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 4 of 6.
Ahmed Z said:
10 years ago
When we speak of turns ratio, it means ratio of primary turns to secondary turns i.e. N1:N2.
Akash said:
1 decade ago
Turns ratio(K) = N2/N1= V2/V1.
V2/110 = 1/15.
So, V2 = 1/15*110.
V2 = 110/15 = 7.33.
V2/110 = 1/15.
So, V2 = 1/15*110.
V2 = 110/15 = 7.33.
Debarshi Majumder said:
1 decade ago
V1/V2 = N1/N2.
V2 = 110/15 = 7.33.
But does it mean that the voltage across Rl=7.33?
V2 = 110/15 = 7.33.
But does it mean that the voltage across Rl=7.33?
Madhusudan said:
1 decade ago
@sundar.
In above ques. It is not mentioned that it is a step down or step up.
In above ques. It is not mentioned that it is a step down or step up.
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.
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.
Anand said:
1 decade ago
Hi guys first tell me the correct formula for step up & down transformer.
PRAVEEN KUMAR said:
1 decade ago
Turns ratio = N1/N2 always and Transformation Ratio = N2/N1 = E2/E1 = I1/I2.
Aadiii... said:
1 decade ago
Is there any difference between turns ratio and transformation ratio?
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.
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