ISRO Scientist or Engineer Electronics 2014

Instructions

For the following questions answer them individually

ISRO Scientist or Engineer Electronics 2014 - Question 61


What is the turns ratio of the transformer needed to match a 1 kΩ source resistance to a 50 Ω load?

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ISRO Scientist or Engineer Electronics 2014 - Question 62


A satellite communication link has both uplink and downlink $$\frac{C}{N_o}$$, of 50dB-Hz. What would be overall link $$\frac{C}{N_o}$$?

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ISRO Scientist or Engineer Electronics 2014 - Question 63


Determine polarization loss factor for a circularly polarized signal upon reception by linearly polarized antenna

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ISRO Scientist or Engineer Electronics 2014 - Question 64


Which instruction of 8051 microcontroller is used for reading data from code memory?

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ISRO Scientist or Engineer Electronics 2014 - Question 65


If frequency is decreased 4 times, then skin depth of an Electromagnetic wave inside a conductor will be :

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ISRO Scientist or Engineer Electronics 2014 - Question 66


In the circuit shown below, the current through 10 Ω resistor is :

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ISRO Scientist or Engineer Electronics 2014 - Question 67


If two tones $$f_1$$ and $$f_2$$ are amplified by a non-linear amplifier, which frequency components would be present in output?

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ISRO Scientist or Engineer Electronics 2014 - Question 68


When a sinusoidal voltage wave drives a Schmitt Trigger, the output is a:

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ISRO Scientist or Engineer Electronics 2014 - Question 69


What will be content of Stack Pointer if following assembly code of 8051 microcontroller is executed immediately after reset?
PUSH 00h
POP OIh
POP 02h

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ISRO Scientist or Engineer Electronics 2014 - Question 70


Consider the sampling of the band-pass signal, whose spectrum is as shown below. What minimum sampling frequency would you use from the options given below, so as to avoid aliasing?

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