100+ Vilas Javdekar Developers Interview Questions and Answers

Current CTC refers to the current salary package of the candidate.

• Current CTC is the total amount of money a candidate is currently earning from their job.

• It includes the basic salary, bonuses, incentives, and any other monetary benefits.

• Candidates may choose to disclose their current CTC during job interviews to negotiate a better salary package.

• Example: If a candidate's current CTC is $50,000 per year, they may expect a higher salary offer from a new employer.

Expected CTC is the salary range that the candidate is looking for in a new job.

• Research the average salary for Software Developers in your area

• Consider your experience, skills, and the company's size and industry

• Be prepared to negotiate based on the job responsibilities and benefits offered

Brayton and Rankine cycles are thermodynamic cycles used in power plants and engines.

• Brayton cycle is used in gas turbine engines where air is compressed, heated, expanded through a turbine, and then exhausted.

• Rankine cycle is used in steam power plants where water is heated to produce steam, which expands through a turbine to generate electricity.

• Both cycles involve a series of processes to convert heat energy into mechanical work.

• Brayton cycle has a higher efficiency for ga...read more

Introduce automation tools and establish clear communication channels

• Implement automated testing to reduce manual effort and increase efficiency

• Use collaboration tools like JIRA to track progress and communicate with team members

• Establish clear guidelines and processes to avoid confusion and delays

• Regularly review and update processes to ensure they are still effective

• Encourage team members to share ideas and suggestions for improvement

Header clearance refers to the space required for the installation and maintenance of piping headers.

• Header clearance is the distance between the top of the header and the ceiling or any obstruction above it.

• It is important to ensure sufficient clearance for proper installation, maintenance, and operation of the piping system.

• Examples of obstructions that may require clearance include beams, ductwork, and other piping systems.

Common 2D drawing software for HVAC design includes AutoCAD, Revit, and SketchUp, facilitating precise layouts and schematics.

• AutoCAD: Widely used for creating detailed HVAC layouts and schematics.

• Revit: Offers parametric modeling, ideal for integrated building design.

• SketchUp: Useful for quick 3D modeling and visualization of HVAC systems.

• SolidWorks: Often used for mechanical design, including HVAC components.

My strengths include strong analytical skills, attention to detail, and the ability to work well under pressure.

• Strong analytical skills - able to analyze data effectively and draw meaningful insights

• Attention to detail - meticulous in reviewing and verifying data to ensure accuracy

• Ability to work well under pressure - can handle tight deadlines and high-pressure situations effectively

PHP is a server-side scripting language used for web development.

• PHP stands for Hypertext Preprocessor.

• It is commonly used to create dynamic web pages.

• PHP can interact with databases like MySQL to create dynamic content.

• It is open source and widely supported by web servers.

• Popular content management systems like WordPress and Drupal are built using PHP.

Three-dimensional drawing is a technique that represents objects in three dimensions, using height, width, and depth.

• Three-dimensional drawing adds depth and realism to objects.

• It is commonly used in architecture, engineering, and design.

• Examples include 3D models, blueprints, and CAD drawings.

Handled various types of projects including web development, mobile app development, and software automation.

• Web development projects using technologies like HTML, CSS, JavaScript, and PHP

• Mobile app development projects for iOS and Android platforms using Swift, Java, and React Native

• Software automation projects using tools like Selenium and Appium

• Integration projects using APIs like REST and SOAP

• Database management projects using SQL and NoSQL databases

• Cloud computing projec...read more

Otto cycle is a theoretical thermodynamic cycle that describes the functioning of a typical spark ignition piston engine.

• Consists of four processes: isentropic compression, constant volume heat addition, isentropic expansion, and constant volume heat rejection

• Used in spark ignition engines like gasoline engines

• Efficiency of the cycle depends on compression ratio

• Named after Nikolaus Otto, who invented the four-stroke internal combustion engine

I have extensive experience in budgeting and costing, including creating and managing budgets, forecasting expenses, and identifying cost-saving opportunities.

