241. Трансформатор, содержащий №1 = 480 витков в первичной обмотке, понижает напряжение от U1 = 880 В до U = 220 В. Определить коэффициент трансформации и число витков вторичной обмотки на холостом ходу трансформатора.
The coefficient of transformation is 0.25 and the number of windings in the secondary coil is 120. This means that for every 1 turn in the primary coil, there are 0.25 turns in the secondary coil. This information can be used to calculate the primary voltage and secondary voltage at any given time. To find the number of windings in the secondary coil on an idle transformer, the primary voltage and secondary voltage on load can be used. The primary voltage is the voltage applied to the primary coil and the secondary voltage is the voltage on the secondary coil. The primary voltage is divided by the secondary voltage and the result is multiplied by the number of turns in the primary coil. This gives the number of turns in the secondary coil on load. In this case, the primary voltage is 880 V and the secondary voltage is 220 V, so the number of turns on the secondary coil is 120 on load.
