In a transformer setup, how should the secondary be connected to obtain higher voltage in single phase?

To obtain a higher voltage in a single-phase transformer setup, the secondary winding must be connected in series. When windings are connected in series, the voltages from each winding add together, resulting in an overall higher output voltage. This method harnesses the principle of electromagnetic induction, where the voltage is proportional to the number of turns of wire in the winding.

In a series connection, if each winding has a certain voltage, the total output voltage is the summation of the individual voltages across each secondary. Therefore, connecting the secondary windings in series is the correct method for achieving a higher voltage output from a transformer.

Parallel connections, on the other hand, would not increase voltage; rather, they would maintain the same voltage level while potentially increasing current. The use of capacitors or closed loops is not standard practice for stepping up voltage in transformer configurations and could interfere with the function of the transformer.