produce a 1 output
True
True or False Each programmed rung is a combination of input conditions connected from left to right with the symbol that represents the output at the far right
True
True or False Hardwired logic can be implemented using relays and relay schematics
True
True or False Hardwired logic is changeable only by altering the way devices are connected
True
True or False Hardwired logic is fixed and is changeable only by altering the way devices are connected.
True
True or False Hardwired logic refers to logic control functions determined by the way devices are interconnected
True
True or False Inverting the output of an Or gate will result in creating a NOR gate
True
True or False Ladder logic is a graphical representation of a user program
True
True or False Normally, a binary 1 represents the presence of a signal, while binary 0 represents the absence of a signal.
True
True or False One of the most common PLC programming languages is ladder logic
True
True or False Only one input to an OR gate must be 1 to produce a 1 output
True
True or False Programmable control is based on logic functions that are programmable and easily changed
True
True or False The basic rule for an XOR function is that if one or the other input is 1 but not both inputs are 1, the output is 1.
True
True or False With an AND gate, if any input is 0, the output will be 0.
True
Which of the following gates is commonly used for the comparison of two binary numbers? -NOT -XOR -NAND -NOR
XOR
In a two input XOR gate, when both inputs are 0, the ouput is ____.
Zero
In conventional logic circuits, binary 1 represents: -the occurrence of some event. -a high voltage level. -the presence of a signal. -all of these
all of these
The logic function(s) used by PI-C's is (are): -NOT -AND -all of these. -OR
all of these
The logic function(s) used by PIC's is (are): -OR -all or these -NOT -AND
all of these
The two binary states can be defined as -"high" or "low" -"on" or "off" -1" or "0" -all of these
all of these
A NOT function is used when a logic 1 must ____ some device -activate -deactivate -switch -light
deactive
The basic rule for an AND gate is -if all inputs are 1, the output will be 1. -if all inputs are 1, the output will be 0. -if all inputs are 0, the output will be 1. -both A and B.
if all inputs are 1, the output will be 1.
A light that is ON or a switch that is closed would normally be represented by a binary____.
one
In a NAND gate, when all inputs are 0, the output is ____.
one
In a NOR gate, when all inputs are 0, the output is ___.
one
In a two input OR gate, when one input is 0 and the other one is 1 the output is ___.
one
In a two input XOR gate, when one input is 0 and the other is 1 the output is ___.
one
A gate is a device that: -allows current flow in one direction only. -performs a logical decision based on its outputs. -performs a logical decision based on its inputs. -changes alternating current to direct current.
performs a logical decision based on its inputs
The ______ table shows the resulting output for each possible gate input conditions. -truth -input status -data -output status
truth
The binary concept used in logic refers to the fact that many things can be thought of as existing in one of ___ states.
two
The NOT output is 1 if the input is ____.
zero
