Transformer – 12

12. The main purpose of performing open-circuit test on a transformer is to measure its :

(a) Cu loss
(b) core loss
(c) total loss
(d) insulation resistance

Answer

Answer : (b)

Explanation

Explanation : No answer description available for this question. Let us discuss.

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Electrical Engineering Books

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Transformer » Exercise - 114. At relatively light loads, transformer efficiency is low because : (a) secondary output is low (b) transformer losses are high (c) fixed loss is high in proportion to the output (d) Cu loss is small
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Transformer » Exercise - 115. The ordinary efficiency of a given transformer is maximum when : (a) it runs at half full-load (b) it runs at full-load (c) its Cu loss equals iron loss (d) it runs slightly overload
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Transformer » Exercise - 111. No-load test on a transformer is carried out to determine : (a) copper loss (b) magnetising current (c) magnetising current and no-load loss (d) efficiency of the transformer
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Transformer » Exercise - 1 1. A transformer transforms : (a) frequency (b) voltage (c) current (d) voltage and current
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