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I applied via Referral and was interviewed before May 2022. There were 2 interview rounds.
Transformers are sized based on load requirements and voltage levels.
Determine the load requirements of the system
Calculate the required kVA rating based on the load requirements
Determine the voltage levels of the system
Select a transformer with a kVA rating and voltage levels that meet the requirements
Consider factors such as efficiency, temperature rise, and impedance when selecting a transformer
DG sizing depends on load demand, backup requirements, fuel availability, and budget.
Calculate the total load demand of the system
Determine the backup requirements and duration
Consider the availability of fuel and its cost
Evaluate the budget for the project
Select a DG with appropriate capacity and efficiency
Perform a feasibility study and cost-benefit analysis
Consider environmental regulations and noise restrictions
Ens
IEC codes and standards are international standards for electrical engineering.
IEC stands for International Electrotechnical Commission
IEC codes and standards ensure safety, reliability, and compatibility of electrical systems and equipment
Examples of IEC standards include IEC 60601 for medical electrical equipment and IEC 61850 for communication networks and systems in substations
Voltage drop is the reduction in voltage that occurs as electricity flows through a circuit due to resistance.
Calculate the total resistance of the circuit
Determine the current flowing through the circuit
Multiply the current by the total resistance to get the voltage drop
Use Ohm's Law (V=IR) to calculate voltage drop across individual components
Consider using voltage drop calculators or tables for more complex circuits
Choose cable based on voltage, current, temperature, environment and application.
Determine voltage and current requirements
Consider temperature range and environmental conditions
Choose cable type based on application (e.g. power, data, signal)
Select appropriate conductor material (e.g. copper, aluminum)
Check for any regulatory requirements or standards (e.g. NEC, UL)
Examples: THHN for indoor power, Cat6 for data transm
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Starters are used to control the starting current of motors.
Starters are used to limit the inrush current during motor starting.
They protect the motor from damage due to high starting current.
Types of starters include direct-on-line, star-delta, and soft starters.
Starters are commonly used in industrial and commercial applications.
Examples of applications include pumps, fans, and conveyor belts.
Breakers are electrical switches that protect circuits from overloading and short circuits.
Circuit Breaker - protects circuits from overloading and short circuits
Ground Fault Circuit Interrupter (GFCI) - protects against electrical shock in wet areas
Arc Fault Circuit Interrupter (AFCI) - protects against electrical fires caused by arcing
Main Breaker - controls power to the entire electrical panel
Miniature Circuit Break...
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I applied via Naukri.com and was interviewed before Jul 2020. There was 1 interview round.
Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.
Name mangling is used in C++ to support function overloading.
It is also used in Python to avoid naming conflicts in modules.
Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.
In C++, name mangling can be seen by using the 'nm' comman
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
posted on 10 Sep 2017
I was interviewed before Sep 2016.
posted on 10 Sep 2015
I applied via PLACEMENT
posted on 12 May 2018
posted on 14 Jul 2021
Abstract Factory is a creational design pattern that provides an interface for creating families of related objects.
Abstract Factory is used when we need to create families of related objects without specifying their concrete classes.
It provides an interface for creating objects of related classes without specifying their concrete classes.
It encapsulates a group of factories that have a common theme.
It promotes loose c...
Range based map iteration can be done using a for-each loop or iterators.
Use a for-each loop to iterate over the map elements.
Alternatively, use iterators to traverse the map.
The range-based for loop is preferred for its simplicity and readability.
Example: for(auto const& [key, value] : myMap) { //do something with key and value }
Detached threads are independent threads that run separately from the main thread. Joined threads are threads that wait for the main thread to finish.
Detached threads are created using pthread_detach() function
Joined threads are created using pthread_join() function
Detached threads do not need to be explicitly terminated
Joined threads must be explicitly terminated using pthread_exit() or return statement
Detached thread...
Static code analysis tools are software programs that analyze source code to find potential issues and improve code quality.
Static code analysis tools scan code without executing it
They can detect issues such as security vulnerabilities, coding errors, and performance problems
Examples of static code analysis tools include SonarQube, ESLint, and Checkstyle
Command to list currently running threads in linux
Use the 'ps' command with the 'H' option to display threads in a hierarchy
Use the 'top' command to display threads in real-time
Use the 'htop' command for an interactive display of threads
No, arithmetic operations cannot be performed on unique pointers.
Unique pointers are used to manage the lifetime of dynamically allocated objects.
They cannot be copied or assigned, only moved.
Arithmetic operations are not defined for pointers, including unique pointers.
Designing Facebook is a complex task involving various components and technologies.
Identify the core features of Facebook such as user profiles, news feed, messaging, and groups.
Choose appropriate technologies for each component such as PHP for backend, React for frontend, and MySQL for database.
Ensure scalability and performance by implementing caching, load balancing, and database sharding.
Implement security measures...
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