1
GATE ECE 2014 Set 1
MCQ (Single Correct Answer)
+2
-0.6
For a parallel plate transmission line, let v be the speed of propagation and Z be the characteristic impedance. Neglecting fringe effects, a redution of the spacing between the plates by a factor of two results in
A
halving of v and no change in Z
B
no changes in v and halving of Z
C
no change in both v and Z
D
halving of both v and Z
2
GATE ECE 2012
MCQ (Single Correct Answer)
+2
-0.6
A transmission line with a characteristic impedance of 100 $$\Omega $$ is used to match a 50 $$\Omega $$ section to a 200 $$\Omega $$ section. If the matching is to be done both at 429 MHz and 1 GHz, the tength of the transmission line can be approximately
A
82.5 cm
B
1.05 m
C
1.58 m
D
1.75 m
3
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
A transmission line of characteristic impedance 50 $$\Omega $$ is terminated in a load impedance $$Z_L$$. The VSWR of the line is measured as 5 and the first of the voltage naxima in the line is observed at a distance of $$\lambda /4$$ from the load. The value of $$Z_L$$ is
A
10 $$\Omega $$
B
250 $$\Omega $$
C
(19.23 + j 46.15) $$\Omega $$
D
(19.23 - j 46.15)$$\Omega $$
4
GATE ECE 2010
MCQ (Single Correct Answer)
+2
-0.6
In the circuit shown, all the transmission line sections are lossless. The Voltage Standing Wave Ration (VSWR) on the 60W line is GATE ECE 2010 Electromagnetics - Transmission Lines Question 21 English
A
1.00
B
1.64
C
2.50
D
3.00
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