GATE EE 2014 Set 3 — Question 50
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Electrical Machines → Single-Phase Transformers → Equivalent Circuit & Phasor
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Question
The parameters measured for a 220V/110V, 50 Hz, single-phase transformer are:
Self inductance of primary winding = 45 mH
Self inductance of secondary winding = 30 mH
Mutual inductance between primary and secondary windings = 20 mH
Using the above parameters, the leakage (, ) and magnetizing () inductances as referred to primary side in the equivalent circuit respectively, are
Self inductance of primary winding = 45 mH
Self inductance of secondary winding = 30 mH
Mutual inductance between primary and secondary windings = 20 mH
Using the above parameters, the leakage (, ) and magnetizing () inductances as referred to primary side in the equivalent circuit respectively, are
Correct answer
(B) 5mH, 80mH and 40mH
Solution
Given:
Primary voltage V, Secondary voltage V.
Turns ratio .
Primary self-inductance mH.
Secondary self-inductance mH.
Mutual inductance mH.In the T-equivalent circuit referred to the primary side:
Primary voltage V, Secondary voltage V.
Turns ratio .
Primary self-inductance mH.
Secondary self-inductance mH.
Mutual inductance mH.In the T-equivalent circuit referred to the primary side:
1.Magnetizing inductance referred to primary mH.
2.Primary leakage inductance mH.
3.Secondary leakage inductance referred to primary mH.
Therefore, the inductances are mH, mH, and mH.Continue learning with Success Tracker
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