Electronics MCQ Questions and Answers
Electronics MCQ Questions with Answers are a key part of preparation for competitive exams like GATE, ISRO, DRDO, and ECIL. These questions assess understanding of fundamental topics such as semiconductors, amplifiers, transistors, and digital circuits. Each question includes clear explanations, helping students grasp key concepts in less time. Practicing electronics MCQs not only boosts technical knowledge but also enhances problem-solving skills needed in both interviews and online test rounds.
Electronics MCQ
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40 questions
21. A NAND gate is called a universal logic element because
- it is used by everybody
- any logic function can be realized by NAND gates alone
- all the minization techniques are applicable for optimum NAND gate realization
- many digital computers use NAND gates.
22. Digital computers are more widely used as compared to analog computers, because they are
- less expensive
- always more accurate and faster
- useful over wider ranges of problem types
- easier to maintain.
23. Most of the digital computers do not have floating point hardware because
- floating point hardware is costly
- it is slower than software
- it is not possible to perform floating point addition by hardware
- of no specific reason.
24. The number 1000 would appear just immediately after
- FFFF (hex)
- 1111 (binary)
- 7777 (octal)
- All of the above.
26. The number of Boolean functions that can be generated by n variables is equal to
- 2n
- 22 n
- 2n-1
- — 2n
27. Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?
- Two’s complement only
- Sign and magnitude and one’s complement only
- Two’s complement and one’s complement only
- All three representations.
28. A hexadecimal odometer displays F 52 F. The next reading will be
- F52E
- G52F
- F53F
- F53O.
29. Positive logic in a logic circuit is one in which
- logic 0 and 1 are represented by 0 and positive voltage respectively
- logic 0 and, -1 are represented by negative and positive voltages respectively
- logic 0 voltage level is higher than logic 1 voltage level
- logic 0 voltage level is lower than logic 1 voltage level.
30. Which of the following gate is a two-level logic gate
- OR gate
- NAND gate
- EXCLUSIVE OR gate
- NOT gate.