Embedded Hardware Engineer

Embedded Hardware Engineer Interview Questions and Answers

Updated 3 Feb 2025
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Q1. If it is a discrete output by a sensor y did you use a adc

Ans.

An ADC is used to convert analog signals from a sensor into digital signals for processing and analysis.

  • An ADC (Analog-to-Digital Converter) is used to convert the continuous analog output from a sensor into discrete digital values.

  • This conversion allows the digital values to be processed and analyzed by a microcontroller or other digital systems.

  • Using an ADC ensures accurate and precise measurement of the sensor output.

  • ADCs are commonly used in embedded systems to interface ...read more

Q2. What all technical documents you are aware of

Ans.

Technical documents commonly used by embedded hardware engineers

  • Datasheets: Provide detailed specifications of electronic components

  • Schematics: Diagrams showing the circuit connections and components

  • PCB Layouts: Designs for printed circuit boards

  • Bill of Materials (BOM): List of components required for a project

  • Application Notes: Guides and examples for using specific components

  • User Manuals: Instructions for operating and troubleshooting hardware

  • Design Guides: Recommendations ...read more

Embedded Hardware Engineer Interview Questions and Answers for Freshers

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Q3. What is the process for pcb design from start to end ?

Ans.

The process for PCB design involves schematic design, component selection, layout design, routing, prototyping, testing, and production.

  • Create a schematic diagram outlining the components and connections.

  • Select appropriate components based on requirements and availability.

  • Design the layout of the PCB considering factors like size, heat dissipation, and signal integrity.

  • Route the traces to connect the components following design rules and constraints.

  • Prototype the PCB to test ...read more

Q4. What is a flow chart of designing

Ans.

A flow chart is a visual representation of the steps involved in designing a system or process.

  • Identify the problem or need that the design will address

  • Break down the design into smaller components or tasks

  • Define the inputs, outputs, and processes involved in each step

  • Connect the components in a logical sequence to show the flow of information or actions

  • Review and refine the flow chart to ensure all steps are accounted for and in the correct order

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Q5. Design circuit for microcontroller on and off ?

Ans.

To design a circuit for turning a microcontroller on and off, you can use a power switch connected to the microcontroller's power input.

  • Use a power switch to control the flow of power to the microcontroller.

  • Connect the power switch to the microcontroller's power input.

  • Ensure the power switch can handle the voltage and current requirements of the microcontroller.

  • Consider adding a reset button for restarting the microcontroller.

  • Include proper decoupling capacitors for stable po...read more

Q6. Value of resistor in series

Ans.

The value of a resistor in series is determined by its resistance in ohms.

  • The value of a resistor in series is measured in ohms.

  • Resistors in series add up their resistance values.

  • The total resistance of resistors in series can be calculated using the formula: R_total = R1 + R2 + R3 + ...

  • For example, if you have a 10 ohm resistor and a 20 ohm resistor in series, the total resistance would be 30 ohms.

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