20 basic job interview questions with answers for ECE students

Hello everyone I hope that you all are doing good in your lives. As we all know that the job interviews are on the verge, all you might be looking for some way or another to ease your preparation pressure. So here we are to help you guys out. Today we are going to cover 20 plus basic job interview questions that are most frequently asked in an interview session. This question could be also very helpful while preparing for vivas or competitive exams.

Job Interview questions

WHAT IS ELECTRONICS

Basically, it is a branch of technology that deals with the development of circuits using transistors and microcircuits. Or in simple words, it is the study and applications of devices that behave on the basis of the flow of electrons or charged particles.

DIFFERENCE BETWEEN ELECTRONICS AND ELECTRICALS

WHAT IS COMMUNICATION

Communications refer to the transfer of signal or data from one destination to another, i.e. from transmitter to the receiver. This transmission occurs in the presence of a medium.

WHAT ARE TYPES OF COMMUNICATION

There are mainly two types of communication systems:

1. Analog Communication:- It is a mode of communication in which the data or information is transfer using continous time signal which varies with the amplitude, phase and angle.
2. Digital communication:- In digital mode of communication the data is trasfer only in between two states i.e. 1 or 0.

WHAT IS VOLTE IS IT ANALOG OR DIGITAL

VOLTE stands for voice over long-term evolution. It is a digital voice system that makes use of 4G LTE voice signals. However, this mobile network is most suitable for long-distance, high-speed wireless communication.

WHAT IS MICROPROCESSOR AND MICROCONTROLLER

WHAT IS MODULATION

Certainly, modulation is a technique of superimposing the information signal on the carrier signal. Or else in simple words, it is a method through which physical information can be transmitted in electrical signals.

Due to modulation, the shape of the carrier signals changes with the respective change in the information signal.

TYPES OF MODULATION AM, PM, AND FM

AM:- AM stands for amplitude modulation. However, in AM modulation the amplitude of the carrier signal varies with the instantaneous value of the amplitude of a modulating/information signal.

PM:- PM stands for phase modulation. However, in PM modulation the phase of the carrier signal changes with the instantaneous amplitude of the modulating signal.

FM:- FM stands for frequency modulation. However, in FM modulation the frequency of the carrier signal changes with the instantaneous amplitude of the modulating signal.

WHAT IS A ZENER DIODE AND ITS USES

A Zener diode is a semiconductor P-N junction diode that allows current to pass either in forward direction or in the reverse direction. However, this diode is mostly operated in the reverse direction beyond a certain value of voltage. This particular value of voltage is known as the breakdown voltage.

WHAT IS A LOW PASS FILTER? AND DRAW ITS CIRCUIT DIAGRAM

A low-pass filter is a type of filter that only allows a low-frequency signal to pass through it. However, if the signal frequency exceeds the maximum cut-off frequency the signal gets attenuated.

WHAT IS A CROSSTALK

Crosstalk is a phenomenon in which a signal through one channel is interfered with by some other unwanted signal from another channel. This is because of the electromagnetic coupling between the signals.

For example, crosstalk mainly occurs in cables, wireless systems, electronics, and other communication systems

EXPLAIN FULL AND HALF DUPLEX

Full Duplex:- In this mode of transmission the data can be transmitted or received simultaneously over a particular channel. The data transmission is bi-directional. For example, a telephone or a mobile is a full-duplex system

Half Duplex:- However, in half-duplex, the data can be either transmitted or received. In this mode of transmission, the is data can travel in both the direction but not at the same time i.e. we can either transmit or receive. For example walkie talkie, USB, or ethernet.

WHAT IS STOP BAND

A stopband is a band of frequency within a specific range in which the circuit does not allow the signal to pass through. Certainly, these type of bands has two cutoff frequencies one is the upper and the other is lower.

DEFINE SAMPLING THEOREM

According to the sampling theorem, a signal can be reconstructed back to its original form if its sampling frequency is greater than twice its highest frequency factor.

Fs > 2W

Besides we can also specify it as a means through which we can convert the analog signals into digital.

HOW MANY SATELLITES DO WE NEED TO COVER THE ENTIRE EARTH

We need 3 satellites to cover the entire surface of the earth. however, each satellite is at an angle of 120 degrees with other

WHAT IS BARKHAUSEN CRIETERIA

In ECE Barkhausen stability criterion is the parameter on the fundamental bases on which it is decided that the system will oscillate or not. however, the barkhausen criterion states that;

• firstly the close loop gain is equivalent to unity in absolute magnitude; |βA| = 1
• Secondly the phase shift is zero or integral of 2π.

STATE CDMA, TDMA, AND FDMA

FDMA:- FDMA stands for frequency division multiple access it is a type of protocol in which the entire bandwidth is divided into several stations. Each station is assign with a frequency band thus, the station can transmit the data at a frequency only. Each band is distant from the other by using vacant bands. This vacant frequency band is know as a guard.

TDMA:-TDMA stands for time division multiple access it is a type of protocol in which the entire bandwidth is divided into several stations on the basis of time. Every station is assigned a specific time range and thus each station can transmit data only for that specific time period only. However, a particular station can only transmit in its mentioned time range.

CDMA:- CDMA stands for code division multiple access it is a type of protocol in which we can transmit the data simultaneously through all the stations. we can transmit the data at any time and at any frequency.

WHAT IS SDLC? AND MENTION ONE OF IT’S MOST POPULAR MODEL

SDLC stands for software development life cycle. It is a logical and detailed framework that is design in such a way that it covers all the aspects of software development. This cycle has a number of models each model is responsible for a particular function. it also goes by the name software development process.

The waterfall model is one of the most popular and basic models in SDLC.

WHAT IS OOPS CONCEPT AND NAME ITS PROPERTIES IN C++

OOPS stands for object-oriented programming. However, it has a self-explaining name that it uses an object in programming. it has properties like inheritance, polymorphism, abstraction, data hiding and etc.

However class and its object are the two major features of c++ that make it more realistic and different from C

EXPLAIN THE CONCEPT OF INHERITANCE IN JAVA

Inheritance is a property by which a function or an object can be made reusable. Syntax of inheritance in java;

Class child class name extend parent class name
{
methods and files
}

Certainly, we use Extend keyword for inheriting the property of the parent/super class to the child/sub class.

Conclusion to job interview questions

However here we are at the end of the blog (20 basic job interview questions). I hope that you like it and have got help with the preparation. If you do have any doubt then please let us know, we will be getting more examples questions for you all in the future. If you did like then please make sure to share it with others. Besides these are the only technical job interview questions there are other rounds as well for example written, HR interviews, and more.

Regards;

Have a nice day 🙂

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