Question

In scott connections, the teaser transformer operates on 0.866 of its rated ________.
1. Inductance
2. Capacitance
3. Reactance
4. Voltage

Answer 1

Correct Answer - Option 4 : Voltage

Scott connection:​

• The Scott-T Connection is the method of connecting two single-phase transformers to perform the 3-phase to 2-phase conversion and vice-versa.
• The two transformers are connected electrically but not magnetically.
• One of the transformers is called the main transformer, and the other is called the auxiliary or teaser transformer.
• The main transformer is center-tapped at D and is connected to line B and C of the 3-phase side. It has primary BC and secondary a1a2.
• The teaser transformer is connected to the line terminal A and the center tapping D. It has primary AD and the secondary b1b2.
• The identical, interchangeable transformers are used for Scott-T connection in which each transformer has a primary winding of Tp turns and is provided with tapping at 0.289 Tp, 0.5 Tp, and 0.866 Tp.
• The teaser transformer has the primary voltage rating that is √3/2 or 0.866 of the voltage ratings of the main transformer.