## KTU B.TECH S3 MODEL QUESTIONS NETWORK THEORY

**MODEL QUESTION PAPER Prepared by**** **__ktubtechquestions.com__

**THIRD SEMESTER B.TECH DEGREE EXAMINATION JANUARY 2017**

**EC 201 Network Theory**

**Time:** **3 Hrs Marks: 100**

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__PART A__

( **Answer any Three**)

- Using node analysis, determine ix

- Explain (i) Graph (ii) Tree (iii) Cut-set matrix
- In the network shown below, the load impedance is a complex quality. Find ZL for the maximum power transfer. Also find the amount of maximum power transferred to the load.

- a)What is a dual network?

b)**. **State superposition theorem.

__PART B__

( **Answer any Three**)

- Find the open circuit driving point impedance of the following ladder network.

- Obtain Laplace transform of a Gate pulse of width 2 sec and height 10V. Also prove initial value theorem.

7. For the circuit shown, obtain the driving point admittance Y 11 (s) in Laplace domain

8.Draw pole-zero plot and hence obtain V(t) for the following network function

__PART C__

( **Answer any Four**)

**9**. Find the h – parameter for the network. Check whether the network is

(i) Reciprocal (ii) Symmetric

- Show that the resonant frequency of an RLC circuit is the geometric mean of the lower and upper half power frequencies.

- For the coupled circuit, find the ratio of output voltage to source voltage.

V1=10V

- Define image and characteristic impedance. Obtain image impedance of a T network.

13.

a)Define Q factor & selectivity.

** b) **Explain dot rule for complex circuits.

- Write a short note on single tuned and double tuned circuits

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KTU B.TECH S3 MODEL QUESTIONS NETWORK THEORY

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