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?
. What is the approximate voltage across the load?Discussion:
53 comments Page 3 of 6.
PRASUN PARASHAR said:
10 years ago
Dear friends;
Always we take.
Turn ratio = Primary side (voltage)/Secondary side voltage.
Also it is given. Primary voltage is 110 volts.
So don't be confused.
Always we take.
Turn ratio = Primary side (voltage)/Secondary side voltage.
Also it is given. Primary voltage is 110 volts.
So don't be confused.
Wasim iqbal said:
9 years ago
Ns : Np = 15 : 1.
So, Ns = 1 ; Np = 15.
Vp = 110.
Here the relation is Ns / Np = Vs / Vp.
Substituting the values, we get:
Vs = 7.3V.
So, Ns = 1 ; Np = 15.
Vp = 110.
Here the relation is Ns / Np = Vs / Vp.
Substituting the values, we get:
Vs = 7.3V.
Er Sahal said:
9 years ago
N2 / N1 = V2 / V1,
1 / 15 = V2 / 110,
0.0666666667 - 110 = V2,
V2 = 7.3 V.
1 / 15 = V2 / 110,
0.0666666667 - 110 = V2,
V2 = 7.3 V.
Puja said:
9 years ago
Please tell me, what is the actual turns ratio?
Mahendar said:
9 years ago
What's the correct formula for turns ratio of transformer?
n2/n1 or n1/n2.
n2/n1 or n1/n2.
Kiran kumar said:
8 years ago
v2=RL-v1/turn ratio*1/1,
v2=120-110/15*1/1,
v2=7.3 Answer.
v2=120-110/15*1/1,
v2=7.3 Answer.
Aswini said:
7 years ago
Why did they mention reluctance here?
Wojdij said:
1 decade ago
K=V1/V2=N1/N2
110/V2=15/1
110/15=V2
V2=7.33
110/V2=15/1
110/15=V2
V2=7.33
Imran said:
1 decade ago
V2/V1=N2/N1
V2/110=15/1
V2=1650
What is the problem with this ?
V2/110=15/1
V2=1650
What is the problem with this ?
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!
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!
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