• Created and managed budgets for multiple projects, ensuring expenses were within allocated funds

• Forecasted expenses for upcoming quarters and adjusted budgets accordingly

• Identified cost-saving opportunities by analyzing expenses and negotiating with vendors

• Implemented cost-saving measures, resulting in a 10% reduction i...read more

A HalfAdder program in VHDL is used to perform addition of two binary digits without considering the carry.

• Declare two input signals A and B of type std_logic.

• Declare two output signals Sum and Cout of type std_logic.

• Implement the XOR gate for Sum and AND gate for Cout.

• Example: A <= '1'; B <= '0'; Sum <= A XOR B; Cout <= A AND B;

I am expecting a competitive CTC based on my experience and skills.

• I have researched the industry standards and my market value

• I am open to negotiation based on the job responsibilities and benefits

• I am looking for a package that reflects my expertise and contribution to the company

• I am willing to discuss the CTC in detail during the interview process

Nodejs is single threaded to optimize performance and avoid blocking I/O operations.

• Nodejs uses an event loop to handle I/O operations asynchronously.

• Single threaded architecture simplifies development and debugging.

• Nodejs can still handle multiple requests concurrently through event-driven programming.

• Worker threads can be used for CPU-intensive tasks.

• Examples of blocking I/O operations include file system operations and network requests.

Callback hell is a situation in asynchronous programming where multiple nested callbacks make the code difficult to read and maintain.

• Callback hell occurs when there are multiple levels of nested callbacks in asynchronous code.

• It makes the code difficult to understand, debug, and maintain.

• Promises and async/await are solutions to avoid callback hell.

• Example: nested callbacks in JavaScript AJAX requests.

Android is a mobile operating system developed by Google, based on the Linux kernel.

• Developed by Google

• Based on Linux kernel

• Used in smartphones, tablets, smartwatches, etc.

Kotlin is a statically typed programming language that runs on the Java Virtual Machine (JVM) and can also be compiled to JavaScript source code.

• Kotlin is interoperable with Java, meaning you can use Java libraries and frameworks in Kotlin code.

• Kotlin is concise, reducing boilerplate code compared to Java.

• Kotlin supports functional programming features like higher-order functions and lambdas.

• Kotlin is officially supported for Android development by Google.

GD&T stands for Geometric Dimensioning and Tolerancing.

• It is a system used to define and communicate engineering tolerances and dimensions.

• It ensures that parts are manufactured to the correct size and shape, and fit together properly.

• GD&T uses symbols and annotations to convey information about the part's geometry, such as flatness, perpendicularity, and concentricity.

• It is commonly used in industries such as aerospace, automotive, and manufacturing.

• GD&T is important for ens...read more

Phishing is a type of cyber attack where attackers impersonate legitimate entities to deceive individuals into providing sensitive information.

• Phishing emails often contain links to fake websites that mimic legitimate ones

• Attackers may also use phone calls or text messages to trick individuals into revealing personal information

• Common examples include emails pretending to be from banks asking for account details or from companies requesting login credentials

A diode is a semiconductor device that allows current to flow in only one direction.

• Diodes have two terminals: an anode and a cathode.

• When a voltage is applied to the anode, current flows through the diode.

• However, when a voltage is applied to the cathode, the diode blocks current flow.

• This is because the diode is designed to have a high resistance in the reverse direction.

• Diodes are commonly used in rectifiers, voltage regulators, and signal limiters.

An interface in software development defines a contract for classes to implement, specifying methods and properties.

• Interfaces in programming languages like Java and C# allow for multiple inheritance by defining a set of methods that a class must implement.

• Interfaces are used to enforce a certain behavior in classes that implement them.

• Interfaces provide a way to achieve abstraction and polymorphism in object-oriented programming.

• Example: In Java, the Comparable interface is ...read more

Boilers are used to generate steam or hot water for heating or power generation. Components include burners, tubes, drums, and controls.

