A) \[20\text{ }V\]and\[0.1\text{ }A\]
B) \[0.2\text{ }V\]and \[1\text{ }A\]
C) \[20\,\,V\]and \[0.09\text{ }A\]
D) \[0.2\,\,V\]and \[0.9\text{ }A\]
Correct Answer: A
Solution :
Given, \[{{N}_{P}}=10\] \[{{N}_{S}}=100,\,\,\,\,\,\,\,\,\,\eta =90%\] \[{{N}_{P}}=2V,\,\,\,\,\,\,\,\,\,{{V}_{S}}=?\] \[{{i}_{P}}=1\,A,\,\,\,\,\,\,\,\,\,{{i}_{S}}=?\] For a transformer \[\frac{{{N}_{S}}}{{{N}_{P}}}=\frac{{{V}_{S}}}{{{V}_{P}}}=\frac{{{i}_{P}}}{{{i}_{S}}}\] \[\frac{100}{10}=\frac{{{V}_{S}}}{2}\] \[\Rightarrow \] \[{{V}_{S}}=20V\] Similarly, \[\frac{100}{10}=\frac{1}{{{i}_{S}}}\] \[{{i}_{S}}=0.1A\]
You need to login to perform this action.
You will be redirected in
3 sec
