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Questions and Answers
What is the back-to-back test also known as?
What is the back-to-back test also known as?
- Parallel test
- Sumpner’s test (correct)
- Full-load test
- Regenerative test
Why is conducting a full-load test difficult for large transformers?
Why is conducting a full-load test difficult for large transformers?
- Suitable load may not be available
- It is expensive due to energy wastage
- Both A and B (correct)
- None of the above
How are the primary windings of transformers T1 and T2 connected in the back-to-back test?
How are the primary windings of transformers T1 and T2 connected in the back-to-back test?
- In parallel and series
- In reverse
- In parallel (correct)
- In series
What instruments are used in the back-to-back test?
What instruments are used in the back-to-back test?
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What is the purpose of the back-to-back test?
What is the purpose of the back-to-back test?
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Study Notes
Back-to-Back Test
- The back-to-back test is also known as the Sverker Odeen's test.
- Conducting a full-load test for large transformers is difficult due to the requirement of a large load bank, which is often not feasible.
- In the back-to-back test, the primary windings of transformers T1 and T2 are connected in parallel.
- The instruments used in the back-to-back test include two wattmeters, one connected to each transformer, and a switch or a synchronizing device.
- The purpose of the back-to-back test is to measure the losses and performance of a transformer at full load without actually loading it.
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