The instantaneous value of the AC power with a frequency of 50 Hz is 2 A for the N / 4 phase.
| June 28, 2021 | education
The instantaneous value of the AC power with a frequency of 50 Hz is 2 A for the N / 4 phase. What is the current strength amplitude? Find the instantaneous value of the current in 0.015s, counting from the beginning of the period.
ν = 50 Hz.
I1 = 2 A.
Φ1 = p / 4.
T2 = 0.015 s.
Im -?
I2 -?
AC power varies according to the formula: I = im * cosφ.
I1 = im * cosφ1.
Im = i1 / cosφ1.
Im = 2 A / COSP / 4.
Im = 2 a / 0,707 = 2.83 A.
I2 = im * cosφ2.
φ2 = ω * T2 = 2 * P * ν * T2.
I2 = IM * COS (2 * n * ν * T2).
I2 = 2.83 A * COS (2 * 3.14 * 50 Hz * 0,015 s) = 2.83 A * 0 = 0 A.
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