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Electronics and Communication Engineering (ECE) : Power Electronics - Quiz(MCQ)
An SCR has half cycle surge current rating of 3000 A for 50 Hz. Calculate its one-cycle surge current rating
A)
2131.32 A
B)
2121.32 A
C)
3121.32 A
D)
3131.32 A

Correct Answer : Option (B) :   2121.32 A


Explanation : By equating the energies involved in one cycle & subcycle
I2.T = Isb2.t
Isb = 3000 A
T = 1/50
t = T/2.

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