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What is the maximum output voltage of 3-phase full bridge rectifier supplied with a line voltage of 420 V?
- a)532 V
- b)567 V
- c)498 V
- d)526 V
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
What is the maximum output voltage of 3-phase full bridge rectifier su...
To find the maximum output voltage of a 3-phase full bridge rectifier supplied with a line voltage of 420V, we need to consider the voltage drop across the diodes and the voltage phase shift caused by the rectification process.
The line voltage is given as 420V, which is the RMS (Root Mean Square) value of the voltage. To find the peak voltage, we can multiply the RMS value by √2.
Peak Voltage = RMS Voltage × √2
Peak Voltage = 420V × √2
Peak Voltage = 420V × 1.414
Peak Voltage ≈ 594.48V
However, this is the peak voltage before rectification. After rectification, there is a voltage drop across the diodes. In a full bridge rectifier, each diode will have a voltage drop of approximately 0.7V.
Voltage Drop across Diodes = 0.7V × 2
Voltage Drop across Diodes = 1.4V
To find the maximum output voltage, we subtract the voltage drop across the diodes from the peak voltage.
Maximum Output Voltage = Peak Voltage - Voltage Drop across Diodes
Maximum Output Voltage ≈ 594.48V - 1.4V
Maximum Output Voltage ≈ 593.08V
Therefore, the maximum output voltage of the 3-phase full bridge rectifier supplied with a line voltage of 420V is approximately 593.08V. None of the given options match this value.
The line voltage is given as 420V, which is the RMS (Root Mean Square) value of the voltage. To find the peak voltage, we can multiply the RMS value by √2.
Peak Voltage = RMS Voltage × √2
Peak Voltage = 420V × √2
Peak Voltage = 420V × 1.414
Peak Voltage ≈ 594.48V
However, this is the peak voltage before rectification. After rectification, there is a voltage drop across the diodes. In a full bridge rectifier, each diode will have a voltage drop of approximately 0.7V.
Voltage Drop across Diodes = 0.7V × 2
Voltage Drop across Diodes = 1.4V
To find the maximum output voltage, we subtract the voltage drop across the diodes from the peak voltage.
Maximum Output Voltage = Peak Voltage - Voltage Drop across Diodes
Maximum Output Voltage ≈ 594.48V - 1.4V
Maximum Output Voltage ≈ 593.08V
Therefore, the maximum output voltage of the 3-phase full bridge rectifier supplied with a line voltage of 420V is approximately 593.08V. None of the given options match this value.
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Community Answer
What is the maximum output voltage of 3-phase full bridge rectifier su...
Concept:
The average output voltage of a three-phase bridge rectifier is given by
Maximum possible output voltage
Calculation:
Given that, line voltage (VL) = 420 V
Maximum line voltage = 420 × √2 V
Maximum possible output voltage
Maximum possible output voltage
The average output voltage of a three-phase bridge rectifier is given by
Maximum possible output voltage
Calculation:
Given that, line voltage (VL) = 420 V
Maximum line voltage = 420 × √2 V
Maximum possible output voltage
Maximum possible output voltage
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