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GATE ECE 2005 | Question: 76
Characteristic impedance of a transmission line is $50 \Omega$. Input impedance of the open-circuited line is $Z_{a^{-}}=100+j 150 \Omega$. When the transmission line is short- circuited, then value of the input impedance will be $50 \Omega$ $100+j 150 \Omega$ $7.69+j 11.54 \Omega$ $7.69-j 11.54 \Omega$

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82

GATE ECE 2005 | Question: 77
Two identical and parallel dipole antennas are kept apart by a distance of $\frac{\lambda}{4}$ in the H-plane. They are fed with equal currents but the right most antenna has a phase shift of $+90^{\circ}$. The radiation pattern is given as

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83

GATE ECE 2005 | Question: 78
Common Data Questions 78, 79, 80 Given, $r_{d}=20 \; \mathrm{k} \Omega, \mathrm{I}_{\mathrm{DSS}}=10 \mathrm{~mA}, \mathrm{~V}_{p}=-8 \mathrm{~V}$ $Z_1$ and $Z_0$ of the circuit are respectively $2 \; \mathrm{M} \Omega$ and $2 \; k \Omega$ $2 \; \mathrm{M} \Omega$ and $\frac{20}{11} \; k \Omega$ infinity and $2 \; k \Omega$ infinity and $\frac{20}{11} \; k \Omega$

admin asked in Others Sep 22, 2022

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84

GATE ECE 2005 | Question: 79
Common Data Questions 78, 79, 80 Given, $r_{d}=20 \; \mathrm{k} \Omega, \mathrm{I}_{\mathrm{DSS}}=10 \mathrm{~mA}, \mathrm{~V}_{p}=-8 \mathrm{~V}$ $\mathrm{I}_{\mathrm{D}}$ and $\mathrm{V}_{\mathrm{DS}}$ under $\mathrm{DC}$ ... $5.00 \mathrm{~V}$ $4.500 \mathrm{~mA}$ and $11.00 \mathrm{~V}$ $6.250 \mathrm{~mA}$ and $7.50 \mathrm{~V}$

admin asked in Others Sep 22, 2022

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85

GATE ECE 2005 | Question: 80
Common Data Questions 78, 79, 80 Given, $r_{d}=20 \; \mathrm{k} \Omega, \mathrm{I}_{\mathrm{DSS}}=10 \mathrm{~mA}, \mathrm{~V}_{p}=-8 \mathrm{~V}$ Transconductance in milli-Siemens (mS) and voltage gain of the amplifier are respectively $1.875 \; \mathrm{mS}$ and $3.41$ $1.875 \; \mathrm{mS}$ and - $3.41$ $3.3 \; \mathrm{mS}$ and $-6$ $3.3 \; \mathrm{mS}$ and $6$

admin asked in Others Sep 22, 2022

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86

GATE ECE 2005 | Question: 81a
Statement for Linked Answer Questions 81 a and 81 b: Consider an $8085$ microprocessor system The following program starts at location $0100 \mathrm{H}$ ... the program counter reaches $0109 \mathrm{H}$ is $20 \mathrm{H}$ $02 \mathrm{H}$ $00 \mathrm{H}$ $\mathrm{FFH}$

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87

GATE ECE 2005 | Question: 82a
Statement for Linked Answer Questions 82a and 82b: The dopen loop transfer function of a unity feedback system is given by $\mathrm{G}(s)=\frac{3 e^{-2}}{s(s+2)}$ The gain and phase crossover frequencies in $\mathrm{rad} / \mathrm{sec}$ are, respectively $0.632$ and $1.26$ $0.632$ and $0.485$ $0.485$ and $0.632$ $1.26 \mathrm{~mA}$ and $0.632 \mathrm{~V}$

admin asked in Others Sep 22, 2022

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88

GATE ECE 2005 | Question: 83a
Statement for Linked Answer Questions 83a and 83b: Asymmetric three-level midtread quantizer is to be designed assuming equiprobable occurence of all quantization levels. If the probability density function is divided into three regions as shown in the figure, the value of a in the figure is $\frac{1}{3}$ $\frac{2}{3}$ $\frac{1}{2}$ $\frac{1}{4}$

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89

GATE ECE 2005 | Question: 84a
Statement of Linked Answer Questions 84a and 84b: Voltage standing wave pattern in a lossless transmission line with characteristic impedance $50 \mathrm{~W}$ and a resistive load is shown in the figure. The value of the load resistance is $50 \; \Omega$ $200 \; \Omega$ $12.5 \; \Omega$ $0 \; \Omega 2$

admin asked in Others Sep 22, 2022

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90

GATE ECE 2005 | Question: 85a
Statement of Linked Answer Questions 85a and 85b A sequence $x(n)$ has non-zero values as shown in the figure The sequence $y(n)=\left\{x\left(\frac{n}{2}-1\right)\right.$ will be

admin asked in Others Sep 22, 2022

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