Question
Download Solution PDFFor the three coupled coils in the figure shown below, calculate the total inductance:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
The total inductance for series connection is given by:
where, L = Self inductance
M = Mutual inductance
+ Sign is used in mutual inductance when current either enters or leaves from the dot in both the coils
- Sign is used in mutual inductance when current enters from a dot in one coil and leaves without a dot from another coil
Calculation
Given, L1 = 12 H, L2 = 16 H and L3 = 20 H
M1 = - 8 H, M2 = -10 and M3 = 4 H
Leq = 20 H
Additional Information The total inductance for parallel connection is given by:
- Sign is used in mutual inductance when current either enters or leaves from the dot in both the coils
+ Sign is used in mutual inductance when current enters from a dot in one coil and leaves without a dot from another coil
Last updated on Jul 1, 2025
-> SSC JE Electrical 2025 Notification is released on June 30 for the post of Junior Engineer Electrical, Civil & Mechanical.
-> There are a total 1340 No of vacancies have been announced. Categtory wise vacancy distribution will be announced later.
-> Applicants can fill out the SSC JE application form 2025 for Electrical Engineering from June 30 to July 21.
-> SSC JE EE 2025 paper 1 exam will be conducted from October 27 to 31.
-> Candidates with a degree/diploma in engineering are eligible for this post.
-> The selection process includes Paper I and Paper II online exams, followed by document verification.
-> Prepare for the exam using SSC JE EE Previous Year Papers.