ISRO Scientist or Engineer Electronics 2011

Instructions

For the following questions answer them individually

Question 71

In case of which of the following, an increase on the modulation index leads to increase in bandwidth

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Question 72

Four voice signals, each limited to 4 kHz and sampled at Nyquist rate, are converted into binary PCM signal using 256 quantisation levels. The bit transmission rate for the time division multiplexing signal will be

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Question 73

If a counter having 10 FFsis initially at 0, what count will it hold after 2060 pulses?

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Question 74

The output of a circular convolution performed on two signals $$x_{1}(n) = {\underline{2}, 1, 2, 1}$$ and $$x_{2}(n) = {\underline{1}, 2, 3, 4}$$ is

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Question 75

Whenusing a sequential code to design a combinational logic in VHDL,if complete truth table is not defined, the synthesis tool will implement a which is not required.

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Question 76

In whatorder the elements of a pushdownstack are accessed?

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Question 77

What is the value of C such that equivalent capacitance across x - y is 5F

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Question 78

A wave guide section in a microwave circuit will act as a

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Question 79

24V, 600mW Zeneris to be used for providing a 24V stabilized supply to a variable load. Assume that for proper Zener action, a minimum of 10 mA must flow through the Zener. If the input voltage is 32V, what would be the value of R and the maximum load current?

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Question 80

The value of x at which y has a minimum for $$y = x^{2} - 3x + 1$$ is

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