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Aptitiude, Reasoning , EEE basic Questions
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of two coils of wire, known as primary and secondary coils
Primary coil receives electrical energy and creates a magnetic field
Magnetic field induces a voltage in the secondary coil, transferring energy
Used in power distribution, voltage regulation, and electrical isolation
Exampl...
Mutual induction is the process where a changing current in one coil induces a voltage in another coil.
Mutual induction occurs when two coils are placed close to each other and the magnetic field produced by one coil induces a voltage in the other coil.
The induced voltage in the second coil is directly proportional to the rate of change of current in the first coil.
This phenomenon is the basis for the operation of tran...
Flux is the flow of electric or magnetic field lines through a surface, while current is the flow of electric charge.
Flux is a measure of the flow of a physical property through a given area.
In electromagnetism, flux refers to the flow of electric or magnetic field lines through a surface.
Current is the flow of electric charge through a conductor.
Flux and current are related through Faraday's law of electromagnetic ind
I applied via Company Website and was interviewed before Jun 2022. There were 3 interview rounds.
DTR stands for Dead Time Recovery. It is a structure used in the oil and gas industry to separate gas and liquid phases.
DTR is typically made of steel or other corrosion-resistant materials.
The structure is designed to handle high pressure and temperature conditions.
Common materials used in the construction of DTR include carbon steel, stainless steel, and duplex stainless steel.
The choice of material depends on factor...
A Bucoz relay is a type of protective relay used in power systems to detect faults and isolate them to prevent damage.
Bucoz relay is a type of protective relay used in power systems.
It functions by detecting faults in the system and isolating them to prevent damage.
It helps in maintaining the stability and reliability of the power system.
Bucoz relay operates based on the principle of electromagnetic induction.
Examples ...
Pipe earthing of DTR involves using a metal pipe buried in the ground to provide a low-resistance path for fault currents.
Metal pipe is buried vertically in the ground near the DTR
The pipe is filled with alternate layers of charcoal and salt to improve conductivity
A copper wire is connected to the pipe and then to the DTR for grounding purposes
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I applied via Walk-in and was interviewed before Nov 2019. There were 3 interview rounds.
Overhauling procedure of turbine and generator involves disassembly, inspection, repair, and reassembly.
Disassemble turbine and generator components
Inspect components for wear and damage
Repair or replace damaged components
Reassemble components and test for proper function
7QC tools are a set of quality control tools used to identify and solve quality problems in manufacturing processes.
7QC tools include Pareto chart, cause-and-effect diagram, control chart, histogram, scatter diagram, flowchart, and check sheet.
They help in identifying and analyzing quality problems, determining root causes, and implementing corrective actions.
They are used to improve product quality, reduce defects, an...
PPAP and APQP are quality management systems used in manufacturing.
PPAP stands for Production Part Approval Process and is used to ensure that manufactured parts meet customer requirements.
APQP stands for Advanced Product Quality Planning and is used to plan and manage the design and development of new products.
Both systems are commonly used in the automotive industry but can be applied to other manufacturing industrie...
Pareto is a principle that states 80% of effects come from 20% of causes.
Also known as the 80/20 rule
Used in business to identify the most important factors
Can be applied to various fields such as economics, engineering, and social sciences
Example: 80% of a company's profits come from 20% of its customers
OEE can be calculated by multiplying Availability, Performance, and Quality percentages.
Calculate Availability by dividing Operating Time by Planned Production Time.
Calculate Performance by dividing Actual Production by Maximum Production.
Calculate Quality by dividing Good Units by Total Units Produced.
Multiply Availability, Performance, and Quality percentages to get OEE.
I applied via Referral and was interviewed in Nov 2020. There were 3 interview rounds.
posted on 8 Nov 2021
I applied via Naukri.com and was interviewed before Dec 2020. There was 1 interview round.
The value of 1/infinity is 0.
The value of 1/infinity is considered to be zero.
In mathematics, infinity is not a number but a concept representing an unbounded quantity.
When we divide any finite number by infinity, the result tends to zero.
For example, 1/∞ = 0, 10/∞ = 0, -5/∞ = 0.
