Mutual inductance and coefficient of coupling, Electrical Engineering

Mutual inductance and coefficient of coupling:

The equivalent inductance of two series connected coil (with mutual inductance among them) is 0.8 or 0.2 Henry based on the relative directions of currents in the coil. If self inductance of one coil is 0.4 Henry then find out (a) Mutual inductance; and (b) coefficient of coupling.


For M-Positive :

Leq = L1 + L2 + 2M

0.8 = L1 + L2 + 2M        ---------------- (i)

1950_Mutual inductance and coefficient of coupling.png


For M negative

Leq = L1 + L2 - 2M

0.2  = L1 + L2 - 2M       ----------- (ii)

 From Eqs. (i) and (ii)

0.6 = 4M ⇒ M =0.6/ 4 = 0.15 Henry

But       L1 = 0.4 Henry

∴From Eq. (i)

0.8 = 0.4 + L2  + 2 × 0.15

∴          L2 = 0.1 Henry

 The coefficient of coupling

1397_Mutual inductance and coefficient of coupling1.png

Posted Date: 2/4/2013 4:57:27 AM | Location : United States

Related Discussions:- Mutual inductance and coefficient of coupling, Assignment Help, Ask Question on Mutual inductance and coefficient of coupling, Get Answer, Expert's Help, Mutual inductance and coefficient of coupling Discussions

Write discussion on Mutual inductance and coefficient of coupling
Your posts are moderated
Related Questions
Q. What are the Constructional Features of DC Machines? Adc generator ormotormay have asmany as four fieldwindings, depending on the type and size of the machine and the kind o

Q. Do as directed. a) Hexadecimal addition: 101 + ABC b) (43.25) 10-(89.75) 10 using 1's Complement c) Octal Subtraction 123-777 d) (123)6 + (435)6 = ( ? )6 e) ABC

Refer to the circuit shown below containing a two-port network. The two-port is a transconductance amplifier. The input port of the two-port is defined by terminals A and B. T

Q. (a) Draw the logic diagram of the enabled D latch using only NAND gates. (b) Complete the timing diagram of Figure (a) of theDlatchwhose block diagram and truth table are giv

The force between two wires 1 metre apart and each carrying 1 amp is 2 x 10 -7 Newtons when in a vacuum (or in practice, air).However, it is found experimentally that the force is

Q. Afixed-biasmethod is illustrated in Figure. Assuming ICBO to be small compared to I BQ and I CQ , find RB such that the operating point corresponds to I CQ = 14 mA, V CEQ = 7

Holding current The holding  current is  the value  of on state  current  required  to maintain  conduction once the  device  the device has  fully timed  on and  the  gate

Q. Basic working of optical coupler? The optical coupler is suitable for frequencies in the low megahertz range. The photodiode type shown above can handle only small currents;

Carry Flag CY is  reset  as explained  above.  ( in chapter 1 we have  sen in the 2 complement  methods of subtraction that  the carry  is set  when the result is positive. He