GIPCL Machine Vision Engineer Interview Questions and Answers

Q1. Basic and general attitude based questions
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Online Aptitude test with GK, quant and domain knowledge

Q1. Explain how transformer functions
Ans. 
A transformer functions by transferring electrical energy between two or more circuits through electromagnetic induction.
• Transformers consist of two coils of wire, known as the primary and secondary coils.

• When an alternating current flows through the primary coil, it creates a changing magnetic field.

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy between the two cir...read more
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Q2. Why core company?
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Q1. Common way of demolition
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Common way of demolition is through controlled implosion.
• Controlled implosion is a method where explosives are strategically placed to bring down a structure in a controlled manner.

• Another common method is mechanical demolition using equipment like wrecking balls, excavators, or bulldozers.

• Selective demolition involves dismantling specific parts of a structure while leaving the rest intact.

• Deconstruction is a sustainab...read more
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Q2. Vibration time of concrete
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Vibration time of concrete is the duration for which concrete is vibrated to remove air bubbles and ensure proper compaction.
• Vibration time varies based on factors like mix design, slump, size of pour, and type of vibrator used.

• Typically, vibration time ranges from 10-30 seconds per foot of concrete thickness.

• Over-vibration can lead to segregation of aggregates, while under-vibration can result in honeycombing.

• Proper v...read more
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Q1. What is node js?
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Node.js is a runtime environment that allows you to run JavaScript code outside of a web browser.
• Node.js is built on Chrome's V8 JavaScript engine.

• It uses an event-driven, non-blocking I/O model.

• Node.js is commonly used for building server-side applications.

• It has a large ecosystem of open-source libraries and frameworks like Express.js.
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Q2. What is event loop?
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Event loop is a mechanism that allows a program to efficiently handle multiple events or tasks concurrently.
• Event loop is commonly used in asynchronous programming to manage tasks that may take varying amounts of time to complete.

• It continuously checks for events or tasks in a queue and executes them one by one.

• Event loop helps prevent blocking of the main thread by allowing non-blocking execution of tasks.

• Popular exam...read more
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Q3. Difference between callback and promise?
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Callback is a function passed as an argument to another function to be executed later, while a promise is an object representing the eventual completion or failure of an asynchronous operation.
• Callback is used in traditional asynchronous programming, while promises are used in modern asynchronous programming.

• Callbacks can lead to callback hell or pyramid of doom, while promises provide better readability and error hand...read more
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Q4. What is middlewares in node js?
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Middlewares in Node.js are functions that have access to the request and response objects, and can modify or terminate the request-response cycle.
• Middlewares are functions that are executed in the middle of the request-response cycle.

• They can perform tasks like parsing request data, logging, authentication, etc.

• Middlewares can be added using app.use() method in Express framework.

• Example: app.use(bodyParser.json()) to p...read more
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Q5. What is event emitter?
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Event emitter is a pattern used to handle and respond to events in software development.
• Event emitter is a design pattern commonly used in Node.js for handling events.

• It allows objects to subscribe to events and be notified when those events occur.

• Event emitter is often used for asynchronous programming and decoupling components.

• Example: EventEmitter class in Node.js can be used to create custom events and handle them.
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Q1. Knowledge for technical interview
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Q2. Company responsibility and role
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A company's responsibility includes ethical practices, innovation, and community engagement, while roles define individual contributions.
• Ethical Practices: Companies must adhere to laws and regulations, ensuring fair treatment of employees and customers. Example: Implementing fair labor practices.

• Innovation: Companies are responsible for fostering innovation to stay competitive. Example: Investing in R&D for new pr...read more
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Q3. Company current location and post
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Q1. Asked about career
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Q2. Briefed personal,education and professional experience
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