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transmission line

GATE Electronics & Communication · Transmission Lines · 1987-2025

35
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69%
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29
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25
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2025 Q64

A 50 Ω lossless transmission line is terminated with a load Z_L of (50 – j75) Ω. If the average incident power on the line is 10 mW, then the average power delivered to the load (i...

mediumanswer key
2025 PYQ

A $50 \Omega$ lossless transmission line is terminated with a load $Z_L$ of $(50-j 75) \Omega$. If the average incident power on the line is 10 mW , then the average power delivere...

mediumelite explanation
2024 Q15

Consider a lossless transmission line terminated with a short circuit as shown in the figure below. As one moves towards the generator from the load, the normalized impedances $z_{...

medium
2024 Q58

A lossless transmission line with characteristic impedance Z₀ = 50 Ω is terminated with an unknown load. The magnitude of the reflection co-efficient is |Γ| = 0.6. As one moves tow...

medium
2024 PYQ

A lossless transmission line with characteristic impedance $Z_0 = 50 \Omega$ is terminated with an unknown load. The magnitude of the reflection coefficient is $|\Gamma| = 0.6$. As...

easyelite explanation
2023 Q51

The S-parameters of a two port network is given as $[S] = \begin{bmatrix} S_{11} & S_{12} \\ S_{21} & S_{22} \end{bmatrix}$ with reference to Z₀. Two lossless transmission line sec...

medium
2023 Q52

The standing wave ratio on a 50 Ω lossless transmission line terminated in an unknown load impedance is found to be 2.0. The distance between successive voltage minima is 30 cm and...

medium
2023 Q54

The following circuit(s) representing a lumped element equivalent of an infinitesimal section of a transmission line is/are

medium
2023 PYQ

The following circuit(s) representing a lumped element equivalent of an infinitesimal sectioin of a transmission line is/are

easyanswer keyelite explanation
2020 PYQ

A transmission line of length $3 \lambda / 4$ and having a characteristic impedance of $50 \Omega$ is terminated with a load of $400 \Omega$. The impedance (rounded off to two deci...

easyelite explanation
2017 PYQ

A two wire transmission line terminates in a television set. The VSWR measured on the line is 5.8. The percentage of power that is reflected from the television set is

easyelite explanation
2016 PYQ

The propagation constant of a lossy transmission line is (2 + j5) $${m^{ - 1}}$$ and its characteristic impedance is (50 + j0) $$\Omega $$ at $$\omega = \,{10^6}\,rad\,{S^{ - 1}}$$...

mediumanswer keyelite explanation
2015 PYQ

A coaxial cable is made of two brass conductors. The spacing between the conductors is filled with Teflon $$\left( {{\varepsilon _r} = 2.1,\,\,\tan \,\,\delta = \,0} \right)$$. Whi...

mediumanswer keyelite explanation
2014 PYQ

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 pl...

easyanswer keyelite explanation
2012 PYQ

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...

hardanswer keyelite explanation
2011 PYQ

A transmission line of characteristic impedance 50 $$\Omega $$ is terminated by a 50 $$\Omega $$ load. When excited by a sinusoidal voltage source at 10 GHz, the phase difference b...

mediumanswer keyelite explanation
2011 PYQ

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...

mediumanswer keyelite explanation
2010 PYQ

A transmission line has a characteristic impedance of 50 $$\Omega $$ and a resistance of 0.1 $$\Omega $$/m. If the line is distortionless, the attenuation constant (in Np/m) is

easyanswer keyelite explanation
2008 PYQ

One end of loss-less transmission line having the characteristic impedance of 75 $$\Omega $$ and length of 1 cm is short-ciruited. At 3 GHz, the input impedance at the other end of...

mediumanswer keyelite explanation
2005 PYQ

Characteristic impedance of a transmission line is 50$$\Omega $$. Input impedance of the open-circuited line is $${Z_{oc}} = 100\, + \,j\,\,150\Omega .$$ When the transmission line...

easyanswer keyelite explanation
2000 PYQ

The magnitudes of the open-circuit and short-circuit input impedances of a transmission line are 100$$\Omega \,$$ and 25$$\Omega \,$$ respectively. The characteristic impedance of...

easyanswer keyelite explanation
1999 PYQ

In a twin-wire transmission line in air, the adjacent voltage maxima are at 12.5 cm and 27.5. The operating frequency is

easyanswer keyelite explanation
1999 PYQ

Assuming perfect conductors of a transmission line, pure TEM propagation is NOT possible in

easyanswer keyelite explanation
1997 PYQ

A transmission line of 50$$\Omega $$ characteristic impedance is terminated with a 100 $$\Omega $$ resistance. The minimum impedance measured on the line is equal to

easyanswer keyelite explanation
1996 PYQ

A lossless transmission line having 50 $$\Omega $$ characteristic impedance and lenght $$\lambda /4$$ is short ciruited at one end and connected to an ideal voltage sourec of 1 V a...

easyanswer keyelite explanation
1996 PYQ

The capacitance per unit length and the characteristic impedance of a lossless transmission line are C and $$Z_0$$ respectively. The velocity of a traveling wave on the transmissio...

easyanswer keyelite explanation
1994 PYQ

A load impedance (200 + j0) $$\Omega $$ is to be matched to a 50$$\Omega $$ lossless transmission line by using a quarter wave line transformer (QWT). The characteristic impedance...

easyelite explanation
1994 PYQ

If a pure resistance load, when connected to a lossless 75-ohm line, produces a VSWR of 3 on the line, then the load impedance can only be 25 ohms.

easyanswer keyelite explanation
1993 PYQ

Consider a transmission line of characteristic impedance 50 ohm. Let it be terminated at one end by ( + j50) ohm. The VSWR produced by it in the transmission line will be

easyanswer keyelite explanation
1992 PYQ

A transmission line whose characteristic impedance is a pure resistance

easyanswer keyelite explanation
1991 PYQ

The input impedance of a short-circuited lossless transmission line guarter wave long is

easyanswer keyelite explanation
1990 PYQ

A 200 volt (r. m. s) generator having an internal resistance of 200 ohm is feeding a loss-less transmission line. The characteristic impedance and the length of the line are 200 oh...

hardelite explanation
1989 PYQ

A 50 ohm lossless transmission line has a pure reactance of (j100) ohms as its load. The VSWR in the line is :

easyanswer keyelite explanation
1988 PYQ

A two - wire transmission line of characteristic impedance $$Z_0$$ is connected to a load of impedance $${Z_L}({Z_L}\, \ne \,\,{Z_0})$$. Impedance matching cannot be achieved with

easyanswer keyelite explanation
1987 PYQ

A transmission line of pure resistive characteristic impedance is terminated with an unknown load. The measured value of VSWR on the line is equal to 2 and a voltage minimum point...

easyanswer keyelite explanation