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Inverter Protection MCQs

Practice Inverter Protection MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1
Power ElectronicsInverter Protection

In a voltage-source inverter, shoot-through of one bridge leg means?

  • AThe upper and lower switches of the same leg conduct simultaneously
  • BAll switches remain OFF
  • COnly the load current becomes zero
  • DThe DC source is disconnected safely
Report an error
Correct Answer: A. The upper and lower switches of the same leg conduct simultaneously
Explanation: Simultaneous conduction of both devices in one leg creates a very low-impedance path across the DC link and can damage the switches.
Reference: Standard power electronics: inverter protection
Question 2
Power ElectronicsInverter Protection

Dead time in an inverter bridge is intentionally inserted mainly to prevent?

  • AShoot-through
  • BFundamental output voltage
  • CPWM operation
  • DLoad current flow in every interval
Report an error
Correct Answer: A. Shoot-through
Explanation: A short blanking interval between turning one switch OFF and its complementary switch ON prevents cross-conduction.
Reference: Standard power electronics: inverter protection