Glass is a solid material that is transparent, brittle, and has no definite shape or volume.
Glass is made by melting silica, soda ash, and lime together at high temperatures.
It is a good insulator and can be used for windows, lenses, and mirrors.
Glass can be colored or clear, and can be shaped into various forms.
It is fragile and can break easily, but can also be tempered to increase its strength.
Glass is non-porous an...
I applied via Naukri.com and was interviewed before May 2023. There were 3 interview rounds.
Lifecycle methods are methods that are automatically called at certain points in the lifecycle of a component in React.
Lifecycle methods include componentDidMount, componentDidUpdate, componentWillUnmount, etc.
These methods allow developers to perform actions at specific points in a component's lifecycle, such as fetching data after the component has been rendered.
They are used to manage side effects, perform cleanup, ...
React is a popular JavaScript library for building user interfaces.
Component-based architecture for reusability and easy maintenance
Virtual DOM for efficient updates and performance optimization
JSX syntax for writing HTML within JavaScript
One-way data binding for predictable data flow
Support for server-side rendering for improved SEO
Large community and ecosystem with many third-party libraries and tools
Class components are ES6 classes that extend from React.Component and have state and lifecycle methods, while functional components are simple functions that take props as input and return JSX.
Class components are defined using ES6 classes and have a render method.
Functional components are defined as simple functions that take props as input and return JSX.
Class components can have state and lifecycle methods like comp...
Higher order components are functions that take a component and return a new component with additional functionality.
Higher order components enhance the functionality of existing components
They can be used for code reusability and separation of concerns
Examples include withRouter from React Router and connect from React Redux
React hooks are functions that let you use state and other React features without writing a class.
React hooks were introduced in React 16.8.
They allow you to use state and other React features in functional components.
Some commonly used hooks are useState, useEffect, useContext, and useReducer.
Hooks are more flexible and easier to use compared to class components.
ContextAPI is a built-in feature in React for managing global state, while Redux is a separate library for state management in React applications.
ContextAPI is built into React, while Redux is a separate library.
ContextAPI is primarily used for managing global state in a React application.
Redux provides a centralized store for state management and follows a unidirectional data flow.
ContextAPI is simpler to use for smal...
Semantic elements in HTML are tags that clearly define the content they wrap, providing meaning to both browsers and developers.
Semantic elements help improve SEO by providing search engines with better understanding of the content.
Examples of semantic elements include <header>, <footer>, <article>, <section>, <nav>, <aside>, <main>, <figure>, <figcaption>, <deta...
Pseudo elements are used in CSS to style specific parts of an element.
Pseudo elements are denoted by double colons (::) in CSS.
They allow styling of specific parts of an element, like the first letter or line.
Common pseudo elements include ::before, ::after, ::first-line, and ::first-letter.
The box model is a fundamental concept in CSS that defines the layout of elements on a webpage.
The box model consists of content, padding, border, and margin.
Content: the actual content of the element, such as text or images.
Padding: space between the content and the border.
Border: a line that goes around the padding and content.
Margin: space outside the border, separating the element from other elements.
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during the compilation phase.
Variable and function declarations are hoisted to the top of their scope.
Only declarations are hoisted, not initializations.
Function declarations take precedence over variable declarations.
Example: console.log(myVar); var myVar = 10; // Output: undefined
Example: cons...
Normal functions are defined using the function keyword, while arrow functions are defined using the => syntax.
Normal functions are hoisted, while arrow functions are not hoisted.
Arrow functions do not have their own 'this' keyword, they inherit it from the parent scope.
Arrow functions do not have their own 'arguments' object.
Arrow functions are more concise and have implicit return.
Arrow functions cannot be used as co
Splice and slice are methods used in programming to manipulate arrays.
Splice is used to add or remove elements from an array at a specific index.
Slice is used to extract a portion of an array and returns a new array.
Example of splice: array.splice(2, 0, 'new element') - adds 'new element' at index 2.
Example of slice: array.slice(1, 4) - extracts elements from index 1 to 3.
Coding questions on Java script like array methods and objects handling. coding questions on React is like life cycle methods using functional components and state management.
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Senior Engineer
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