Power Electronics Imp Qusts – PE Important Questions

Power Electronics Imp Qusts Pdf file – PE Important Questions

Please find the attached pdf file of Power Electronics Important Questions Bank – PE Imp Qusts

Link – PE Question Bank

UNIT -1
POWER SEMI CONDUCTOR DEVICES & COMMUTATION CIRCUITS

1. What are the differences between power diode and signal diode?
2. Define latching current & holding current of a SCR.
3. What is Snubber circuit? What is the function of Snubber circuit?

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UNIT – II
AC-DC CONVERTERS (1-PHASE & 3-PHASE CONTROLLED RECTIFIERS)

1. What is meant by phase controlled rectifier?
2. Mention some of the applications of controlled rectifier.
3. What is the function of freewheeling diodes in controlled rectifier?

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UNIT-III
DC-DC CONVERTERS (CHOPPERS)

1. What is meant by dc chopper?
2. What is meant by duty-cycle?
3. What is meant by Time Ratio Control? What are the two types of TRC?

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UNIT – IV
AC-AC CONVERTERS (AC VOLTAGE CONTROLLERS) & FREQUENCY CHANGERS (CYCLOCONVERTERS)

1. What does ac voltage controller mean?
2. What are the disadvantages of continuous gating signal?
3. What is meant by high frequency carrier gating?

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UNIT-V
DC-AC CONVERTERS (INVERTERS)

1. What is meant by inverter?
2. What are the main classifications of inverter?
3. Why thyristors are not preferred for inverters?

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