Electrical Engineering - Transformers - Discussion

Discussion Forum : Transformers - General Questions (Q.No. 8)
8.
The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is
2 mH
2 H
4 H
8 H
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
39 comments Page 3 of 4.

V N Bhoyar said:   1 decade ago
M = k sq. root of L1*L2.

Shyama Sundar jena said:   1 decade ago
M = K*^1/2(L1*L2).

So M = 0.65*3.15.

= approx 2micro H

Suyog Shrivastava said:   1 decade ago
According to coefficient of coupling,

K = M/sqrt(L1*L2).

where ,

M = K*sqrt(L1*L2).

M = 0.65*sqrt(5*10).

M = 0.65*3.15.

M = 2.

Panduu said:   1 decade ago
k=coupling coefficient.
m=mutual inductance.
L1=inductance1.
L2=inductance2.

k=m/SQUARE ROOT OF(L1*L2).

Harika Gadde said:   1 decade ago
Formula is
Coupling Coefficient K=M/(sqrt(L1*L2))

Lakshmi Nagesh said:   1 decade ago
formula is perfect
M = K(sqrt(L1*L2))
M= 0.65(sqrt(2*10^-6 * 5* 10^-6))
= 0.65(sqrt(2*5))(sqrt(10^-12))
= 0.65(3.162)(10^-6)
= 2micro Henry.

S.ANJINEYULU NAIK said:   1 decade ago
Mutual inductance, M=k*sqrt(L1*L2)
=0.65*3.162
=2

Nidhi said:   1 decade ago
Coefficient of coupling k=M/(sqrt(L1*L2))
Therefore M=K*[sqrt(L1*L2)]

Santosh said:   1 decade ago
M=k*sqrt(L1*L2) this is according to the coupling coefficent

Siri said:   1 decade ago
K=M/sqrt(L1*L2)...............(According to coefficient of coupling)
i.e M=K*sqrt(L1*L2)
=.65*sqrt(5*10)
=.65*3.15
=2.055
Appox=2


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