Top 350+ Solved Digital Electronics and Logic Design MCQ Questions Answer
Q. What is the binary equivalent of the decimal number 368
a. 101110000
b. 110110000
c. 111010000
d. 111100000
Q. (2FAOC)16 is equivalent to
a. (195 084)10
b. (001011111010 00001100)2
c. both (a) and (b)
d. none of these
Q. The simplified form of the Boolean expression (X+Y+XY)(X+Z) is
a. x + y + zx + y
b. xy – yz
c. x + yz
d. xz + y
Q. The output of a logic gate is 1 when all its inputs are at logic 0. the gate is either
a. nand or an xo
b. or or an xn
c. o an and orxor
d. a nor or an xnor
Q. 2's complement of any binary number can be calculated by
a. adding 1\s complementtwice
b. adding 1 to 1\scomplement
c. subtracting 1 from 1\s complement.
d. calculating 1\s compleme nt and inverting most significant bit
Q. Sum-of-Weights method is used
a. to convert from one numbersystem to other
b. to encode data
c. to decode data
d. to convertfrom serial to parralel data
Q. The Unsigned Binary representation can only represent positive binary numbers
a. true
b. false
c. both (a) and (b)
d. none of above
Q. which of the following rules states that if one input of an AND gate is always 1, the output is equal to the other input?
a. a +1 =1
b. a +a =a
c. a.a = a
d. a.1= a
Q. Which of the number is not a representative of hexadecimal system
a. 1234
b. abcd
c. 1001
d. defh
Q. Which one of the following is NOT a valid rule of Boolean algebra?
a. a = a\
b. aa = a
c. a + 1 = 1
d. a + 0 = a