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 2 of 6.
Sarvesh kotiyal said:
1 decade ago
When the turn ratio comes its simple means secondary/primary winding.
Here turn ratio = N2/N1 = 15/1.
& VOLTAGE RATIO = 110/V2?
N1/N2 = V1/V2 OR N2/N1 = V2/V1.
=> N2/N1 = 15/1 =110/V2.
V2 = 110/15.
Here turn ratio = N2/N1 = 15/1.
& VOLTAGE RATIO = 110/V2?
N1/N2 = V1/V2 OR N2/N1 = V2/V1.
=> N2/N1 = 15/1 =110/V2.
V2 = 110/15.
Donald godide said:
1 decade ago
Ratio determines whether its a stepdown or stepup here it is said that the ratio is 15:1 so it a stepdown using our ratio for calculations 15=110 1=x we cross multiply x=110/15 which iz equal to 7.333
Somnath said:
1 decade ago
@dilip.
Ratio given 15:1 so N1/N2=15/1 always, where N1=15, N2=1 then you can apply your formula i.e. N2/N1=V2/V1, except V2 all the others like N2. N1 & V1 known and the answer will be 7. 33V.
Ratio given 15:1 so N1/N2=15/1 always, where N1=15, N2=1 then you can apply your formula i.e. N2/N1=V2/V1, except V2 all the others like N2. N1 & V1 known and the answer will be 7. 33V.
Imran ali said:
7 years ago
It is so simple just use formula.
N1/N2=V1/V2.
then
put values
15/1=110/V2 (finding value of V2 we can write V2).
so on.
15= 110/V2 then cross multiplying.
V2=110/15,
V2=7.3v.
N1/N2=V1/V2.
then
put values
15/1=110/V2 (finding value of V2 we can write V2).
so on.
15= 110/V2 then cross multiplying.
V2=110/15,
V2=7.3v.
(2)
Parveen said:
1 decade ago
Because 110*15=1650 not given in answer and 110/15=7. 33 is given so we take N1=15 & N2=1 otherwise vise-verse.
In most cases we take turn ratio N2/N1 means N2=15 & N1=1.
In most cases we take turn ratio N2/N1 means N2=15 & N1=1.
Anu said:
1 decade ago
This question is not clear to me as earlier we used this formula :
N2/N1 = V2/V1
hence here also
(N2/N1) = 15/1
Thus ans should be
15/1=V2/10
V2=150
Please make it clear
N2/N1 = V2/V1
hence here also
(N2/N1) = 15/1
Thus ans should be
15/1=V2/10
V2=150
Please make it clear
Kuldeep Bisht said:
1 decade ago
Some guye are confused,Plz note when ever turn ratio is shown in ratio i.e 15:1 it is always primary:secondary,Hence here N2=15 & N1=1
THUS V2=(N2/N1)*V1 U WILL GET 7.333v
THUS V2=(N2/N1)*V1 U WILL GET 7.333v
Dilip said:
1 decade ago
If they give turns ratio in exact value ie,15 then n2/n1 to be consider 15
if they give 15:1, then n1 = 15, n2 = 1 to be considered. If I'm correct please comment.
if they give 15:1, then n1 = 15, n2 = 1 to be considered. If I'm correct please comment.
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.
Follewer of Einstien said:
1 decade ago
Hey Friends. Its provided ratio of turns NOT TURNS RATIO.
Means. TURNS RATIO = 10 i.e. N2/N1.
And ratio of turns = 10:1 means N1:N2.
Please don't get confused.
Means. TURNS RATIO = 10 i.e. N2/N1.
And ratio of turns = 10:1 means N1:N2.
Please don't get confused.
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