2. Find
Equivalent resistance of the following circuit. The value of each resistance is 15 Ω
3.
Find the value of C for resistive circuit.
4. The
switch in Figure has been in position A for a long time. At t=0.
the switch moves to B.
Determine v(t) for t > 0.
5. A
single phase 440V, 50Hz generator is connected to a load of 2+j4Ω through a
transmission line of 0.18+j.0.28 Ω. Find
Load voltage and
transmission
loss.
6. Find
V0 in the following circuit
7. The
output of an integrator having 100 KΩ resistance
and 0.1
F
F
Capacitance
is 10 cos (2π x
103) t. Find it’s input.
8.
Find the value of Z at maximum power transfer condition and also
find the average power.
9. A
500KVA,13200/480 V distribution transformer has four taps 2.5% on its primary
winding. What are the voltage ratios of
this transformer at each tapings ?
10.
Draw an equivalent circuit of transformer referred
to-secondary .
11.
For a semiconductor Diode, itfforward current
is l0 mA at Vd 0.3V,
then
what is the forward
current at Vd= 0.4V.
12. if
m(t)= 2 sin 2000πt +
4 sin 4000πt. then
(i) find minimum
sampling
frequency required to avoid aliasing (ii) if sampling frequency is 10KHz, draw
the spectrum of the sampled Signal.
13.
Abbreviate: VSAT. WiMAX. WLAN,ADSL, SONET, OFDMA
14.
Draw Critical Resistance and Shunt Resistance from following
O.C.C
curve.
15. Draw
a frequency modulated spectrum from following square and
triangular
wave.
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