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ESE 2021 Technical Quiz 102|| Transformers, efficiency

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Question 1

A 200 kVA, 330/240V, 50 Hz single-phase transformer has 80 turns on the secondary winding. Assuming an ideal transformer, the primary current I1 and secondary current I2 on full load are nearly

Question 2

The correct ratio of transformer is:

Question 3

A transformer core is wound with a coil carrying an alternating current at a frequency of 50 Hz. The magnetization is uniform throughout the core volume of 0.01 m3, the hysteresis loop has an area of 60,000 units when the axes are drawn in units of 10–4 Wb m–2 and 102 Am–1. The power loss due to hysteresis will be

Question 4

Which among the following conditions are correct in case of Ideal transformer?

Question 5

For a step-up transformer, which among the following options are correct?
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Jun 10ESE & GATE EC