Electro Magnetic Induction And Alternating Currents Question 212
Question: The primary of a winding transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at 1000 V is 12 kW, what is the primary voltage?
Options:
A) 200V
B) 300V
C) 400V
D) 500V
Show Answer
Answer:
Correct Answer: A
Solution:
-
$ N_{P}=400,n=N_{S}=2000V_{S}=1000V. $
$ \frac{V_{p}}{V_{S}}=\frac{N_{p}}{N_{s}} $
of $ V_{p}=\frac{V_{S}\times N_{P}}{N_{S}}=\frac{1000\times 400}{2000}=200V $
