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  • Question
  • Half bridge and full bridge inverters of one type use different commutation methods.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 


  • Power Electronics problems


    Search Results


    • 1. In rectifier circuits, the rms value of ac component of output voltage is equal to

    • Options
    • A. Vrms
    • B. 0.5 Vrms
    • C. (Vrms - Vdc)0.5
    • D. (Vrms2 - Vdc2)0.5
    • Discuss
    • 2. If 0.5 T is the time period of oscillations and Toff is the time between turn off of one thyristor and turn on of second thyristor, the frequency of output f of a series inverter is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 3. Mc Murray full bridge inverter uses

    • Options
    • A. 4 thyristors and 2 diodes
    • B. 4 thyristors and 4 diodes
    • C. 8 thyristors and 4 diodes
    • D. 8 thyristors and 8 diodes
    • Discuss
    • 4. Which of these devices can conduct in both directions?

    • Options
    • A. SCR
    • B. SUS
    • C. SBS
    • D. UJT
    • Discuss
    • 5. The efficiency of a chopper circuit is about

    • Options
    • A. 80% or more
    • B. around 50%
    • C. around 20%
    • D. around 5%
    • Discuss
    • 6. In a three phase to single phase full wave bridge cycloconverter, the number of thyristors is

    • Options
    • A. 36
    • B. 18
    • C. 12
    • D. 8
    • Discuss
    • 7. Two thyristors of the same rating and specifications

    • Options
    • A. will have equal on state voltage drops
    • B. will have equal forward blocking voltage for the same current
    • C. will have different on state voltage drops
    • D. may have equal or different on state voltage drops and equal or different forward blocking voltage's for the same current
    • Discuss
    • 8. In rectifier circuits, ripple factor RF and form factor FF are related as

    • Options
    • A. RF = (FF2 - 1)0.5
    • B. RF = FF
    • C. RF = FF - 1
    • D. RF = (FF - 1)0.5
    • Discuss
    • 9. A chopper is a high efficiency circuit.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. In auxiliary commutated chopper fed by voltage V and having L and C commutating elements, the peak value of capacitor current is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss


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