246. The value of useful flux least depends on
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247. In which of the following trail' irmer part of primary winding also serves as the secondary winding?
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248. Which of the following canbe reduced when the flux density in the transformer core is increased?
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249. Burden of a current transformer is usually expressed in
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250. Current transformers for meters and relays usually have
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251. All day efficiency is the ratio of output to input in
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252. While performing back-to-back test, the amount of power consumed is equal to
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