Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 2)
2.
The turns ratio required to match an 80 
source to a 320 load is
source to a 320 load isDiscussion:
101 comments Page 8 of 11.
Amjad moawia said:
9 years ago
No! @Hanumantha Hk.
The correct law is : vs/sp = NS/NP = IP/IS.
Please, revise once again.
The correct law is : vs/sp = NS/NP = IP/IS.
Please, revise once again.
Sudha said:
9 years ago
Can anybody solve this problem in a simple way?
Nidu said:
9 years ago
Sqr(Np/Ns) = Zp/Zs,
Because turns ratio is Np/Ns not Ns/Np.
Because turns ratio is Np/Ns not Ns/Np.
Yash said:
9 years ago
Is any technique to know the KVA rating of the transformer without nameplate?
Haji Bilal said:
9 years ago
Hello, @Yash.
It should require to measure current and voltage of transformer from the secondary side. Then you will able to know KVA rating of the transformer!
It should require to measure current and voltage of transformer from the secondary side. Then you will able to know KVA rating of the transformer!
K.gopala krishna said:
9 years ago
Here the value is in ohms.
i.e resistive
It will be more in winding.
n2/n1 = k,
320/80 = k,
= 4.
i.e resistive
It will be more in winding.
n2/n1 = k,
320/80 = k,
= 4.
K.Gopalakrishna said:
9 years ago
Transformation ratio k = n2/n1.
Here the given value is in ohms i.e resistive.
That will be more in the winding.
i.e 320/8 = 4.
Here the given value is in ohms i.e resistive.
That will be more in the winding.
i.e 320/8 = 4.
Prafulla said:
8 years ago
If primary Resistance transfer to the secondary winding. Then,
R2=K^2 R1.
320=K^2 80,
K^2=320/80 = 4.
K= √4 = 2.
R2=K^2 R1.
320=K^2 80,
K^2=320/80 = 4.
K= √4 = 2.
MB SHARON said:
8 years ago
The National Instructional Media Institute (NIMI) for Industrial Traning book.
Np/Ns=Zp/Zs.
Where,
Np=No of turns in the primary.
Ns=No of turns in the secondary.
Zp=primary impedance or (source).
Zs=secondary impedance or (load).
Sol; Source Z=80 ohm.
Load Z =320ohm.
Zp/Zs=80/320.
Turns Ratio =1:2 answer= 2.
1:2 Turns ratio match the 80 ohm source impedance to a 320 ohm load.
Np/Ns=Zp/Zs.
Where,
Np=No of turns in the primary.
Ns=No of turns in the secondary.
Zp=primary impedance or (source).
Zs=secondary impedance or (load).
Sol; Source Z=80 ohm.
Load Z =320ohm.
Zp/Zs=80/320.
Turns Ratio =1:2 answer= 2.
1:2 Turns ratio match the 80 ohm source impedance to a 320 ohm load.
Surinder Rajput said:
8 years ago
Here is the little formula for impedance VS turns.
a= Turns Ratio, (Np/Ns)=Square Root of (Zp/Zs),
Square root of (380/20)=4/1,
Square root of (4/1)=2,
So 2.
a= Turns Ratio, (Np/Ns)=Square Root of (Zp/Zs),
Square root of (380/20)=4/1,
Square root of (4/1)=2,
So 2.
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