Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 14)
14.
The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 
load. The turns ratio is 3:1. What is the secondary voltage?
load. The turns ratio is 3:1. What is the secondary voltage?Discussion:
27 comments Page 2 of 3.
Akash.bhure said:
1 decade ago
Solution:
Primary voltage(V1) = 60V.
Turns ratio(K) = N2/N1 = V2/V1.
V2 = N2/N1*V1.
V2 = 1/3*60 = 60/3 = 20V.
Primary voltage(V1) = 60V.
Turns ratio(K) = N2/N1 = V2/V1.
V2 = N2/N1*V1.
V2 = 1/3*60 = 60/3 = 20V.
RAMYA S said:
1 decade ago
What is the difference b/w turns ratio and transformer ratio?
Sanju said:
1 decade ago
Turn ratio is n2/n1 always.
Preeti Hazarika said:
1 decade ago
Case1: For step down transformer, primary has more turns than secondary.
Thus N2=1 & N1=3, So Turns ratio, N2/N1=1/3.
In that way Option B is correct.
Case 2: For step up transformer, N2/N1=3/1,
In this case option C will be correct.
In this question volt drop is there due to resistance thus 1st case seems valid.
Thus N2=1 & N1=3, So Turns ratio, N2/N1=1/3.
In that way Option B is correct.
Case 2: For step up transformer, N2/N1=3/1,
In this case option C will be correct.
In this question volt drop is there due to resistance thus 1st case seems valid.
Punnam chander said:
1 decade ago
N1:N2 = 3:1.
R-L = 330 ohms.
N2/N1= 1/3.
N2/N1= V2/V1.
V2 = 20 but this one is not answer he asking about across the R-L.
So, V2 = (I)(R-L).
I = V2/RL = 20/330.
I = 2/33.
V2 = (2/33)*(330) = 20.
R-L = 330 ohms.
N2/N1= 1/3.
N2/N1= V2/V1.
V2 = 20 but this one is not answer he asking about across the R-L.
So, V2 = (I)(R-L).
I = V2/RL = 20/330.
I = 2/33.
V2 = (2/33)*(330) = 20.
Archana said:
10 years ago
Transformation ratio is N2/N1 and Turns ratio is N1/N2 is this right?
Pratap Kumar said:
10 years ago
Turn ratio = N2:N1 = 3:1.
This is the basic fundamental all we have to aware.
Now solve answer is 180.
This is the basic fundamental all we have to aware.
Now solve answer is 180.
Er Sahal said:
9 years ago
V2 / V 1= N2 / N1,
V2 / 60 = 1/3,
V2 * 3 = 60 * 1 (Cross Multiplication),
V2 = 60 / 3,
V2 = 20 V.
V2 / 60 = 1/3,
V2 * 3 = 60 * 1 (Cross Multiplication),
V2 = 60 / 3,
V2 = 20 V.
(1)
Aghogho said:
9 years ago
Turns ratio = transformer ratio = N2/N1=3/1.
So solve and get 180.
So solve and get 180.
(1)
ANUPAM ANAND said:
9 years ago
Sometimes you take turn ratio means n1/n2 & sometimes you take n2/n1. So tell me that what is actual means of turn ratio?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers