ISRO Scientist or Engineer Electronics 2008

Instructions

For the following questions answer them individually

Question 1

The circuit shown in figure is a

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Question 2

In the op-amp circuit given in figure, the load current $$i_L$$ is

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Question 3

An op-amp has an offset voltage of 1 mV and is ideal in all other respects. If this op-amp is used in the circuit shown in figure, the output voltage will be

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Question 4

For the circuit shown above if $$g_m = 3 \times 10^{-3}$$ and $$R_s = 3000 Ω$$, thenn the approximate value of $$R_o$$ is

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Question 5

Where does the operating point of a class-B power amplifier lie?

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Question 6

The Laplace transform of $$e^{-2t}$$ is

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Question 7

The system with characteristic equation $$s^4 + 3s^3 + 6s^2 + 9s + 12 = 0$$

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Question 8

Compared to field effect photo transistors, bipolar photo transistors are

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Question 9

The output VI characteristics of an enhancement type MOSFET has

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Question 10

Which of the following relation is valid?
Where MTBF = Mean Time Between Failures
MITTF = Mean Time To Failures
MTTR = Mean Time To Repair

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