Q. Potential transformers are used with _________

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Q. Potential transformer is similar in design to a _________

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Q. The secondary winding of a P.T. is designed for _________

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Q. The primary current in a C.T. is _________

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Q. The excitation current of a C.T. _________

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Q. Secondary of a P.T. can be open circuited.

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Q. When C.T. is connected in series with a line, a large voltage exists across the primary.

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Q. Winding resistance of a P.T. can be reduced by _________

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Q. Leakage reactance is minimised by _________

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Q. High flux density is due to less turns.

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Q. Ratio error in a P.T. depends on _________

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Q. In a P.T. values of components of currents are negligible.

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Q. Ratio error can be minimised by _________

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Q. Another method of eliminating the ratio error is _________

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Q. How is the voltage ratio dependent on the frequency?

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Q. Increasing secondary burden _____________

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Q. For a given Vₚ the Vₛ __________

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Q. What is effect of the secondary burden on the ratio error?

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Q. Vₚ is leading in phase, while Vₛ is lagging in phase.

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Q. What is the effect of p.f. on secondary burden?

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