Electronics Combinational Logic Circuits Questions and Answers
Electronics Combinational Logic Circuits questions with answers help students understand digital logic concepts like adders, multiplexers, decoders, and encoders. These aptitude questions and answers with explanations are commonly asked in exams like GATE, BARC, and ISRO. Combinational circuits form the foundation of digital electronics, where the output depends solely on the current inputs. Practicing aptitude questions with solutions PDF builds analytical skills and logical reasoning ability required for competitive and placement exams. For students pursuing electronics and communication engineering, mastering these concepts is essential for technical interviews and academic excellence.
Electronics Combinational Logic Circuits
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29 questions
21. Which circuit converts binary to decimal?
- Multiplexer
- Encoder
- Decoder
- Demultiplexer
22. What is the carry generate function in carry lookahead adder?
- P = A XOR B
- G = A AND B
- S = A XOR B XOR Cin
- Cout = A OR B
23. In a 4-bit comparator, what indicates A > B?
- A3B3' + A2B2' + A1B1' + A0B0'
- A3B3' only
- All bits equal
- A0B0' only
24. What is the purpose of a demultiplexer?
- Selects inputs
- Routes input to one output
- Encodes data
- Stores data
26. What is the sum output expression for a full adder?
- A AND B OR Cin
- A XOR B XOR Cin
- A OR B AND Cin
- A NAND B XOR Cin
27. Which circuit can be used as a universal logic function generator?
- Decoder
- Multiplexer
- Encoder
- Demultiplexer
28. What is the propagation delay in combinational circuits?
- Setup time
- Hold time
- Clock period
- Time from input to output change