Infosys Electrical Supervisor Interview Questions and Answers

A dropout switch is an electrical switch that opens when the voltage drops below a certain level.

• It is used to protect electrical equipment from damage due to low voltage.

• It can be manually or automatically reset.

• Examples include low voltage disconnect switches and thermal overload switches.

• It is commonly used in battery systems to prevent over-discharge.

• It is also used in power distribution systems to prevent damage t

A diode is an electronic component that allows current to flow in only one direction.

• It has two terminals, an anode and a cathode.

• It is commonly used in rectifiers to convert AC to DC.

• It can also be used as a voltage regulator or a signal modulator.

• It is made of semiconductor materials such as silicon or germanium.

• It has a forward voltage drop that varies depending on the material and temperature.

HRC fuse stands for High Rupturing Capacity fuse. It is a type of fuse that can withstand high fault currents.

• HRC fuse is designed to protect electrical equipment from overcurrents.

• It has a high breaking capacity and can interrupt high fault currents without causing damage to the equipment.

• HRC fuse is commonly used in industrial and commercial applications.

• It is available in different sizes and ratings to suit differen...read more

The RPM of a 4 pole motor is determined by the frequency of the power supply and the number of poles.

• The RPM of a 4 pole motor is directly proportional to the frequency of the power supply.

• The RPM of a 4 pole motor is inversely proportional to the number of poles.

• For example, a 4 pole motor connected to a 60 Hz power supply will have an RPM of approximately 1800.

• If the power supply frequency is increased to 120 Hz, the...read more

Yes, 10 kW is equal to 13.41 HP.

• 1 kW = 1.34 HP

• Therefore, 10 kW = 10 x 1.34 = 13.41 HP

• Conversion formula: HP = kW x 1.34

An isolator is an electrical switch that isolates a part of the circuit from the rest for maintenance or safety purposes.

• Isolators are used to disconnect a circuit from the power source.

• They are often used in high voltage applications.

• Isolators are different from circuit breakers or fuses, as they do not provide protection against overloads or short circuits.

• They are commonly used in industrial settings and power distr...read more

DC voltage is a constant voltage while AC voltage changes direction periodically.

• DC voltage is a steady voltage that flows in one direction only

• AC voltage changes direction periodically and has a frequency measured in Hertz

• DC voltage is commonly used in batteries and electronic devices

• AC voltage is used in household power outlets and electrical grids

A motor's speed can be controlled by a variable frequency drive (VFD).

• A VFD can adjust the frequency of the electrical power supplied to the motor, which in turn controls its speed.

• VFDs are commonly used in industrial settings to control the speed of motors powering machinery.

• VFDs can also improve energy efficiency by reducing the amount of power consumed by the motor.

• Other methods of controlling motor speed include us...read more

I am a software developer with a passion for coding and problem-solving. My family is supportive and has always encouraged my career in tech.

• Experienced software developer

• Passionate about coding and problem-solving

• Supportive family that encourages my career in tech

Yes, I can remove all the pcs from the lab and keep them in another lab right now.

• Ensure all the necessary equipment and tools are available for the move

• Coordinate with the lab staff to ensure a smooth transition

• Label and document each PC for easy identification and setup in the new lab

• Ensure proper packaging and handling to prevent any damage during the move

Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.

• The first two numbers of the series are always 0 and 1

• The next number is the sum of the previous two numbers

• The series goes on infinitely: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...

• Pseudo code: 1. Initialize variables a=0, b=1, c=0 2. Print a and b 3. Repeat steps 4-6 until desired number of terms 4. c=a+b 5. Pr

Algorithm for matrix multiplication

• Create a result matrix with dimensions of the two input matrices

• Iterate through each row and column of the result matrix

• For each element in the result matrix, multiply corresponding row in first matrix with corresponding column in second matrix

• Add the products obtained in the previous step to get the final value for the element

I worked on a project that involved sentiment analysis of customer reviews using Naive Bayes algorithm.

• The project involved collecting customer reviews from various sources.

• Preprocessing the data by removing stop words, stemming, and tokenizing.

• Used Naive Bayes algorithm for sentiment analysis.

• The algorithm was chosen because of its simplicity and effectiveness in text classification tasks.

• The accuracy of the model was

Developed a web-based project management system for a construction company.

• Used PHP and MySQL for backend development

• Implemented user authentication and authorization

• Designed a responsive UI using Bootstrap

• Integrated Google Maps API for location tracking

• Enabled file uploads and downloads for project documents

EXTC and IT are not mutually exclusive fields. My knowledge in EXTC complements my skills in IT.

• My knowledge in EXTC gives me a strong foundation in electronics and communication, which are essential in the IT industry.

• I have also gained programming skills through my coursework and projects in EXTC.

• IT is a rapidly growing field with a lot of opportunities, and I believe my skills and knowledge make me a strong candidat...read more

Yes, I am open to relocation for the right opportunity.

• I am willing to relocate for a position that aligns with my career goals

• I am excited about the prospect of exploring a new city and culture

• I am flexible and adaptable to new environments

I am familiar with several programming languages.

• Java

• Python

• C++

• JavaScript

• SQL

A leader inspires and motivates while a manager plans and organizes.

• Leaders focus on the big picture while managers focus on details

• Leaders lead by example while managers delegate tasks

• Leaders inspire and motivate while managers enforce rules and policies

• Leaders are visionaries while managers are implementers

• Examples of leaders: Steve Jobs, Martin Luther King Jr. Examples of managers: Tim Cook, COO of Apple

Yes, I am open to relocation for the right opportunity.

• I am willing to relocate for the right job opportunity

• I am open to exploring new places and cultures

• I understand that relocation may come with challenges, but I am prepared to face them

• I am excited about the prospect of starting fresh in a new location

I'm sorry, I don't have that information.

• N/A

The TCS aptitude test was challenging but fair.

• The test covered a wide range of topics including math, logic, and English.

• The questions were designed to test problem-solving skills and critical thinking.

• Time management was crucial as there were many questions to answer in a limited time.

• Overall, the test was a good indicator of one's aptitude for software engineering.