Electrical Engineering: Power Electronics Quiz

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Questions and Answers

What happens to the inductor when the switch is closed in a boost converter?

  • It stores energy (correct)
  • It releases energy to the output
  • It is short-circuited
  • It is disconnected from the circuit

What is the purpose of the capacitor in the On-state of a buck-boost converter?

  • To accumulate energy from the input voltage source
  • To supply energy to the output load (correct)
  • To regulate the output voltage
  • To filter out high-frequency noise

What is the minimum inductor value 𝐿𝑚𝑖n in a boost converter?

  • C / (2f 𝑅 (1 - 𝐷))
  • D(1 - 𝐷)^2 / (2f 𝑅 𝐷)
  • C / (2f 𝑅 𝐷)
  • D(1 - 𝐷)^2 / (2f 𝑅 𝐷 RCf) (correct)

What is the output voltage ripple in a buck converter?

<p>1 - 𝐷 / (8LCf^2) (C)</p> Signup and view all the answers

What is the main application of an inverter in a HVDC system?

<p>To convert DC to AC (D)</p> Signup and view all the answers

What is the formula to calculate the output voltage 𝑉𝑜 in a buck converter?

<p>𝐷𝑉𝑠 (D)</p> Signup and view all the answers

What is the function of an uninterruptible power supply (UPS) system?

<p>To provide a backup power source during outages (A)</p> Signup and view all the answers

What happens to the inductor when the switch is opened in a boost converter?

<p>It releases energy to the output (C)</p> Signup and view all the answers

What is the minimum inductor value 𝐿𝑚𝑖n in a buck-boost converter?

<p>(1 - 𝐷)^2 / (2f 𝑅 𝐷 RCf) (A)</p> Signup and view all the answers

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