GATE IN concept:open-circuit PYQs & Answers

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Topic practice 2 questionsPage 1 of 1

A single phase transformer has a rating of 10 kVA, 50 Hz, 1100 V/220 V. In an open circuit test with the high voltage side open, the following are obtained:

• Voltage applied to the low voltage winding = 220 V • Measured power = 363 W • Measured current = 2.75 A

Magnetizing reactance

referred to the high voltage winding is ______ Ω. (rounded off to the nearest integer)

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A single-phase transformer has a magnetizing inductance of 250 mH and a core loss resistance of 300

, referred to primary side. When excited with a 230 V, 50 Hz sinusoidal supply at the primary, the power factor of the input current drawn, with secondary on open circuit, is ____ (rounded off to two decimal places).

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GATE IN concept:open-circuit PYQs

How to practice concept:open-circuit

Question 58

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