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

Question 1

An OR gate operates on the same principle as.

A)a series circuit.
B)a parallel circuit.
C)a series-parallel circuit.
D)None of these choices are correct

Answer 1

a parallel circuit.

Question 2

The logic symbol drawn is that of the:

A)NOT function.
B)NOR function.
C)NAND function.
D)OR function.

Answer 2

NOT function.

Question 3

The logic function(s) used by PLC is (are):

A)AND
B)OR
C)NOT
D)All of these choices are correct

Answer 3

All of these choices are correct

Question 4

A gate is a device that:

A)allows current flow in one direction only.
B)changes alternating current to direct current.
C)performs a logical decision based on its inputs.
D)performs a logical decision based on its outputs.

Question 5

The logic symbol drawn is that of the:

A)AND function.
B)OR function.
C)NOR function.
D)NAND function.

Question 6

The OR function, implemented using contacts, requires contacts connected in:

A)series.
B)parallel.
C)series/parallel.
D)parallel/series.

Question 7

The logic symbol drawn is that of the:

A)AND function.
B)OR function.
C)NOT function.
D)NOR function.

Question 8

The Boolean equation for the logic symbol is:

A)Y= A + B
B)Y= AB
C)Y= A • B
D)either Y= AB or Y= A•.B

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.

Question 10

The basic rule for an XOR function is:

A)if one or the other, but not both, inputs are 1, the output is 1.
B)if one or more inputs are 1, the output is 1.
C)if one or more inputs are 1, the output is 0.
D)if one or more inputs are 0, the output is 1.

Question 11

The basic rule for an OR gate is:

A)if one or more inputs are 1, the output is 1.
B)if one or more inputs are 1, the output is 0.
C)if one or more inputs are 0, the output is 1.
D)if one or more inputs are 1, output is 0 and if one or more inputs are 0, the output is 1.

Question 12

The Boolean equation for the logic symbol is:

A)Y = A + B + C
B)Y = ABC
C)Y = (AB) + C
D)Y = (A - B) C

Question 13

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

Question 14

With reference to the logic circuit, the output Y will be at a logic 1 when

A)inputs A and B are logic 1.
B)input A or B is logic 1.
C)input A is at logic 1 and input B is at logic 0.
D)input A is at logic 0 and input B is at logic 1.

Question 15

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

Question 16

The truth table for the logic symbol is.

A)(a)
B)(b)
C)(c)
D)(d)