Electrical Engineer Intern

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Electrical Engineer Intern Interview Questions and Answers

Updated 8 Jun 2024

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Q1. Which one is self starting 3 phase or single phase motor

Ans.

Single phase motors are self-starting while 3 phase motors require external starting devices.

  • Single phase motors have a starting winding that creates a rotating magnetic field to start the motor

  • 3 phase motors require external starting devices like a motor starter or VFD to create the rotating magnetic field

  • Single phase motors are commonly used in household appliances while 3 phase motors are used in industrial applications

Q2. Design an interruptible power supply for a booster

Ans.

Design an interruptible power supply for a booster

  • Determine power requirements of the booster

  • Select appropriate battery capacity and type

  • Design circuit with automatic switch-over to battery power during power outage

  • Include surge protection and voltage regulation

  • Test the system for reliability and efficiency

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