Signals and Switches Questions and Answers
Signals and Switches form the foundation of Digital Electronics, enabling the understanding of binary logic and circuit design. This section on Signals and Switches questions with answers is crucial for aspirants of GATE, DRDO, and ISRO technical exams. Here, you’ll explore digital signal behavior, voltage levels, transistor switching, and logic circuit implementations. Solving these electronics aptitude questions with explanations builds your understanding of how switching devices control logic states in digital systems. Regular practice ensures better performance in technical exams and interviews focusing on circuit-level analysis and Boolean logic.
Signals and Switches
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27 questions
21. What is the advantage of using serial data transmission over parallel data transmission?
- It is slower.
- Only one pair of wires is required.
- More people use it.
- It is faster.
22. A TTL totem-pole circuit is designed so that the output transistors:
- are always on together
- provide phase splitting
- provide voltage regulation
- are never on together
23. What is the advantage of using CMOS logic over TTL?
- It switches faster.
- It uses less power.
- It is larger.
- cost
24. What is used to graphically show the time relationship between two or more digital waveforms?
- reference diagram
- timing diagram
- voltage curve
- load line
25. The period of a waveform is the percentage of time the signal is HIGH.
- TRUE
- FALSE
26. What is a disadvantage of CMOS in place of TTL?
- It switches slower.
- It uses less power.
- It is smaller.
- cost
27. The units for the HIGH time for a periodic wave are ________.
- seconds
- hertz
- cycles
- %