A) \[\frac{1}{\sqrt{3}}\]
B) \[\frac{1}{\sqrt{2}}\]
C) \[\frac{1}{2}\]
D) \[\frac{1}{3}\]
Correct Answer: C
Solution :
\[{{i}_{WL}}\,=\,{{i}_{rms}}\sin \,\phi \,\,\Rightarrow \,\,\sqrt{3}\,\,=\,\,2\,\sin \,\phi \,\] \[\Rightarrow \,\,\,\,\sin \,\phi \,\,=\,\,\frac{\sqrt{3}}{2}\]^ \[\Rightarrow \,\,\,\,\phi \,\,=\,\,60{}^\circ \,so\,p.f.\,\,=\,\,\cos \,\phi \,\,=\,\,\cos \,\,60{}^\circ \,=\,\,\frac{1}{2}\]You need to login to perform this action.
You will be redirected in
3 sec