ISRO Scientist or Engineer Electronics 2011

Instructions

For the following questions answer them individually

Question 21

Which of the following operator cannot be synthesized by VHDL synthesis tools

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Question 22

Which of the following statements with reference to a generic microprocessor is correct?

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Question 23

An electric iron designed for 110V AC supply was rated at 500W. It was put across a 220V supply. Assuming that at 110V it supplied 500W output(i.e no losses) at the new voltage it will supply

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Question 24

A very lossy, $$\frac{\lambda}{4}$$ long, 50 ohm transmission line is open circuited at the load end. The input impedance measured at the other end of the line is approximately.

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Question 25

For the 2N338 transistor, the manufacturer specifies P max =100mW at $$25^\circ C$$ free air temperature and the maximum junction temperature, Tj max = $$125^\circ  C$$. Its thermal resistance is

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Question 26

In a Class AB amplifier, the current flows through the active device for

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Question 27

Whichof the following is not true regarding a preemptive kernel

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Question 28

The solution of differential equation $$\frac{dy}{dx} = e^{x - y} + x^{2} e^{-y}$$ is

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Question 29

The intermediate frequency of a super-heterodyne receiver is 450 KHz. If it is tuned to 1200 KHz, the image frequency will be

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Question 30

The bandwidth of a ‘N’ bit binary coded PCM signal for modulating a signal having bandwidth of 'f' Hz is

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