Question

The equation of an alternating current is given by i=42.42 sin 628t. Calculate its (1) maximum value (2) frequency(3) rms value (4) average value.

Answer 1

Answer:

Step-by-step explanation:

1. Max value is 42.42

2. Frequency is 628/(2*pi), so about 100 Hz

3. RMS value of a sine wave is amplitude/sqrt(2)

so in this problem it's 42.42/sqrt(2) = about 30.0

4. "Average value" in this context usually means

average absolute value, which is

(2/pi)*amplitude = about 27

Answer 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

1. Max value is 42.42

2. Frequency is 628/(2*pi), so about 100 Hz

3. RMS value of a sine wave is amplitude/ sqrt(2)

so in this problem it's 42.42/sqrt(2) = about 30.0

4. "Average value" in this context usually means average absolute value, which is

(2/pi) amplitude = about 27