SRM University 2007 B.Tech Computer Science and Engineering BANK : - Question Paper

17 Find the Thevenin’s equivalent circuit across AB.

18 Determine Norton’s equivalent circuit for the provided circuit

19 Verify the reciprocity theorem for the provided circuit.

20 Replace the provided network by a single current source in parallel with a resistance (Hint use superposition theorem & Norton’s theorem technique)

UNIT – IV :

Part – A
1. Define coupled circuits and state a few coupling methods
2. Define mutual impedance in conductive coupling
3. Write the significance of dot rule in coupled circuits
4. Define self and mutual inductance
5. Write the formula & significance of co-efficient of coupling
6. Write the equivalent impedance formula for series and parallel coupled circuits
7. What are the kinds and applications of tuned circuits
8. What are single tuned circuits?
9. What are double tuned circuits
10. Define reluctance & magnetic field strength
11. Define leakage flux and leakage factor
12. What is fringing in magnetic circuits
13. Define critical coupling
14. How to achieve critical coupling?
15. What are over coupled circuits? And how they will react under this conditions?
16. Write the applications of single tuned circuits?
17. Write the applications of double tuned circuits
18. Two coils of inductances 8H and 7H are connected in series. The co-efficient of coupling ranging from the two coils is 0.5 obtain the equivalent inductance (for both aiding & opposing conditions).
19. Draw the frequency response curve of a single tuned coupled circuit
20. Draw the frequency response curve of double tuned coupled circuit
21. A primary coil having an inductance of 100?H is connected in series with a secondary coil of 240?H and the total inductance of the combination is measured as 146?H. Determine the co-efficient of coupling.
22. Two coils of inductance four and six henrys are connected in parallel. If their mutual inductance is 3H. Calculate, the equivalent impedance of the combination, if
(i) mutual inductance assist the self inductance
(ii) Mutual inductance opposes the self inductance

23. Two coils connected in series have an equivalent inductance of 0.5H when connected in aiding and an equivalent inductance of 0.2H when they connected in opposing. compute the mutual inductance of the coil.
24. Define flux density
25. State the condition for resonance and write the formula for resonance frequency of an RLC series circuit.
26. Write expression for co-efficient of critical coupling.
27. Two indictively coupled coils have self inductances L1 = 50mH and l2 = 200mH. If the co-efficient of coupling is 0.5 (i) obtain the value of mutual inductance ranging from the coils.

Earning:   Approval pending.