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The different types of layers in PCBs are signal layer, power plane layer, ground plane layer, and silkscreen layer.
Signal layer: Carries electrical signals between components
Power plane layer: Provides power distribution throughout the board
Ground plane layer: Provides a reference point for electrical signals and helps with noise reduction
Silkscreen layer: Contains component outlines, reference designators, and other
Various components like resistors, capacitors, transistors, and diodes are used in circuits to control the flow of electricity.
Resistors: Limit current flow, control voltage levels
Capacitors: Store and release electrical energy
Transistors: Amplify or switch electronic signals
Diodes: Allow current to flow in one direction only
5s system is a methodology for organizing a workplace to improve efficiency and effectiveness by eliminating waste and maintaining cleanliness.
Sort - separate needed tools, materials, and instructions from unneeded items
Set in order - neatly arrange items for easy access and use
Shine - clean and inspect work area regularly
Standardize - establish procedures and schedules for maintaining the first 3 S's
Sustain - maintain
High voltage PCBs can be checked using insulation resistance testing, visual inspection, and continuity testing.
Perform insulation resistance testing using a megohmmeter to check for any leakage current or breakdown voltage issues.
Conduct visual inspection for any physical damage, burnt components, or signs of arcing.
Use continuity testing to ensure proper connections and no open circuits on the PCB.
Check for any abnor...
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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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