A) 0.2 sec
B) 0.25 sec
C) \[25\times {{10}^{-3}}\]sec
D) \[2.5\times {{10}^{-3}}\]sec
Correct Answer: D
Solution :
Peak value to r.m.s. value means, current becomes \[\frac{1}{\sqrt{2}}\] times. So from \[i={{i}_{0}}\sin 100\pi t\Rightarrow \frac{1}{\sqrt{2}}\times {{i}_{0}}={{i}_{0}}\sin 100\pi t\] \[\Rightarrow \sin \frac{\pi }{4}=\sin 100\pi t\Rightarrow t=\frac{1}{400}sec\]\[=2.5\times {{10}^{-3}}sec.\]
You need to login to perform this action.
You will be redirected in
3 sec
