Boolean Algebra – 1 – 1

1. In a digital control system, there are three inputs a,b,c. The output should be present when at least two inputs are present.
The Boolean expression for the output is :

(a) Mcq series
(b) Mcq series
(c) Mcq series
(d) Mcq series

ANSWER

EXPLANATION

2. Simplified form of :

Mcq series

(a) Mcq series
(b) Mcq series
(c) Mcq series
(d) Mcq series

ANSWER

EXPLANATION

3. Two binary signals a,b are to be compared. The output expression when the two signals are equal is given by :

(a) Mcq series
(b) Mcq series
(c) Mcq series
(d) Mcq series

ANSWER

EXPLANATION

4. The Boolean expression for the sub-class(R) of all digital electronics instruments which are not measuring instruments and have no battery supply is :

(a) Mcq series
(b) Mcq series
(c) Mcq series
(d) Mcq series

ANSWER

EXPLANATION

5. The minimum Boolean expression for the circuit shown below :
Mcq series

(a) XY+XZ+YZ
(b) X+YZ
(c) X+Y
(d) X+Y+Z

ANSWER

EXPLANATION

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