[Download PDF] ISRO Scientist or Engineer Electronics 2009 Paper with Solutions

Instructions

For the following questions answer them individually

Question 31

$$\alpha ,\beta$$ are the roots of the equation $$x^{2} + x + 1 = 0$$. Then $$\alpha^{3n} + \beta^{3n}$$ is

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Question 32

A point moving in the complex plane satisfies the following relation $$z^{2} + z^{^{2}} = 8$$, where $$z^$$ stands for the complex conjugate of z. The difference of the distances of the moving point from $$(2 \sqrt{2}, 0)$$ and $$(-2 \sqrt{2}, 0)$$ is

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Question 33

The greatest negative number which can be stored ina computer that has 8-bit word length and uses 2’s complementarithmeticis

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Question 34

Which of the following ADCs uses over sampling in its operation

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Question 35

A mealy state machine’s output depends on

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Question 36

The characteristic equation of the $$T - FF$$ is given by

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Question 37

Percentage modulation of an AM wave having a powercontent of 8 KW at carrier frequency and 2 KW in each of its side bandsis

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Question 38

Approximate equivalent noise temperature (deg. K) of an amplifier with a noise factor of 1.04 is

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Question 39

A differential amplifier is used in the input stage of Op-Ampsto achieve very high

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Question 40

Which two-port parameters are best suited for analyzing a series-shunt feedback circuit?

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CAT Content

ISRO Scientist or Engineer Electronics 2009

ISRO Scientist or Engineer Electronics 2009

$$\alpha ,\beta$$ are the roots of the equation $$x^{2} + x + 1 = 0$$. Then $$\alpha^{3n} + \beta^{3n}$$ is

A point moving in the complex plane satisfies the following relation $$z^{2} + z^{*^{2}} = 8$$, where $$z^*$$ stands for the complex conjugate of z. The difference of the distances of the moving point from $$(2 \sqrt{2}, 0)$$ and $$(-2 \sqrt{2}, 0)$$ is

The greatest negative number which can be stored ina computer that has 8-bit word length and uses 2’s complementarithmeticis

Which of the following ADCs uses over sampling in its operation

A mealy state machine’s output depends on

The characteristic equation of the $$T - FF$$ is given by

Percentage modulation of an AM wave having a powercontent of 8 KW at carrier frequency and 2 KW in each of its side bandsis

Approximate equivalent noise temperature (deg. K) of an amplifier with a noise factor of 1.04 is

A differential amplifier is used in the input stage of Op-Ampsto achieve very high

Which two-port parameters are best suited for analyzing a series-shunt feedback circuit?

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A point moving in the complex plane satisfies the following relation $$z^{2} + z^{^{2}} = 8$$, where $$z^$$ stands for the complex conjugate of z. The difference of the distances of the moving point from $$(2 \sqrt{2}, 0)$$ and $$(-2 \sqrt{2}, 0)$$ is