Contents
- 1 What is Dot convention How does it help in solving magnetically coupled circuits?
- 2 When two coupled coils of equal self inductance are connected in series in one way the net inductance is 20 mH and when they are connected in the other way the net inductance is 12 mH The maximum value of net inductance when they are connected in parallel is?
- 3 When two coils are magnetically isolated then the value of k is?
- 4 What is the magnitude of the mutually induced voltage in the J20 coil?
- 5 How are voltage and current values determined in a circuit?
What is Dot convention How does it help in solving magnetically coupled circuits?
Dot Convention This information is useful, while writing KVL equations. If the current enters at the dotted terminal of one coil (or inductor), then it induces a voltage at another coil (or inductor), which is having positive polarity at the dotted terminal.
When two coupled coils of equal self inductance are connected in series in one way the net inductance is 20 mH and when they are connected in the other way the net inductance is 12 mH The maximum value of net inductance when they are connected in parallel is?
When two coupled coils of equal self inductance are connected in series in one way, the net inductance is 12 mH and when they are connected in the other way, the net inductance is 4 mH. The maximum value of net inductance when they are connected in parallel In a suitable way is. 6mH. 4mH.
When two coils are magnetically isolated then the value of k is?
k=1, when the flux produced by one coil, completely links with the other coil and is called magnetically tightly coupled. k=0, when the flux produced by one coil, does not link at all with the other coil and thus the coils are said to be magnetically isolated.
What are the problems with a magnetically coupled circuit?
In the second problem, keep in mind that both I1 & I2 flow in the j10 side of the mutually coupled coils. So the magnitude of the mutually induced voltage in the j20 coil due to the flow (I1-I2) in the j10 coil side will be 5j* (I1-I2). This voltage will oppose the indicated I2 current flow.
What’s the best way to solve a mutually coupled circuit?
I find an important step in solving mutually coupled circuits is to redraw the circuit with each of the mutually induced voltage components shown as an equivalent source with the appropriate magnitude and polarity. What approach do you take?
What is the magnitude of the mutually induced voltage in the J20 coil?
So the magnitude of the mutually induced voltage in the j20 coil due to the flow (I1-I2) in the j10 coil side will be 5j* (I1-I2). This voltage will oppose the indicated I2 current flow. The mutually induced voltage magnitude in the j10 side due to the flow of I2 in the j20 side will be 5j*I2.
How are voltage and current values determined in a circuit?
One can certainly use simulation (Spice based) software to come up with time based values of voltage and current for a given circuit layout.