Question

4. сила тока в первичной обмотке трансформатора I 1 =0.5 A на его концах напряжение 1 = 220В. сила тока во вторичной обмотке трансформатора I 2 =11A, его напряжение на концах U 2 =9,5 В. найди КПД трансформатора. Ƞ-?

Answer 1

Ответ: Вроде должно быть  правильно :)

Объяснение:

1000-7

Answer 2

Calculation of Transformer Efficiency (КПД трансформатора)

To calculate the efficiency (КПД) of a transformer, we need to know the power input and power output of the transformer. The efficiency of a transformer is given by the formula:

КПД = (Power output / Power input) * 100%

In this case, we are given the current in the primary winding (I1 = 0.5 A), the voltage in the primary winding (U1 = 220 V), the current in the secondary winding (I2 = 11 A), and the voltage in the secondary winding (U2 = 9.5 V).

To calculate the power input and power output, we can use the formulas:

Power input = Voltage input * Current input

Power output = Voltage output * Current output

Let's calculate the power input and power output first:

Power input = U1 * I1 = 220 V * 0.5 A = 110 W

Power output = U2 * I2 = 9.5 V * 11 A = 104.5 W

Now, we can calculate the efficiency (КПД) using the formula mentioned earlier:

КПД = (Power output / Power input) * 100% = (104.5 W / 110 W) * 100% ≈ 94.91%

Therefore, the efficiency (КПД) of the transformer is approximately 94.91%.

Please note that the calculations provided are based on the given information and assumptions.