Electronics Engineering Interview Questions and Answers

Regulated and Switching Power Supplies Interview Questions and Answers: 1. What is a regulated power supply? Ans. A regulated power supply is an electronic circuit designed to provide constant dc voltage of predetermined value across load terminals, which is independent of variations in load current, ac mains voltage and temperature. 2. What is practical importance of […]

Number Systems and Codes Interview Questions and Answers: 1. What is meant by radix (or base) of a number system? Ans. Radix or base of a number system is the number of digits or distinct symbols it uses to represent various numbers. 2. What is meant by LSB and MSB? Ans. The right most bit of a

Logic Gates and Boolean Algebra Interview Questions and Answers: 1. What is Boolean algebra? Ans. Boolean algebra is a mathematical system of logic in which truth functions are expressed as symbols and then these symbols are manipulated to arrive at conclusion. 2. What are the basic logic elements? Ans. Basic logic elements are NOT gate, AND gate,

Logic Circuits Interview Questions and Answers: 1. What is a combinational circuit? Ans. In a combinational circuit, the output depends upon present input(s) only i.e., not dependent on the previous  input(s). The combinational circuit has no memory element. It consists of logic gates only. 2. Write two characteristics of combinational circuits. Ans. The two characteristics of combinational

Digital Logic Families Interview Questions and Answers: 1. What is the difference between a bipolar logic family and unipolar logic family? Ans. Logic family using BJTs is known as bipolar logic family whereas the logic family using unipolar transistors (MOSFETs) is known as unipolar logic family. 2. Differentiate between saturated and non-saturated logic. Ans. The logic circuits,

Digital to Analog and Analog to Digital Converters Interview Questions and Answers: 1. Why conversion of an analog signal into an equivalent digital signal is essential? Ans. Because most sensors have analog output while much data processing is accomplished with digital computers, analog-to­-digital conversion is essential. 2. What is digital-to-analog conversion? Ans. Basically, D/A conversion is the

Microprocessors Interview Questions and Answers: 1. What is a Microprocessor? Ans. Microprocessor is a program-controlled device, which fetches the instructions from memory, decodes and executes the instructions. 2. What is microcontroller? Ans. Microcontroller is a device that includes microprocessor, memory and I/O signal lines on a single chip, fabricated using VLSI technology. 3. What is a microprocessor

Electronic Instruments (Analog as well as Digital) Interview Questions and Answers: 1. Why ordinary voltmeter cannot be used in electronic circuits? Ans. A moving coil voltmeter draws a large current, hence a large power from the test circuit during measurement. Generally current drawn by the voltmeter does not make much difference in electrical circuit but when

Cathode Ray Oscilloscope Interview Questions and Answers: 1. What is cathode ray oscilloscope (CRO)? Ans. A CRO is an electronic device with a CRT as its main component and other associated circuits consisting of a power supply unit, a sawtooth wave generator, horizontal and vertical amplifiers. 2. How is CRO superior to ordinary measuring instruments? Ans. CRO

Transducers Interview Questions and Answers: 1. Explain in brief the term transducer. Ans. Basically transducer is defined as a device which converts energy or information from one form to another. These are widely used in measurement work because all quantities that need to be measured, cannot be displayed as easily as others. A better measurement of