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BOARD DIPLOMA EXAMINATION, (C-20)
FEBRUARY/MARCH — 2022
DECE - THIRD SEMESTER EXAMINATION
NETWORK ANALYSIS
Time : 3 hours } | Tétat Marks : 80
v
PART—A 3x10=30
Instructions : (1) Answer all questions.
(2) Each question carries three marks.
(3) Answers should be:brief and straight to the point and shall
not exceed five simple sentences.
oO Define the terms mesh, node and loop in circuits,
@ ‘The voltage e, in fig. is
b ey a
[ Conta... K
fa
© Ita cirenit is at resonance then
(a) what in the value of voltage across Land C?
(b) what is the current in the circuit for series resonance?
ee {determine the Laplace transform of y = ett+ t.
(6) Write Laplace transforms for impulse function and ramp function.
nl 2
_9¢ Define time constant of RC circuit.
(Boo Draw ‘T-type attenuator.
PART—Bo Bx5=40 t
; el ae
Instructions : (1) Answer all questions.
(2) Bach question catries eight marks.
(2) Answers Should be comprehensive and criterion for
valuation is the content but not the length of the answer.
mH
rg % -
Solve for mesh currents using Cramer's rule for the given network (oR)
() Compute the power absorbed by 109 resistor in the circuit
shown below using node voltage analysis ;
12,~@@) Draw the Thevenin’s equivalent network for the given network
between B and D : f jcutt with LD = 0.5H has an instantancous
(Ay A series, RUE ein (600t +30")V_and an instantaneous curyent
Voltage in 600t)A.. Find the values of R and C- ‘At what frequency
i-1.5 8
{w,) will the circuit be resonant? 1
(OR)
ven the following parallel resonant circuit find the (i) resonant
frequency, fi) inductive reactance and capacitive reactance at
¥ ce frequency, fii) branch currents at resonant frequency.
i.
14. @ Aseries RL circuit with R = 25 ohm and L = 5 H has a constant
voltage V = 50 V applied at t= 0 by the closing of a switch. Find
i) equations for I(t), V,(t) and V(t) and (ii) current at t= 0.5 sec.
(OR)
(s+2)
inverse lapse transform of es eaiiezcis
s(sti(s+
% type attenuators with circuit dit
+ circuit diagram.
(oR)
[ Cont ete Ss Y
PART—C VOX1=10
Instractions : (1) Answer the flowing question.
@ The question carries ten marks,
(8) Answer should be comprehensive and criterion for valuation
is the content but not the length of the answer
16. Analyze the circuit. to determine the max power across Ria, What will
7 happen, if the two resistors are replaced by capacitors?
