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A single phase semiconverter is feeding a highly inductive load and has a freewheeling diode across the load. The waveshape of input current is
- a)sinusoidal
- b)rectangular
- c)sinusoidal or rectangular
- d)triangular
Correct answer is option 'B'. Can you explain this answer?
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A single phase semiconverter is feeding a highly inductive load and ha...
Explanation:
A single phase semiconverter is a device that converts AC power to DC power. It consists of thyristors, which are unidirectional in nature, and it controls the flow of current from the AC source to the DC load. In this circuit, the load is highly inductive, and a freewheeling diode is also used to protect the circuit from voltage spikes.
The waveshape of input current is determined by the nature of the load and its characteristics. In this case, the load is highly inductive, which means that the current wave will be lagging behind the voltage wave. This leads to a phase shift between the two waves, resulting in a rectangular wave.
The input voltage is sinusoidal, but due to the inductive nature of the load, the current wave will be delayed and will have a rectangular shape. The current waveform will have a flat top and a sharp fall, which is the characteristic of a rectangular wave.
The freewheeling diode is used to protect the circuit from voltage spikes that occur during the off period of the thyristor. The diode allows the current to flow through it when the thyristor is off, and it prevents any voltage spikes that may damage the circuit.
Conclusion:
In conclusion, the waveshape of the input current in a single phase semiconverter feeding a highly inductive load and having a freewheeling diode across the load is rectangular. This is due to the inductive nature of the load, which causes the current wave to lag behind the voltage wave, resulting in a phase shift and a rectangular waveform. The freewheeling diode is used to protect the circuit from voltage spikes that may occur during the thyristor off period.
A single phase semiconverter is a device that converts AC power to DC power. It consists of thyristors, which are unidirectional in nature, and it controls the flow of current from the AC source to the DC load. In this circuit, the load is highly inductive, and a freewheeling diode is also used to protect the circuit from voltage spikes.
The waveshape of input current is determined by the nature of the load and its characteristics. In this case, the load is highly inductive, which means that the current wave will be lagging behind the voltage wave. This leads to a phase shift between the two waves, resulting in a rectangular wave.
The input voltage is sinusoidal, but due to the inductive nature of the load, the current wave will be delayed and will have a rectangular shape. The current waveform will have a flat top and a sharp fall, which is the characteristic of a rectangular wave.
The freewheeling diode is used to protect the circuit from voltage spikes that occur during the off period of the thyristor. The diode allows the current to flow through it when the thyristor is off, and it prevents any voltage spikes that may damage the circuit.
Conclusion:
In conclusion, the waveshape of the input current in a single phase semiconverter feeding a highly inductive load and having a freewheeling diode across the load is rectangular. This is due to the inductive nature of the load, which causes the current wave to lag behind the voltage wave, resulting in a phase shift and a rectangular waveform. The freewheeling diode is used to protect the circuit from voltage spikes that may occur during the thyristor off period.
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A single phase semiconverter is feeding a highly inductive load and has a freewheeling diode across the load. The waveshape of input current isa)sinusoidalb)rectangularc)sinusoidal or rectangulard)triangularCorrect answer is option 'B'. Can you explain this answer?
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