Explore topic-wise MCQs in Electronics.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.

1.

One of DeMorgan's theorems states that . Simply stated, this means that logically there is no difference between:

A. a NAND gate and an AND gate with a bubbled output
B. a NOR gate and an AND gate with a bubbled output
C. a NOR gate and a NAND gate with a bubbled output
D. a NAND gate and an OR gate with a bubbled output
Answer» C. a NOR gate and a NAND gate with a bubbled output
Discussion
2.

is the algebraic expression for the duality theorem.

A. True
B. False
Answer» C.
Discussion
3.

The Boolean expression for a three-input AND gate is Y = A • B + C.

A. True
B. False
Answer» C.
Discussion
4.

The double-inversion rule states that if a variable is inverted twice, then the variable will be back to its original state.

A. 1
B.
Answer» B.
Discussion
5.

The associative law of addition states that A + (B + C) = (A + B) + C.

A. 1
B.
Answer» B.
Discussion
6.

The sum-of-products form is a Boolean expression that describes the ANDing of two or more OR functions.

A. 1
B.
Answer» C.
Discussion
7.

One of DeMorgan's theorems states that . Simply stated, this means that logically there is no difference between:

A. a NAND gate and an AND gate with a bubbled output
B. a NOR gate and an AND gate with a bubbled output
C. a NOR gate and a NAND gate with a bubbled output
D. a NAND gate and an OR gate with a bubbled output
Answer» C. a NOR gate and a NAND gate with a bubbled output
Discussion
8.

is the algebraic expression for the duality theorem.

A. 1
B.
C. 1
D.
Answer» C. 1
Discussion
9.

A Karnaugh map will ____________________.

A. eliminate the need for tedious Boolean expressions
B. allow any circuit to be implemented with just AND and OR gates
C. produce the simplest sum-of-products expression
D. give an overall picture of how the signals flow through the logic circuit
Answer» D. give an overall picture of how the signals flow through the logic circuit
Discussion
10.

The Boolean expression for a three-input AND gate is Y = A • B + C.

A. 1
B.
Answer» C.
Discussion
11.

The application of Boolean algebra to the solution of digital logic circuits was first explored by ________ of ________.

A. Claude Shannon, MIT
B. George Boole, MIT
C. George Boole, Stanford
D. Claude Shannon, IBM
Answer» B. George Boole, MIT
Discussion
12.

One reason for using the sum-of-products form is that it can be implemented using all ______ gates without much alteration.

A. AND
B. NAND
C. OR
D. NOR
Answer» C. OR
Discussion
13.

According to the commutative law, in ORing and ANDing of two variables, the order in which the variables are ORed or ANDed makes no difference.

A. 1
B.
Answer» B.
Discussion
14.

Each "1" entry in a K-map square represents ______________.

A. a HIGH output on the truth table for all input combinations
B. a LOW output for all possible HIGH input conditions
C. a DON'T CARE condition for all possible input truth table combinations
D. a HIGH for each input truth table condition that produces a HIGH output
Answer» E.
Discussion
15.

Subtraction is commutative.

A. 1
B.
C. 1
D.
Answer» C. 1
Discussion
16.

The observation that a bubbled input OR gate is interchangeable with a bubbled output AND gate is referred to as:

A. a Karnaugh map
B. DeMorgan's second theorem
C. the commutative law of addition
D. the associative law of multiplication
Answer» C. the commutative law of addition
Discussion