Electronics Engineering Interview Questions and Answers

Field Effect Transistors (FETs) Interview Questions and Answers: 1. What is the major difference between a bipolar and a unipolar device ? Ans. In a bipolar device, current conduction is by both majority carriers and minority carriers (both by holes as well as electrons), such as in a case of BJT. On the other hand, in […]

Single Stage Transistor Amplifiers Interview Questions and Answers: 1. What is an amplifier? Ans. The device that amplifies the amplitude of the input signal is called the amplifier. An amplifier may be defined as a device that increases the current, voltage or power of an input signal with the help of a transistor by furnishing the

Amplifier Frequency Response Interview Questions and Answers: 1. What is meant by frequency response of an amplifier? Ans. The frequency response is the graph of voltage gain versus input frequency. 2. What is midband range? Ans. The midband range is the region where coupling and bypass capacitors act as short circuits, and stray and transistor capacitances act

Multistage Amplifier Interview Questions and Answers: 1. Differentiate single stage and multistage amplifiers. Ans. When only one transistor with associated circuit is used for increasing the strength of a weak signal, the circuit is known as single stage amplifier while a transistor circuit containing two or more stages of amplification is known as a multistage amplifier.

Large Signal or Power Amplifiers Interview Questions and Answers: 1. What is meant by power amplifier? Ans. Power amplifier is meant to raise the power level of the input signal and may be defined as a device that converts dc power into ac power and whose action is controlled by the input signal. 2. How do

Tuned Amplifiers Interview Questions and Answers: 1. What is a tuned amplifier? Ans. The amplifier used for amplifying a signal of specific frequency or narrowband of frequencies is known as a tuned amplifier. 2. What is the fundamental difference between audio amplifiers and tuned amplifiers? Ans. The fundamental difference between audio amplifiers and tuned amplifiers is the

Feedback Amplifier Interview Questions and Answers: 1. What is feedback in amplifiers? Ans. The process of combining a fraction of output energy back to the input is called the feedback. 2. Define transconductance and transresistance amplifiers. Ans. The amplifier is transconductance amplifier in which the input signal is voltage and its output signal is current. The ideal

Differential Amplifier Interview Questions and Answers: 1. What is differential amplifier? Ans. An amplifier, which is designed to amplify the difference between two input signals is called the differential amplifier. The differential amplifier is also referred to as a difference amplifier. 2. Advent of ICs made the differential amplifier extremely popular in both BJT and MOS

Sinusoidal Oscillators Interview Questions and Answers: 1. What is an oscillator? Ans. Oscillator may be defined as a circuit which generates an ac output signal of very high frequency without requiring any externally applied input signal or it may be defined as an electronic source of alternating current (or voltage) having sinusoidal or nonsinusoidal (square, sawtooth

Modulation and Demodulation Interview Questions and Answers: 1. What is meant by communication? Ans. Communication is the process of establishing connection or link between two points for information exchange. 2. What is communication system? Ans. The electronic equipment’s used in communication are called communication equipment’s. Different communication equipment’s when assembled together form a communication system. 3. What