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BASIC ELECTRONICS Questions and Answers pdf free download for eee & ece. interview questions,mcqs,objective type questions,lab viva. Most Frequently asked Basic Electronics Interview Questions and Answers for electronics graduates or freshers looking for job opportunities. Frequently Asked Basic Electronics Interview Questions and Answers. 1) Expand ECE. Electronics & Communication Engineering. 2) What is Electronic?.

Basic Electronics Interview Questions Answers Pdf

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A set of Basic Electronics Questions and Answers. The article includes questions on Semiconductors, Transistors, OP-Amps, Amplifiers, and many more. + Electronics Interview Questions and Answers, Question1: What is Electronic ? Question2: What is communication? Question3: Different types of. Here you can find Electronics interview questions with answers and explanation. download Electronics quiz questions with answers as PDF files and eBooks.

By default, all the classes, methods, and variables are of default scope. Private The private class, methods, or variables defined as private can be accessed within the class only.

The methods or variables defined as static are shared among all the objects of the class. The static is the part of the class and not of the object. The static variables are stored in the class area, and we do not need to create the object to access such variables.

Therefore, static is used in the case, where we need to define variables or methods which are common to all the objects of the class. For example, In the class simulating the collection of the students in a college, the name of the college is the common attribute to all the students. Therefore, the college name will be defined as static.

There are various advantages of defining packages in Java. Packages avoid the name clashes. The Package provides easier access control. We can also have the hidden classes that are not visible outside and used by the package. It is easier to locate the related classes. Now, their sum 30 is treated as the string and concatenated with the string Javatpoint.

Therefore, the output will be 30Javatpoint. In the second case, the string Javatpoint is concatenated with 10 to be the string Javatpoint10 which will then be concatenated with 20 to be Javatpoint In the second case, The numbers 10 and 20 will be multiplied first to be because the precedence of the multiplication is higher than addition.

The result will be treated as the string and concatenated with the string Javatpointto produce the output as Javatpoint However, they have been categorized in many sections such as constructor interview questions, static interview questions, Inheritance Interview questions, Abstraction interview question, Polymorphism interview questions, etc.

It is a programming paradigm based on objects having data and methods defined in the class to which it belongs.

Basic Electronics Questions for Interview

Object-oriented paradigm aims to incorporate the advantages of modularity and reusability. Objects are the instances of classes which interacts with one another to design applications and programs. There are the following features of the object-oriented paradigm.

Follows the bottom-up approach in program design. Focus on data with methods to operate upon the object's data Includes the concept like Encapsulation and abstraction which hides the complexities from the user and show only functionality. Implements the real-time approach like inheritance, abstraction, etc. The Object is the real-time entity having some state and behavior. In Java, Object is an instance of the class having the instance variables as the state of the object and the methods as the behavior of the object.

The object of a class can be created by using the new keyword. There are the following basic differences between the object-oriented language and object-based language. Object-oriented languages follow all the concepts of OOPs whereas, the object-based language doesn't follow all the concepts of OOPs like inheritance and polymorphism. Object-oriented languages do not have the inbuilt objects whereas Object-based languages have the inbuilt objects, for example, JavaScript has window object.

Examples of object-oriented programming are Java, C , Smalltalk, etc. All object references are initialized to null in Java.

The constructor can be defined as the special type of method that is used to initialize the state of an object. It is invoked when the class is instantiated, and the memory is allocated for the object.

Every time, an object is created using the new keyword, the default constructor of the class is called. The name of the constructor must be similar to the class name. The constructor must not have an explicit return type. Based on the parameters passed in the constructors, there are two types of constructors in Java. Default Constructor: default constructor is the one which does not accept any value.

The default constructor is mainly used to initialize the instance variable with the default values. It can also be used for performing some useful task on object creation.

A default constructor is invoked implicitly by the compiler if there is no constructor defined in the class. Parameterized Constructor: The parameterized constructor is the one which can initialize the instance variables with the given values.

In other words, we can say that the constructors which can accept the arguments are called parameterized constructors. The purpose of the default constructor is to assign the default value to the objects. The java compiler creates a default constructor implicitly if there is no constructor in the class.

Basic Electronics Questions and Answers

In angle modulation, the frequency or phase may vary according to the amplitude of given signal 49 What is Biasing?

Why is it 3 dB, not 1 dB? How can you rectify it? Example:transistors etc,.

Intel's , , and are examples of microprocessors. Microchip's pic series and Atmel's AVR series are examples of micro controllers. When biased in the forward direction it behaves just like a normal signal diode passing the rated current, but when a reverse voltage is applied to it the reverse saturation current remains fairly constant over a wide range of voltages.

