Question

Example 4 • A one-phase 100 kVA 240/120 V transformer is reconnected as an autotransformer:(a) Calculate the currents in each part of the autotransformer and determine its power rating if it is reconnected as a step-down 360/240 V autotransformer. Show the connection details of the autotransformer.(b) Repeat (a) if the transformer is reconnected as a step-up 240/360 V autotransformer.

          Example 4
• A one-phase 100 kVA 240/120 V transformer is
reconnected as an autotransformer:(a) Calculate the
currents in each part of the autotransformer and
determine its power rating if it is reconnected as a
step-down 360/240 V autotransformer. Show the
connection details of the autotransformer.(b) Repeat
(a) if the transformer is reconnected as a step-up
240/360 V autotransformer.

Example 4
• A one-phase 100 kVA 240/120 V transformer is
reconnected as an autotransformer:(a) Calculate the
currents in each part of the autotransformer and
determine its power rating if it is reconnected as a
step-down 360/240 V autotransformer. Show the
connection details of the autotransformer.(b) Repeat
(a) if the transformer is reconnected as a step-up
240/360 V autotransformer.

Added by William H.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Stylianos Gregoriou

Step 1

To calculate the currents in each part of the autotransformer, we can use the turns ratio formula: Np/Ns = Vp/Vs Where Np is the number of turns in the primary winding, Ns is the number of turns in the secondary winding, Vp is the primary voltage, and Vs is the Show more…

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A one-phase 100 kVA 240/120 V transformer is reconnected as an autotransformer: (a) Calculate the currents in each part of the autotransformer and determine its power rating if it is reconnected as a step-down 360/240 V autotransformer. Show the connection details of the autotransformer. (b) Repeat (a) if the transformer is reconnected as a step-up 240/360 V autotransformer.