Electronics and communications. - One Line Questions

1. Which component is used to measure voltage in a circuit? — Voltmeter
2. What is the term for the phenomenon where a signal's amplitude decreases as it travels through a medium? — Attenuation
3. What is the term for the process of converting a digital signal into an analog signal? — Digital-to-Analog Conversion (DAC)
4. What is the term for the process of converting an analog signal into a digital signal? — Analog-to-Digital Conversion (ADC)
5. Which logic gate outputs '1' only if all inputs are '0'? — NOR gate
6. What does 'AM' stand for in radio communication? — Amplitude Modulation
7. What is the term for the range of frequencies over which a communication system operates? — Bandwidth
8. Which type of transistor uses a gate, drain, and source terminal? — Field-Effect Transistor (FET)
9. What is the basic unit of digital information? — Bit
10. Which component opposes the flow of electric current and dissipates energy as heat? — Resistor
11. Which type of communication system uses light pulses to transmit information? — Fiber optic
12. What property of a conductor is measured in Ohms? — Resistance
13. What is the term for the process of combining a message signal with a carrier wave? — Modulation
14. In fiber optic communication, what phenomenon is used to guide light signals? — Total Internal Reflection
15. What is the term for a signal whose amplitude varies continuously with time? — Analog signal
16. Which electronic component acts like a variable resistor controlled by an electrical signal? — Transistor
17. Which semiconductor device is primarily used for switching and amplification of electronic signals? — Transistor
18. An inductor stores energy in what type of field? — Magnetic field
19. What is the unit of electrical inductance? — Henry
20. Which communication technique involves dividing a single communication channel into multiple time slots? — Time Division Multiplexing (TDM)
21. What does 'FM' stand for in radio communication? — Frequency Modulation
22. Which fundamental semiconductor material is most commonly used in integrated circuits (ICs)? — Silicon (Si)
23. What is the primary advantage of digital communication over analog communication? — Improved accuracy and noise immunity
24. What is the main characteristic of a superconductor at or below its critical temperature? — Zero electrical resistance
25. Which type of wave is primarily used for satellite communication? — Microwaves
26. What does 'LED' stand for? — Light Emitting Diode
27. Which semiconductor device is commonly used in power supplies for voltage regulation? — Zener Diode
28. What is the unit of electrical capacitance? — Farad
29. Which of the following is a basic building block of digital electronic circuits? — Logic Gate
30. Which type of semiconductor doping creates an excess of free electrons? — N-type doping
31. What is the fundamental difference between a P-type and an N-type semiconductor? — P-type has excess holes, N-type has excess electrons
32. What is the name of the phenomenon where a semiconductor device emits light when current flows through it? — Electroluminescence
33. Which type of resistor's resistance changes significantly with temperature? — Thermistor
34. Which of the following is a semiconductor device that amplifies current? — Transistor
35. What does 'RF' stand for in electronics? — Radio Frequency
36. What is the term for the unwanted electrical energy that interferes with the normal operation of electronic circuits? — Noise
37. What is the 'band gap' in a semiconductor material? — The energy difference between the valence band and the conduction band
38. Which type of sensor converts light energy into electrical energy? — Both B and C
39. What is the primary function of a diode in an electronic circuit? — To allow current flow in one direction only
40. What is the primary function of a filter circuit? — To block or pass signals of specific frequencies
41. What is the function of a 'modem'? — To convert digital signals to analog and vice versa
42. What is the purpose of a transformer? — To change AC voltage levels
43. What is the function of a rectifier circuit? — To convert AC to DC
44. What is the function of an oscillator circuit? — To generate a repetitive waveform (signal)
45. What is the main purpose of a capacitor in a circuit? — To store energy in an electric field
46. What is the primary role of an operational amplifier (op-amp)? — To amplify signals
47. What is the primary function of a CPU (Central Processing Unit) in a computer system? — To execute instructions and process data
48. What is the core function of a 'microprocessor'? — To perform arithmetic and logic operations
49. A transistor typically has how many terminals? — Three
50. Which type of electronic component is used to store data in most modern computers? — Integrated Circuit (IC)
All One Line Questions
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