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 1 of 6.
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)
Abishek said:
5 years ago
Simply. The transformer is a machine which do not change the power and the frequency. It is only to change the voltage level
(1)
HAris said:
6 years ago
No, doubt in ideal input=output so the answer is correct = 25W.
But if we calculate it:
E2/E1 = I1/I2 = N2/N1.
THEN,
E2*I2/E1*I1 = N2/N1.
P2/P1 = K
P2 = K*P1
P2 = 10*25 = 250W THEN, THIS WILL BE THE ANSWER.
But if we calculate it:
E2/E1 = I1/I2 = N2/N1.
THEN,
E2*I2/E1*I1 = N2/N1.
P2/P1 = K
P2 = K*P1
P2 = 10*25 = 250W THEN, THIS WILL BE THE ANSWER.
(4)
Deepak said:
6 years ago
Because we know that
(V2/V1)=(I1/I2) --------------------------> (1)
To solving this (V2*I2)=(V1*I1) -------------------------> (2)
And we know that power=V*I
Then from equation (2) P2=P1.
The power of the primary side will be equal to the power of secondary side.
(V2/V1)=(I1/I2) --------------------------> (1)
To solving this (V2*I2)=(V1*I1) -------------------------> (2)
And we know that power=V*I
Then from equation (2) P2=P1.
The power of the primary side will be equal to the power of secondary side.
(1)
Ummeaiman aleem said:
7 years ago
Transformer is a device which transform power or energy from one circuit to another circuit.
By increasing or decreasing voltage and current portion ally, so input power and output power remains same, accept some losses.
By increasing or decreasing voltage and current portion ally, so input power and output power remains same, accept some losses.
Manish said:
7 years ago
Turns ratio is given to just confuse the student. The fact is that for an ideal transformer;
Input power = output power.
Input power = output power.
Abdul said:
8 years ago
Why power transformer is designed to have max efficiency at full load?
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.
DB Mandal said:
8 years ago
In an ideal transformer vpip = voio means input voltage x input current =output voltage x output current. But if the secondary is shorted the output voltage become zero, however output current is not zero.
Then the formula above fails. exp vp=230V, ip=5A and vo=0v the primary vpip=230 x 5 and secondary voio=0x io=0VA so vpip is not equal to voio. Then the above formula fails, is it not ?
Then the formula above fails. exp vp=230V, ip=5A and vo=0v the primary vpip=230 x 5 and secondary voio=0x io=0VA so vpip is not equal to voio. Then the above formula fails, is it not ?
Sai reddy said:
8 years ago
Basically ideal transformer means I/P = O/P.
So 25kw = 25kw.
So 25kw = 25kw.
(1)
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