• Types of boilers include fire tube, water tube, and electric boilers

• Components of a boiler include burners, tubes, drums, economizers, superheaters, and controls

• Examples of boilers: Fire tube - Scotch marine boiler, Water tube - Babcock and Wilcox boiler, Electric - Electrode boiler

Refrigeration cycles are thermodynamic processes used to remove heat from a space and maintain a lower temperature.

• Refrigeration cycles involve four main components: compressor, condenser, expansion valve, and evaporator.

• The cycle starts with the compressor compressing low-pressure refrigerant gas into high-pressure gas.

• The high-pressure gas then flows into the condenser where it releases heat and condenses into a high-pressure liquid.

• The high-pressure liquid passes through t...read more

UART (Universal Asynchronous Receiver/Transmitter) protocol is a communication protocol used for serial communication between devices.

• UART is a popular communication protocol used for transmitting and receiving data between devices asynchronously.

• It uses two wires for communication - one for transmitting data (TX) and one for receiving data (RX).

• UART communication involves start and stop bits to frame the data being transmitted.

• Baud rate is an important parameter in UART comm...read more

D0178 is a CPT code used for a psychiatric diagnostic evaluation.

• CPT code used in medical billing

• Specifically used for psychiatric diagnostic evaluations

• Helps healthcare providers bill for services related to mental health assessments

Promiscuous mode in VMware allows a virtual machine to receive all network traffic, regardless of the destination MAC address.

• Promiscuous mode is a setting in VMware that allows a virtual machine to see all network traffic on a virtual switch.

• This can be useful for network monitoring, troubleshooting, or security analysis.

• Promiscuous mode should be used with caution as it can potentially expose sensitive information to unauthorized users.

A portal frame is a type of structural frame commonly used in buildings and bridges.

• Consists of vertical columns and horizontal beams connected together to form a rigid structure

• Provides lateral stability to the building or bridge

• Commonly used in industrial buildings, warehouses, and agricultural structures

Sheetmetal design details involve creating detailed drawings and specifications for sheetmetal components.

• Understanding material properties and thicknesses for sheetmetal design

• Creating accurate flat patterns for manufacturing

• Considering bend allowances and tolerances

• Utilizing CAD software for precise design

• Incorporating features like flanges, ribs, and stiffeners for strength

• Ensuring proper nesting of parts for efficient material usage

The AutoCad test on system involves assessing the candidate's proficiency in using AutoCad software for electrical instrumentation design.

• Demonstrate ability to create and modify electrical drawings using AutoCad

• Show understanding of electrical symbols and standards used in AutoCad

• Explain how AutoCad can be used to design electrical instrumentation systems

• Provide examples of previous projects where AutoCad was utilized for electrical instrumentation design

The team has a strong capacity to handle tasks efficiently and effectively.

• The team has a diverse skill set and experience.

• Regular training and development programs are conducted to enhance their capacity.

• The team is well-organized and has clear roles and responsibilities.

• The team has a track record of successfully completing projects within deadlines.

• The team has a positive attitude and works well under pressure.

Properties of material refer to characteristics such as strength, hardness, ductility, and conductivity.

• Strength: ability to withstand applied stress without failure (e.g. tensile strength)

• Hardness: resistance to deformation or scratching (e.g. Rockwell hardness)

• Ductility: ability to deform without breaking (e.g. elongation at break)

• Conductivity: ability to conduct heat or electricity (e.g. thermal conductivity)

Product design concept involves creating a blueprint for a product that meets the desired functionality and aesthetics.

• Identify the target market and user needs

• Consider materials, manufacturing processes, and cost constraints

• Create sketches, CAD models, and prototypes for testing

• Iterate on designs based on feedback and testing results

The project involves developing a new mobile app for tracking fitness goals and progress.

• The app will have features for setting fitness goals, tracking workouts, and monitoring progress.

• Users can input their daily exercise routines and view statistics on their progress over time.

• The app will also include social features for sharing achievements and connecting with other users.

