QUIZ DIGITAL ELECTRONICS

UNIT-2

Q1: WHICH OF THE FOLLOWING IS NOT THE BASIC LOGIC GATE.

A. NOTB. WITH

THE CORRECT ANSWER IS B(WITH)

Q2: HOW MANY INPUTS DOES “NOT” GATE HAVE?

A. ONEB. TWO

THE CORRECT ANSWER IS A(ONE)

Q3: WHICH GATE IS USED AS COMPLEMENT?

A. ANDB. NOT

THE CORRECT ANSWER IS B(NOT)

Q3: The Boolean expression for a 3-input AND gate is ________

A. Q=A+B+CB. Q=ABC

THE CORRECT ANSWER IS B(Q=ABC)

Q4: WHICH GATE REPRESENTS ADDITION OPERATION?

A. ORB. NOR

THE CORRECT ANSWER IS A(OR)

Q5:BOOLEAN EXPRESSION OF NOR GATE IS:

A. A+BB. AB

THE CORRECT ANSWER IS : A (A+B)

The Boolean expression for a 3-input OR gate is ________

A. Q=ABCB. Q=A+B+C

THE CORRECT ANSWER IS : B (Q=A+B+C)

Q6: The logic value of EX-NOR gate is one when:

A. All the inputs are same.B. All the inputs are different.

THE CORRECT ANSWER IS A(All the inputs are same)

Q7: THE EX-NOR GATE IS COMPLEMENT OF WHICH GATE:

A. OR GATE.B. EX-OR GATE.

THE CORRECT ANSWER IS B(EX-OR)

Q8: WHICH GATE IS DERIVED BY COMPLEMENTING NOR GATE?

A. EX-OR GATE.B. OR GATE.

THE CORRECT ANSWER IS B(OR Gate)

Q9: WHICH OF THE FOLLOWING IS A UNIVERSAL GATE?

A. NANDB. OR

THE CORRECT ANSWER IS A(NAND Gate)

Q10:How many universal gates are there?

A. 2B. 7

THE CORRECT ANSWER IS A(2: NOR Gate and

NAND Gate)

Q11: WHICH GATE COMPLEMENTS THE OPERATION OF AND GATE?

A. ORB. NAND

THE CORRECT ANSWER IS B(NAND Gate)

Q12: WHICH ARE UNIVERSAL GATES?

A. THOSE WHICH CAN BE DERIVED FROM ALL OTHER GATES

B. THOSE WHICH CAN DERIVED ALL OTHER GATES

THE CORRECT ANSWER IS B

Q: BOOLEAN EXPRESSION OF EX-OR GATE IS:A. A B + ABB. A B + A B

Correct answer is B(A B + A B )

Q: BOOLEAN EXPRESSION OF EX-NOR GATE IS:A. A B + ABB. A B + A B

Correct answer is A(A B + A B )