Question 1

An OR gate operates on the same principle as.&#10;A)a series circuit.&#10;B)a parallel circuit.&#10;C)a series-parallel circuit.&#10;D)None of these choices are correct

Accepted Answer

An OR gate operates on a parallel circuit principle where a signal can pass through either of the inputs to activate the output.

Question 2

The logic symbol drawn is that of the:&#10; &#10;A)NOT function.&#10;B)NOR function.&#10;C)NAND function.&#10;D)OR function.

Accepted Answer

NOT function.

Question 3

The logic function(s) used by PLC is (are):&#10;A)AND&#10;B)OR&#10;C)NOT&#10;D)All of these choices are correct

Accepted Answer

PLCs can use all of the logic functions (AND, OR, NOT) to control processes and machines.

Question 4

A gate is a device that:&#10;A)allows current flow in one direction only.&#10;B)changes alternating current to direct current.&#10;C)performs a logical decision based on its inputs.&#10;D)performs a logical decision based on its outputs.

Accepted Answer

A gate is a digital circuit that performs a logical decision based on its inputs. It takes one or two binary inputs and produces a single binary output, depending on the type of gate. Gates are used to build digital circuits, such as adders, flip-flops, and registers, which form the basis for modern computers and other digital devices. Therefore, option C is the correct answer. Options A and B are not correct because gates do not have anything to do with current flow or the conversion of AC to DC. Option D is incorrect because gates perform logical decisions based on their inputs, not their outputs.

Question 5

The logic symbol drawn is that of the:&#10; &#10;A)AND function.&#10;B)OR function.&#10;C)NOR function.&#10;D)NAND function.

Accepted Answer

The logic symbol is a combination of an AND gate and a NOT gate, which gives the function of a NAND gate. The output is 0 only when both inputs are 1.

Question 6

The OR function, implemented using contacts, requires contacts connected in:&#10;A)series.&#10;B)parallel.&#10;C)series/parallel.&#10;D)parallel/series.

Accepted Answer

The OR function requires at least one of the contacts to be closed for the output to be ON. Connecting the contacts in parallel ensures that if any of the contacts are closed, the overall circuit will be closed and the output will be ON.

Question 7

The logic symbol drawn is that of the:&#10; &#10;A)AND function.&#10;B)OR function.&#10;C)NOT function.&#10;D)NOR function.

Accepted Answer

The logic symbol drawn is the universal symbol for an AND gate which represents the logical operation of AND. The AND function returns true only when all the inputs are true, otherwise it returns false.

Question 8

The Boolean equation for the logic symbol is:&#10; &#10;A)Y= A + B&#10;B)Y= AB&#10;C)Y= A &#8226; B&#10;D)either Y= AB or Y= A&#8226;.B

Accepted Answer

The answer of The Boolean equation for the logic symbol...

Question 9

An inverter is a digital circuit which takes a digtal input and produces an output which is the opposite state of the input.

Accepted Answer

This is correct definition of an inverter gate.

Question 10

The basic rule for an  XOR  function is:&#10;A)if one or the other, but not both, inputs are 1, the output is 1.&#10;B)if one or more inputs are 1, the output is 1.&#10;C)if one or more inputs are 1, the output is 0.&#10;D)if one or more inputs are 0, the output is 1.

Accepted Answer

The basic rule for an XOR function is that if one or the other, but not both, inputs are 1, the output is 1. This means that only when one input is 1 and the other input is 0, the output will be 1. In all other cases (both inputs are 1, both inputs are 0, or one input is 0 and the other is 1), the output will be 0.

Question 11

The basic rule for an OR gate is:&#10;A)if one or more inputs are 1, the output is 1.&#10;B)if one or more inputs are 1, the output is 0.&#10;C)if one or more inputs are 0, the output is 1.&#10;D)if one or more inputs are 1, output is 0 and if one or more inputs are 0, the output is 1.

Accepted Answer

The answer of The basic rule for an OR gate...

Question 12

The Boolean equation for the logic symbol is:&#10; &#10;A)Y = A + B + C&#10;B)Y = ABC&#10;C)Y = (AB) + C&#10;D)Y = (A - B) C

Accepted Answer

The answer of The Boolean equation for the logic symbol...

Question 13

Logic gates are grouped in combination to allow for more complex decision-making processes.

Accepted Answer

The answer of Logic gates are grouped in combination to...

Question 14

With reference to the logic circuit, the output  Y  will be at a logic 1 when&#10; &#10;A)inputs A and B are logic 1.&#10;B)input A or B is logic 1.&#10;C)input A is at logic 1 and input B is at logic 0.&#10;D)input A is at logic 0 and input B is at logic 1.

Accepted Answer

The answer of With reference to the logic circuit, the...

Question 15

A truth table shows each possible input to the gate along with its resultant output.

Accepted Answer

The answer of A truth table shows each possible input...

Question 16

The truth table for the logic symbol is.&#10; &#10;A)(a)&#10;B)(b)&#10;C)(c)&#10;D)(d)

Accepted Answer

The answer of The truth table for the logic symbol...

Deck 4: Fundamentals of Logic Difficulty: Easy Gradable: Automatic