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The average value of the output voltage, in a 3-phase half wave diode rectifier with Vml as the maximum line voltage value, is given by the expression
  • a)
    Vml/3π
  • b)
    2Vml/3π
  • c)
    3Vml/2π
  • d)
    3Vml
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The average value of the output voltage, in a 3-phase half wave diode ...
The average value can be obtained by
3 x [ 1/2π x Vml sin ωt d(ωt) ] The integration runs from π/6 to 5π/6 as the diode is conducting for 120 degrees each.
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Most Upvoted Answer
The average value of the output voltage, in a 3-phase half wave diode ...
The average value of the output voltage in a 3-phase half wave diode rectifier can be calculated by considering the voltage waveform during each phase.

During each phase, the diode conducts only during the positive half-cycle of the input voltage. Therefore, the output voltage will be the same as the input voltage during this half-cycle.

Since there are three phases, each contributing to the output voltage for one-third of the time, the average value of the output voltage can be calculated as:

Average output voltage = (1/3) * Vml

So, the correct expression is:
a) Vml/3
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