Sl Lumax Design Engineer Interview Questions, Process, and Tips

Q1. What is stress and strain
Ans. 
Stress is the force applied to a material, while strain is the resulting deformation or change in shape.
• Stress is the force applied to a material per unit area

• Strain is the measure of deformation or change in shape of a material

• Stress is typically measured in units of force per unit area (such as N/m^2 or Pa)

• Strain is a dimensionless quantity, often expressed as a percentage or in millimeters per meter

• The relationship ...read more
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Q1. Which company working your husband
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General Question, Technical question

Q1. Hiring for trainee but they ask question as project manager role even though they also don't know answer
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Q2. What is MOSFET & working
Ans. 
MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor. It is a type of transistor used for amplifying or switching electronic signals.
• MOSFET is a type of transistor that is commonly used in electronic devices.

• It consists of three terminals: gate, source, and drain.

• The flow of current between the source and drain terminals is controlled by the voltage applied to the gate terminal.

• MOSFETs are used in amplif...read more
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Q3. Explain about Allegro tool
Ans. 
Allegro is a PCB design tool used for designing printed circuit boards.
• Allegro is developed by Cadence Design Systems.

• It offers features for schematic capture, layout, and routing of PCBs.

• Allegro is widely used in the electronics industry for designing complex PCBs.

• It allows for collaboration among team members working on the same project.
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Q4. What is differential pair explain briefly
Ans. 
A pair of traces on a PCB that carry complementary signals to reduce electromagnetic interference and improve signal integrity.
• Differential pairs are used in high-speed digital circuits to transmit data with minimal noise and interference.

• The two traces in a differential pair carry equal and opposite signals, which allows the receiver to detect the difference between the two signals.

• The signals in a differential pair h...read more
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Q5. What is SCU ECU ACU in EV
Ans. 
SCU, ECU, and ACU are electronic control units in electric vehicles responsible for different functions.
• SCU (System Control Unit) manages overall system operation and communication between components.

• ECU (Electronic Control Unit) controls specific functions like motor control, battery management, and charging.

• ACU (Auxiliary Control Unit) handles auxiliary systems like HVAC, power steering, and lighting.

• These units work...read more
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