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TRANSFORMERS QUIZ

Cores of large transformers are built upto nearly circular cross section in order to reduce

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Which of the following protection is normally not provided on small distribution transformers?

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Transformer having ratings less than 5kVA are generally ______

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The path of the magnetic flux in transformer should have

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When load on a transformer is decreased, ______loss is decreased

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A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is

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If a power transformer is operated at very high frequencies, then ______

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A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____.

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The leakage flux in a transformer depends upon

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A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load?

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