Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 10)
10.
A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load?
7.3 V
73 V
88 V
880 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
53 comments Page 6 of 6.

Sundar said:   1 decade ago
@Imran

Given value N1:N2 = 15 : 1 (That is N1 = 15, N2 = 1)

Turns ratio = (N1/N2) = 15/1 (ratio > 1 ; Step down transformer).

As you said, V2/V1 = N2/N1

V2/110v = 1/15

V2 = 110v/15

V2 = 7.3333... volts.

Hope this will help to clear your doubts. Have a nice day!

Imran said:   1 decade ago
V2/V1=N2/N1
V2/110=15/1
V2=1650

What is the problem with this ?

Vinay said:   1 decade ago
N1/N2=V1/V2
15/1=110/V2
V2=110/15
V2=7.3
SAME ACROSS THE RL LAOD


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