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If the percentage impedances of the two transformers working in parallel are different, then
- a)transformers will be overheated
- b)power factors of both the transformers will be same
- c)parallel operation will be not possible
- d)parallel operation will still be possible, but the power factors at which the two transformers operate will be different from the power factor of the common load
Correct answer is option 'D'. Can you explain this answer?
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If the percentage impedances of the two transformers working in parall...
Explanation:
When two transformers are connected in parallel, their voltages and frequencies must match in order to ensure proper operation. However, the percentage impedance of the transformers can be different.
Impedance:
The impedance of a transformer is a measure of its ability to oppose the flow of current. It is represented as a percentage of the rated voltage. A higher percentage impedance indicates a higher voltage drop and a lower current flow.
Parallel Operation:
When transformers are connected in parallel, they share the load. The total load is divided between the transformers based on their respective impedance values. Transformers with lower impedance will carry a larger share of the load.
Effect of Different Percentage Impedances:
If the percentage impedances of the two transformers are different, the parallel operation is still possible, but the power factors at which the transformers operate will be different from the power factor of the common load.
- Power Factor: The power factor is a measure of how effectively a load converts electrical power into useful work. It is the cosine of the angle between the voltage and current waveforms.
- Power Factor Correction: Transformers with different impedance values will have different power factors. To achieve power factor correction, the transformers with higher impedance will operate at a leading power factor, while the transformer with lower impedance will operate at a lagging power factor.
- Operational Differences: The transformers will still be able to operate in parallel, but they will not share the load equally. The transformer with lower impedance will carry a larger share of the load and operate at a lagging power factor. The transformer with higher impedance will carry a smaller share of the load and operate at a leading power factor.
Conclusion:
In summary, if the percentage impedances of the two transformers working in parallel are different, parallel operation will still be possible. However, the power factors at which the transformers operate will be different from the power factor of the common load.
When two transformers are connected in parallel, their voltages and frequencies must match in order to ensure proper operation. However, the percentage impedance of the transformers can be different.
Impedance:
The impedance of a transformer is a measure of its ability to oppose the flow of current. It is represented as a percentage of the rated voltage. A higher percentage impedance indicates a higher voltage drop and a lower current flow.
Parallel Operation:
When transformers are connected in parallel, they share the load. The total load is divided between the transformers based on their respective impedance values. Transformers with lower impedance will carry a larger share of the load.
Effect of Different Percentage Impedances:
If the percentage impedances of the two transformers are different, the parallel operation is still possible, but the power factors at which the transformers operate will be different from the power factor of the common load.
- Power Factor: The power factor is a measure of how effectively a load converts electrical power into useful work. It is the cosine of the angle between the voltage and current waveforms.
- Power Factor Correction: Transformers with different impedance values will have different power factors. To achieve power factor correction, the transformers with higher impedance will operate at a leading power factor, while the transformer with lower impedance will operate at a lagging power factor.
- Operational Differences: The transformers will still be able to operate in parallel, but they will not share the load equally. The transformer with lower impedance will carry a larger share of the load and operate at a lagging power factor. The transformer with higher impedance will carry a smaller share of the load and operate at a leading power factor.
Conclusion:
In summary, if the percentage impedances of the two transformers working in parallel are different, parallel operation will still be possible. However, the power factors at which the transformers operate will be different from the power factor of the common load.
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If the percentage impedances of the two transformers working in parallel are different, thena)transformers will be overheatedb)power factors of both the transformers will be samec)parallel operation will be not possibled)parallel operation will still be possible, but the power factors at which the two transformers operate will be different from the power factor of the common loadCorrect answer is option 'D'. Can you explain this answer?
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