I am do this problem in ideal transformer :
where is wrong?

thanks

please see my problem

 

My solution attached.

sir your solution different from book solution

thanks

 

there is any person help my please?

 

hi,
Recheck the Primary to Secondary Phase relationship for mesh #2.
Look at the 'Dot' on the windings.
E

 

hi,
Recheck the Primary to Secondary Phase relationship for mesh #2.
Look at the 'Dot' on the windings.
E

thanks sir for help my

mesh 2:
8I2 + 2(I2 - I3) - v2=0

10I2 - 2I3 - v2 =0

I check but I not see any wrong

thanks

 

what I will do?

 

Which problem circuit are you asking about, I thought that is was the circuit in post #20.?

I see a new circuit in post #22.?

E

 

Which problem circuit are you asking about, I thought that is was the circuit in post #20.?

I see a new circuit in post #22.?

E

I am very sorry sir

I ask on post #20

 

sir your solution different from book solution

thanks

I'll let you decide which is correct. I'm not changing my solution until convinced otherwise.

More importantly, when you ask about a new problem start a new thread. It becomes too difficult keeping track of what question among the several you are referring to.

 

sir your solution different from book solution

thanks

The book's equation for mesh 1 doesn't include the effect of the mutual inductance on the I1 current. As you go around the mesh you encounter the j480 inductor; the voltage across that inductor includes the effect of I1 in the j720 inductor. As you continue going around the mesh, you encounter the j720 inductor; the voltage across that inductor includes the effect of I1 in the j480 inductor.

Together those two effects give you two (-j360 I1) terms in your mesh 1 equation. The effect of I1 in the mutual inductance must be taken into account twice.

Either the book forgot to take that into account at all, or they mistakenly gave a + sign to one occurrence and a - sign to the other occurrence which would cancel the terms. But, whatever their mistake, there should be an additional -j720 I1 added to the mesh 1 equation. The book solution is wrong.

Start a new thread for the problem you gave in post #20.

 

I'll let you decide which is correct. I'm not changing my solution until convinced otherwise.

More importantly, when you ask about a new problem start a new thread. It becomes too difficult keeping track of what question among the several you are referring to.

thanks sir I will do new thread

 

The book's equation for mesh 1 doesn't include the effect of the mutual inductance on the I1 current. As you go around the mesh you encounter the j480 inductor; the voltage across that inductor includes the effect of I1 in the j720 inductor. As you continue going around the mesh, you encounter the j720 inductor; the voltage across that inductor includes the effect of I1 in the j480 inductor.

Together those two effects give you two (-j360 I1) terms in your mesh 1 equation. The effect of I1 in the mutual inductance must be taken into account twice.

Either the book forgot to take that into account at all, or they mistakenly gave a + sign to one occurrence and a - sign to the other occurrence which would cancel the terms. But, whatever their mistake, there should be an additional -j720 I1 added to the mesh 1 equation. The book solution is wrong.

Start a new thread for the problem you gave in post #20.

thanks sir for help my in post #22 and I will do new thread