Q1. Which of the following is a universal gate?
a) AND
b) OR
c) XOR
d) NAND
Answer: (d) NAND (NOR is also a universal gate)
Q2. Which characteristic best describes an analog signal?
a) It is discrete in nature.
b) It has only two states (HIGH/LOW).
c) It is continuous and can take any value within a range.
d) It uses binary coding exclusively.
Answer: (c) It is continuous and can take any value within a range.
Q3. In digital electronics, a logic HIGH typically represents which binary value?
a) 0
b) -1
c) 1
d) 50% duty cycle
Answer: (c) 1
Q4. The number system with a base of 2 is called:
a) Decimal
b) Octal
c) Hexadecimal
d) Binary
Q5. A group of 8 bits is known as a:
a) Nibble
b) Word
c) Byte
d) Kilobyte
Answer: (c) Byte
Q6. Which of the following systems is immune to noise compared to others?
a) Analog systems
b) Digital systems
c) Hybrid systems
d) Linear systems
Answer: (b) Digital systems
Q7. Which basic logic gate implements the Boolean expression \(X=A+B\)?
a) AND
b) OR
c) NOT
d) XOR
Answer: (b) OR
Q8. The output of an AND gate is HIGH (1) only when:
a) At least one input is HIGH.
b) All inputs are LOW.
c) All inputs are HIGH.
d) Inputs are different.
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