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The condition that holds good in a distortionless transmission line is
A
R/L = G/C
B
RL = GC
C
L/R = C/G
D
RG/LC
Correct Answer:
R/L = G/C
For a distortionless transmission line, the primary constants are related by R/L = G/C.
Directions :
In each of the following questions a statement is given, followed by three conclusions. Give answer :
Statement :
The economic condition continues to be critical even after a good harvest season.
Assumptions :
I. The economic condition was not critical before the harvest season.
II. The economic condition could not have improved without a good harvest season.
III. The economic condition was expected to improve after a good harvest season.
A
Only I and II are implicit
B
Only II is implicit
C
Only II and III are implicit
D
Only III is implicit
E
Only I and III are implicit
If the transmission co-efficient T₁ of a transmission line is 1.333 and the characteristic impedance of the λ/4 transmission line used is 100Ω, then the characteristic impedance of the transmission line is:
A
50Ω
B
100Ω
C
70.71Ω
D
None of the mentioned
For a lossy transmission line, γ=0.02+j0.15 and is 20m long. The line is terminated with an impedance of a 400Ω. Then the input impedance of the transmission line given that the characteristic impedance of the transmission line is 156.13+j11.38Ω is:
A
100+j50 Ω
B
228+j36.8 Ω
C
50+36.8j Ω
D
none of the mentioned
A transmission line is distortionless if
A
RL = 1/GC
B
RL = GC
C
LG = RC
D
RG = LC
The characteristic impedance of the transmission line if the outer diameter and inner diameter of the transmission line is 20 mm and 10 mm respectively, given the intrinsic impedance of the medium is 377 Ω, then the characteristic impedance of the transmission line is:
A
41.58 Ω
B
50 Ω
C
377 Ω
D
None of the mentioned
If a λ/4 transmission line is 100Ω is used to match a transmission line to a load of 100Ω, then the characteristic impedance of the transmission line is:
A
100 Ω
B
50 Ω
C
70.71 Ω
D
200 Ω
If the characteristic impedance of a transmission line is 50 Ω, and the inductance of the transmission line being 25 mH/m, the capacitance of the lossy transmission line is:
A
1µF
B
10 µF
C
0.1 µF
D
50 µF
Good 'Y' is the substitute for good 'X' if
1. A fall in the price of good X leads to the fall in the marginal utility of good Y.
2. A fall in the price of good X leads to the fall in the quantity purchased of good Y. Select the correct answer
A
Only 1
B
Only 2
C
Both 1 and 2
D
Neither 1 nor 2
When the length of the transmission line is same as that of the wavelength, then which condition holds good?
A
Zin = Zo
B
Z = Zo
C
ZL = Zo
D
Zin = ZL
When a transmission line of characteristic impedance(50Ω) zₒ is matched to a load by a λ/4 transmission line of characteristic impedance 100Ω, then the transmission co efficient is:
A
1.5
B
0.5
C
1.333
D
2