Junior Engineer Electronics Interview Questions and Answers

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 helpful information for assembly

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

Semiconductor is a material that has electrical conductivity between a conductor and an insulator.

• Semiconductors are used in electronic devices like transistors, diodes, and integrated circuits.

• Common types of semiconductors include silicon, germanium, and gallium arsenide.

• Semiconductors can be classified as intrinsic (pure) or extrinsic (doped with impurities).

PLC, Star, Delta, MCB, RCCB, SCADA, Relay, SMPS, HO, Amps are all related to electronics and electrical engineering.

• PLC stands for Programmable Logic Controller and is used for automation in industries.

• Star and Delta are two types of motor starters used in electrical engineering.

• MCB stands for Miniature Circuit Breaker and is used for protection against overcurrent.

• RCCB stands for Residual Current Circuit Breaker and is used for protection against earth leakage current.

• SCADA ...read more

Different data types in C include int, float, char, double, and void.

• int - used for integer values (e.g. int num = 10;)

• float - used for floating-point values (e.g. float num = 3.14;)

• char - used for single characters (e.g. char letter = 'A';)

• double - used for double-precision floating-point values (e.g. double num = 3.14159;)

• void - used to specify that a function does not return a value (e.g. void functionName();)

Safety in a company refers to the measures taken to ensure the well-being of employees and prevent accidents.

• Safety policies and procedures should be established and communicated clearly to all employees.

• Regular safety training should be provided to employees.

• Safety equipment and protective gear should be provided and maintained.

• Regular safety inspections should be conducted to identify and address potential hazards.

• Accidents and near-misses should be reported and investigate...read more

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 and improve the process continuously