✅ Power Electronics & Circuits 1. What is a MOSFET? 2. What is the difference between Buck, Boost, and Buck-Boost converters? 3. How to reduce 5V to 3.3V in a PCB circuit? 4. What increases noise in a sensor? 5. How to reduce noise in sensor readings? --- ✅ Basic Electronics 6. If Vin is 12V and R1 = R2, what is the voltage divider output (Vout)? 7. What is the power dissipated when current is 2A and resistance is 100Ω? 8. Find the reactance when capacitance is 10nF and frequency is 100kHz. --- ✅ Microcontroller & Embedded 9. How to read ADC value from a microcontroller? --- ✅ Communication Protocols 10. What is UART? 11. What is I2C? 12. What is SPI?