GATE ECE 2017 Set 2 | Transmission Lines Question 6 | Electromagnetics

GATE ECE 2017 Set 2

Numerical

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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

Your input ____

GATE ECE 2016 Set 1

MCQ (Single Correct Answer)

-0.3

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

$$\matrix{ {L = \,200\,\mu H/\,m,\,C = 0.1\,\,\mu F/\,m,\,} \cr {R = 50\,\,\Omega /m,\,G = 0.02\,S/m,} \cr } $$

$${\matrix{ {L = \,250\,\mu H/\,m,\,C = 0.1\,\,\mu F/\,m,\,} \cr {R = 100\,\,\Omega /m,\,G = 0.04\,S/m,} \cr } }$$

$${\matrix{ {L = \,200\,\mu H/\,m,\,C = 0.2\,\,\mu F/\,m,\,} \cr {R = 100\,\,\Omega /m,\,G = 0.02\,S/m,} \cr } }$$

$${\matrix{ {L = \,250\,\mu H/\,m,\,C = 0.2\,\,\mu F/\,m,\,} \cr {R = 50\,\,\Omega /m,\,G = 0.04\,S/m,} \cr } }$$

GATE ECE 2015 Set 3

MCQ (Single Correct Answer)

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A coaxial cable is made of two brass conductors. The spacing between the conductors is filled with Teflon $$\left( {{\varepsilon _r} = 2.1,\,\,\tan \,\,\delta = \,0} \right)$$. Which one of the following circuits can represent the lumped element model of a small piece of this cable having length $$\Delta \,\,z\,\,?$$

GATE ECE 2015 Set 3 Electromagnetics - Transmission Lines Question 41 English Option 1

GATE ECE 2015 Set 3 Electromagnetics - Transmission Lines Question 41 English Option 2

GATE ECE 2015 Set 3 Electromagnetics - Transmission Lines Question 41 English Option 3

GATE ECE 2015 Set 3 Electromagnetics - Transmission Lines Question 41 English Option 4

GATE ECE 2014 Set 3

MCQ (Single Correct Answer)

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In the following figure, the transmitter Tx sends a wideband modulated RF signal via a coaxial cable to the receiver Rx. The output impedance $${Z_T}$$ of Tx, the characteristic impedance $${Z_0}$$ of the cable and the input impedance $${Z_R}$$ of Rx are all real. GATE ECE 2014 Set 3 Electromagnetics - Transmission Lines Question 13 English

GATE ECE 2014 Set 3 Electromagnetics - Transmission Lines Question 13 English

Which one of the following statements is TRUE about the distortion of the received signal due to impedance mismatch?

The signal gets distorted if $${Z_R}\, \ne \,{Z_0}$$ , irrespective of the value of $${Z_T}$$

The signal gets distorted if $${Z_T}\, \ne \,{Z_0}$$, irrespective of the value of $${Z_R}$$

Signal distortion implies impedance mismatch at both ends: $${Z_T}\, \ne \,{Z_0}$$ and $${Z_R}\, \ne \,{Z_0}$$

Impedance mismatches do NOT result in signal distortion but reduce power transfer efficiency

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Representation of Continuous Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Discrete Time Signal Fourier Series Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Sampling Transmission of Signal Through Discrete Time Lti Systems Miscellaneous

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