Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 11)
11.
How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V?
Answer: Option
Explanation:
We know that, V2/V1 = N2/N1.
Given V2 = 9v, N2/N1 = 0.1
Therefore, 9v/V1 = 0.1
V1 = 9v/0.1 = 90v.
For more detail: Step Down Transformer - Circuit with Simulation.
Discussion:
24 comments Page 3 of 3.
Yogesh sabota said:
1 decade ago
I agree with farah this is incorrect
turn ratio=n1/n2=1/10
therefore
v1=0.9v
turn ratio=n1/n2=1/10
therefore
v1=0.9v
Farah said:
1 decade ago
But turn ratio Np/Ns=0.1
Then,
Vp/Vs=Np/Ns
Vp/9=0.1
Vp=9
Is it correct?
Then,
Vp/Vs=Np/Ns
Vp/9=0.1
Vp=9
Is it correct?
Chandresh Soni said:
1 decade ago
I agree with Parashkthi
Parashkthi.P.R said:
1 decade ago
E2/E1=N2/N1
N2/N1=0.1
E2=9
E1=9/0.1=90V
N2/N1=0.1
E2=9
E1=9/0.1=90V
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