Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 9)
9.
If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is
Discussion:
58 comments Page 2 of 6.
Relish said:
1 decade ago
Efficiency=output power/input power
output power=Vout*Iout
input power=Vin*Iin
eff=(Vout*Iout)/(Iin*Vin)
=(Vout/Vin)*(Iout/Iin)
=(N2/N1)*(N1/N2)
=1
Therefor, power output = power input.
output power=Vout*Iout
input power=Vin*Iin
eff=(Vout*Iout)/(Iin*Vin)
=(Vout/Vin)*(Iout/Iin)
=(N2/N1)*(N1/N2)
=1
Therefor, power output = power input.
Sunil M. Mude said:
1 decade ago
Basically for an ideal transformer in ieal condition losses are zero & its efficiency is 100%, also whatever primary side input that will be secondary output...
so the answer will be 25W....
so the answer will be 25W....
Sanjay said:
1 decade ago
I agree with mr. Shriniwas the transformer ratio does not have any effect on power transformer and is same for both primary and secondary only current and voltage varies as per turns ratio.
Gokul said:
1 decade ago
input power=Vin*Iin
ouput power=Vout*Iout
Vin/Vout=N1/N2
Iin/Iout=N2/N1
so,input power/output power = N1/N2*N2/N1=1
hence input power = output power, for ideal transformer
ouput power=Vout*Iout
Vin/Vout=N1/N2
Iin/Iout=N2/N1
so,input power/output power = N1/N2*N2/N1=1
hence input power = output power, for ideal transformer
Guna said:
1 decade ago
Its so simple an ideal transformer is free from losses so whatever the power is supplied to the primary winding the same power is delivered at output. So its obviously 25w.
Ramana IIIT said:
1 decade ago
In Ideal transformer the powerloss will be zero.
Givendata:-
N2/N1=10
P1=25
V2/V1=N2/N1---->10V1=V2
N2/N1=I1/I2---->I1=10I2
Power=VI
10V1I1=10V2I2
Then V1I1=V2I2
Givendata:-
N2/N1=10
P1=25
V2/V1=N2/N1---->10V1=V2
N2/N1=I1/I2---->I1=10I2
Power=VI
10V1I1=10V2I2
Then V1I1=V2I2
Ecet said:
3 years ago
An ideal transformer is one that has no losses. Its winding has no ohmic resistance, there is no magnetic leakage.
That means to input power = output power.
That means to input power = output power.
(3)
Pabitra Kumar sahu said:
8 years ago
An ideal transformer is one which has no losses. Its winding has no ohmic resistance, there is no magnetic leakage.
That means input power = output power.
That means input power = output power.
Sujata said:
10 years ago
Is there any difference between power and rating of transformer?
Because in above problem they have given power in W, where as rating is given in KVA.
Because in above problem they have given power in W, where as rating is given in KVA.
Brijmohan said:
1 decade ago
Transformer ratio does not have any effect of transformer power.
Transformer power is same in both side & only voltage and current are variable.
Transformer power is same in both side & only voltage and current are variable.
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