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- Subject
- Electrical Machine Designelectrical-engineering-mcqs › electrical-machine-design
- Published
- 22 Dec 2018
- Last updated
- 28 May 2026
Explanation
Multi-layer helical windings are generally used as high voltage windings in transformers designed for voltages of 110 kV and above, as they provide better insulation and mechanical strength at higher voltage levels.
More Electrical Machine Design MCQs
Practice related questions from the same subject.
- 1.How does the input impedance of a JFET compare to that of a conventional transistor?
- 2.What level of permeability does cold rolled grain-oriented steel exhibit along the grain direction?
- 3.What type of winding configuration is typically used in transformers when cylindrical coils are made with round conductors?
- 4.What type of magnetic permeability does cold-rolled grain-oriented steel exhibit along the grain direction?
- 5.In which type of transformer are helical windings typically employed?
- 6.Disc windings are mainly employed in which type of transformers?
- 7.For transformers with what capacity range is the forced circulation of oil and air commonly implemented?
- 8.How is the heat dissipation enhanced in transformers with ratings exceeding 30 kVA?
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