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FAQs on Analog Electronics - Question paper, Elecrical and Electronics Engineering - Electrical Engineering (EE)

1. What are the basic components of an analog electronic circuit?
Ans. The basic components of an analog electronic circuit include resistors, capacitors, inductors, transistors, diodes, and operational amplifiers. These components are used to create various circuit configurations and perform different functions in analog circuits.
2. How does an operational amplifier work in analog electronics?
Ans. An operational amplifier (op-amp) is a high-gain voltage amplifier that amplifies the difference between its two input terminals. It has a non-inverting input (+), an inverting input (-), and an output. By applying feedback, an op-amp can be used to perform various mathematical operations such as amplification, addition, subtraction, integration, differentiation, etc.
3. How does a diode work in analog electronics?
Ans. A diode is a two-terminal electronic component that allows current to flow in one direction while blocking it in the opposite direction. It works based on the principle of the P-N junction. When a positive voltage is applied to the anode (P-side) and a negative voltage to the cathode (N-side), the diode becomes forward-biased and allows current to flow. In the reverse-biased condition, the diode blocks the current flow.
4. What is the purpose of a transistor in analog electronics?
Ans. Transistors are semiconductor devices used to amplify or switch electronic signals and electrical power. They can be used as amplifiers to increase the amplitude of a weak signal or as switches to control the flow of current in a circuit. Transistors come in different types, such as bipolar junction transistors (BJTs) and field-effect transistors (FETs), each with its own characteristics and applications.
5. How does a capacitor function in analog electronics?
Ans. A capacitor is an electronic component that stores and releases electrical energy. It consists of two conductive plates separated by an insulating material called a dielectric. When a voltage is applied across the capacitor, it charges up, storing energy in the form of an electric field. Capacitors are commonly used in analog circuits for various purposes, such as filtering, coupling, smoothing, and timing.
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