PART A – (10 x 2 = 10 Marks)
1.
Define
wavelength and velocity of wave.
2.
What
is frequency distortion?
3.
Define
reflection coefficient.
4.
Mention
standing wave ratio in terms of the reflection coefficient.
5.
What
is chacteristic impedance?
6.
Define
propagation constant.
7.
What
is meant by waveform distortion?
8.
Give
properties of infinite line.
9.
What
is phase distortion?
10. Calculate the characteristics
impedance of a transmission line if the following measurements have been made
on the line Zoc = 550ے-60oΩ and Zsc = 500ے30oΩ.
PART B – (5 x 16= 80 Marks)
11. Explain
and derive the expression for general solution of transmission line equation.(16)
12. a)Explain
different types of loading. (8)
b) A generator of 1 V, 1000Hz supplies power to a
100 km open wire line terminated in Zo and having following
parameters R= 10.4 ohm per km, g=0.8x10-6mho per km, L=0.00367
Hentry per km, C=0.00835μFperkm calculate Zo,α,β,λ,v .Also find the
received power.(8)
13. a)Explain in detail about the wave form
distortion and also derive the condition for
distortion less line.(10)
b) Derive the expression for input
impedance of open and short circuited lines.(6)
14. a) Discuss the various parameters of
open wire and co-axial lines at radio frequency.(10)
b)Obtain an expression for voltage and
current on a dissipation less line(6)
15. a)Derive the expression for power and
impedance measurement on lines.(12)
b) A lossless line has a characteristic
impedance of 400 ohm. Determine the standing wave ratio if the receving eng
impedance is 800+j0.0 ohm. (4)
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