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Shane Macguire Grade: upto college level
        Find the time required for a 50 Hz alternating current to change its value form zero to the rms value.
3 years ago

Answers : (2)

Aditi Chauhan
askIITians Faculty
396 Points
										Sol. f = 50 Hz

I = I base 0 Sin Wt
Peak value I = I base 0/√2
I base 0/√2 = I base 0 Sin Wt
⇒ I base 0/√2 Sin Wt = Sin π/4
⇒ π/4 = Wt. or, t = π/400 = π/4 * 2πf = 1/8f = 1/8 * 50 = 0.0025 s = 2.5 ms
3 years ago
Arun Kumar
IIT Delhi
askIITians Faculty
256 Points
										
Hello
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
3 years ago
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