The reverse voltage increases until the diodes breakdown voltage VB is reached at which point a process called Avalanche Breakdown occurs in the depletion layer and the current flowing through the zener diode increases dramatically to the maximum circuit value which is usually limited by a series resistor.

This breakdown voltage point is called the "zener voltage" for zener diodes. This involves linear electronic circuits such as passive filters, active filters, additive mixers, integrators and delay lines. It also involves non-linear circuits such as compandors, multiplicators frequency mixers and voltage- Freshers Jobs In India Interview Preparation Puzzles www. Discrete time signal processing is for sampled signals that are considered as defined only at discrete points in time, and as such are quantized in time, but not in magnitude.

Analog discrete-time signal processing is a technology based on electronic devices such as sample and hold circuits, analog time-division multiplexers, analog delay lines and analog feedback shift registers. This technology was a predecessor of digital signal processing see below , and is still used in advanced processing of gigahertz signals. The concept of discrete-time signal processing also refers to a theoretical discipline that establishes a mathematical basis for digital signal processing, without taking quantization error into consideration.

RS Recommended Standard - is a telecommunications standard for binary serial communications between devices.

It supplies the roadmap for the way devices speak to each other using serial ports. The devices are commonly referred to as a DTE data terminal equipment and DCE data communications equipment ; for example, a computer and modem, respectively 61 What is Lenz law? An induced current is always in such a direction as to oppose the motion or change causing it whenever there is an induced electromotive force emf in a conductor, it is always in such a direction that the current it would produce would oppose the change which causes the induced emf.

Basic Electronics Questions and Answers

If the change is the motion of a conductor through a magnetic field, the induced current must be in such a direction as to produce a force opposing the motion. If the change causing the emf is a change of flux threading a coil, the induced current must produce a flux in such a direction as to oppose the change.

Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands 1 MHz each in the range MHz. A piconet is the type of connection that is formed between two or more Bluetooth-enabled devices, one device takes the role of 'master', and all other devices assume a 'slave' role for synchronization reasons.

Where as a scatternet is a number of interconnected piconets that supports communication between more than 8 devices. Scatternets can be formed when a member of one piconet either the master or one of the slaves elects to participate as a slave in a second, separate piconet.

The prediction by Gordon Moore cofounder of the Intel Corporation that the number of transistors on a microprocessor would double periodically approximately every 18 months.

The minimum satellites recquired to track your position is three. That is why it is known as triangulation.

Currently, there are 32 satellites in the GPS system. The exact number varies as old satellites fail or are retired, and new satellites are sent up to replace them. ZigBee is a low-cost, low-power, wireless mesh networking standard.

First, the low cost allows the technology to be widely deployed in wireless control and monitoring applications. Second, the low power-usage allows longer life with smaller batteries.

Third, the mesh networking provides high reliability and more extensive range.

ZigBee relies on the basic A Field-programmable Gate Array FPGA is an integrated circuit designed to be configured by the customer or designer after manufacturing—hence "field-programmable". Applications of FPGAs include digital signal processing, software-defined radio, aerospace and defense systems, ASIC prototyping, medical imaging, computer vision, speech recognition,cryptography, bioinformatics, computer hardware emulation, radio astronomy, metal detection and a growing range of other areas.

MIMO multiple input, multiple output is an antenna technology for wireless communications in which multiple antennas are used at both the source transmitter and the destination receiver. The antennas at each end of the communications circuit are combined to minimize errors and optimize data speed. VoIP involves sending voice information in digital form in discrete packets rather than by using the traditional circuit-committed protocols of the public switched telephone network PSTN.

A major advantage of VoIP and Internet telephony is that it avoids the tolls charged by ordinary telephone service. A transformer is a static device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through thesecondary winding.

This varying magnetic field induces a varying electromotive force EMF or "voltage" in the secondary winding.

This effect is called mutual induction. EDFA is an optical repeater device that is used to boost the intensity of optical signals being carried through a fiber optic communications system. An optical fiber is doped with the rare earth element erbium so that the glass fiber can absorb light at one frequency and emit light at another frequency. An external semiconductor laser couples light into the fiber at infrared wavelengths of either or nanometers.

This action excites the erbium atoms. Additional optical signals at wavelengths between and nanometers enter the fiber and stimulate the excited erbium atoms to emit photons at the same wavelength as the incoming signal.Free electrons C.

Electronics and Communications Engineering Practice Tests. Challenge, Achievement, Recognition For any person motivation is the main factor which should make him work in an efficient manner.

Describe a time you had to adapt your style? Default Default are accessible within the package only. Where do we use AM and FM? Question In this situation the current can still be limited by the limited number of free electrons produced by the applied voltage so it is possible to cause Zener breakdown without damaging the semiconductor.