ISRO Scientist or Engineer Electronics 2013

Instructions

For the following questions answer them individually

ISRO Scientist or Engineer Electronics 2013 - Question 11


Two ideal quantizers A and B have following specifications :
A: 5 bit Quantizer with input dynamic range of -1V to +1V with Q1 as quantization noise power
B: 8 bit Quantizer with input dynamic range of -0.5V to +0.5V with Q2 as quantization noise power.
Then Q1/Q2 will be

ISRO Scientist or Engineer Electronics 2013 - Question 12


The divergence of magnetic field intensity is

ISRO Scientist or Engineer Electronics 2013 - Question 13


A UART is configured to transmit 8 bit data, 1 start bit and 1 stop bit. The serial data output is observed on oscilloscope, which looks like a square wave with frequency of 9600 Hz. Whatis the baud rate and transmitted data?

ISRO Scientist or Engineer Electronics 2013 - Question 14


A transmission line having characteristic impedance of 50ohms has to deliver 1OKW power at 100KHz to a load. Maximum permissible value of rms current anywhere along the line is 20A. Whatis the maximum VSWR that can be tolerated on this line?

ISRO Scientist or Engineer Electronics 2013 - Question 15


Routh Hurwitz criterion is used to determine

ISRO Scientist or Engineer Electronics 2013 - Question 16


The decoding circuit shown in the figure is has been used to generate active low chip select signal of memory interfaced to 8 bit microprocessor with 16 bit address bus. What is address range and size of memory?

ISRO Scientist or Engineer Electronics 2013 - Question 17


If the waveguide cross-section of a square waveguide with TE11 propagation mode isgradually deformed into a circle, then the corresponding circular waveguide mode will be:

ISRO Scientist or Engineer Electronics 2013 - Question 18


What could be the output current rating of following shunt regulator?

ISRO Scientist or Engineer Electronics 2013 - Question 19


An FM-CW (Frequency Modulated - Continuous Wave) Radar is essentially

ISRO Scientist or Engineer Electronics 2013 - Question 20


The flux in a magnetic coreis sinusoidally varying at 200 Hz. The maximum flux density is 2 Tesla and eddy current loss is 15 W.If the frequency is raised to 400 Hz and maximum flux density reduced to 1 Tesla, the eddy current loss will

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