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Total: 100marks General Directions: Answer as Directed Q1. The peak I/P line voltage for 3 phase bridge rectifier...

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Electrical Engineering

Total: 100marks

General Directions: Answer as Directed

Q1. The peak I/P line voltage for 3phase bridge rectifier is 400V with a resistive load of 30 ohm.Calculate the followings;

  1. O/P rms voltage
  2. O/P load current
  3. The 6th and 12th harmonic order
  4. Draw the I/P and O/P waveforms for the circuit

Q2 A three phase full-wave controlled rectifier supply a highlyinductive load with R=10Ω. The supply is a 3-phase Y-connected with208v r.m.s.

Calculate:

  1. The load current when the Tyhyristors firing angle α=40⁰.
  2. The power drawn from the supply
  3. If the current value kept at (a) and α is changed to 135⁰,calculate the power returned to the supply

Answer & Explanation Solved by verified expert
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