• Development will involve designing user-friendly interfaces, implementing data tracking algorithms, a...read more

Optimisation problems involve finding the best solution from a set of possible solutions.

• Identify the objective function to be maximised or minimised

• Define the constraints that must be satisfied

• Choose an appropriate optimisation algorithm such as genetic algorithms or simulated annealing

• Iteratively improve the solution until the optimal solution is found

GD&T (Geometric Dimensioning and Tolerancing) is a system for defining and communicating engineering tolerances.

• Provides a clear and concise way to specify the allowable variation in part geometry.

• Uses symbols to represent features like flatness, parallelism, and concentricity.

• Example: A flatness tolerance ensures a surface is within a specified distance from a perfect plane.

• Helps in improving manufacturing efficiency and quality control.

• Facilitates better communication betwe...read more

Angular life cycle hooks are methods that allow you to tap into specific points in a component's life cycle.

• ngOnChanges: called when an input property changes

• ngOnInit: called once the component is initialized

• ngOnDestroy: called before the component is destroyed

• ngAfterViewInit: called after the component's view has been fully initialized

The digest cycle in Angular is the process where Angular checks all the watchers in the scope for changes and updates the view accordingly.

• During the digest cycle, Angular compares the current value of the watchers with the previous value to detect changes.

• If a change is detected, Angular updates the view to reflect the changes.

• The digest cycle continues until all watchers have been checked and no more changes are detected.

• The digest cycle is triggered by various events like ...read more

Hardware in the loop (HIL) is a testing method that involves testing a component or system using a simulated environment with real hardware.

• HIL testing allows for testing of complex systems without the need for physical prototypes.

• It involves connecting the actual hardware components to a simulation environment to test their interactions.

• Examples include testing automotive control systems by connecting the ECU to a simulated vehicle environment.

• HIL testing helps identify issu...read more

Design project 1: Redesigning a website for a retail company. Design project 2: Creating a mobile app for a transportation company.

• Design project 1 involved improving the user experience and visual appeal of the website to increase customer engagement and sales.

• Design project 2 focused on developing a user-friendly mobile app with features like real-time tracking, booking, and payment options for seamless transportation services.

• Both projects required collaboration with stake...read more

GD&T symbols define geometric tolerances for parts, ensuring proper fit and function in engineering designs.

• Flatness: Ensures a surface is flat within a specified tolerance, e.g., a mounting surface for a component.

• Profile of a Line: Controls the contour of a line, useful in complex shapes like automotive body panels.

• Position: Specifies the exact location of features, critical for assembly, e.g., hole locations on a bracket.

• Symmetry: Ensures features are symmetrical about a c...read more

Permits are legal documents that allow individuals or businesses to engage in certain activities or projects.

• Building permits are required for construction or renovation projects

• Zoning permits regulate land use and development

• Business permits are needed to operate certain types of businesses

• Environmental permits are necessary for activities that may impact the environment

IS code refers to Indian Standard code used in structural engineering.

• IS 456:2000 - Code of practice for plain and reinforced concrete

• IS 800:2007 - General construction in steel

• IS 3370:1965 - Code of practice for concrete structures for storage of liquids

IC engine works by converting chemical energy into mechanical energy through combustion of fuel inside the engine cylinders.

• IC engine intake air and fuel mixture into the cylinder

• Compression of the air-fuel mixture increases its temperature and pressure

• Ignition of the compressed mixture by spark plug causes combustion

• Expansion of the gases pushes the piston down, creating mechanical energy

• Exhaust gases are expelled through the exhaust valve

Effective length is a measure used in structural engineering to determine the stability and strength of a member.

• Effective length is the distance between points of zero moment in a structural member.

• It is used to calculate the buckling capacity of columns and beams.

• The effective length factor depends on the end conditions of the member.

• For example, a simply supported beam has an effective length factor of 1, while a fixed-fixed beam has a factor of 0.5.

• Effective length is imp...read more