ISRO ELECTRONICS PAPER DECEMBER 2017 : COMPLETE ANALYSIS EXPECTED CUT-OFF AND DETAILED SOLUTION

ISRO ELECTRONICS PAPER DECEMBER 2017

ISRO December 2017 is over now. This paper was much focused on the antenna and microwave along with signal and system, control systems, analog electronics and more questions from digital electronics.
Complete analysis of today's paper is discussed below along with the question paper  have a look.

EXPECTED CUTOFF WILL BE AROUND { 35-40 QUESTIONS I.E. AROUND 110-120 MARKS THE DIFFICULTY LEVEL WAS MODERATE }

ANALOG ELECTRONICS : (AROUND 60 MARKS)

one question to find capacitor value for given ripple voltage
Question on slew rate
Characteristics of schottky diode
Duty cycle of sample and hold circuit merged with opamp
Power conversion efficiency
Base current calculations
Eddy current loss
Positive feedback circuit
Rms value of figure
Mesfet noise characteristics
Scimitt trigger
Sensistor properties
Gain of opamp circuit
Motion of charge in PN junction
Chopper circuit
Rms out put voltage
Conduction period calculations
Small signal high frequency analysis
Phase of transfer function
Error in measurement

MATERIAL SCIENCE : (AROUND 12 MARKS)

NEEL temperature characteristics
Lattice constant
Relation between saturation magnetization and permiability

MICROWAVE & RADAR : (AROUND 30 MARKS)

QUESTION ON radar doppler shift
Cavity magnetron characteristics
TWT vs magnetron
Vacuum tubes
Impedance for lossless T junction
Power dissipated in TWTA
Opto coupler property
Range resolution of radar
Modes in reflex klystron
Received power calculations

NETWORKS : (AROUND : 6 MARKS)

TWO PORT NETWORK
To calculate impedance

CONTROL SYSTEMS : (AROUND 18 MARKS)

Time domain analysis
Steady state Error  analysis
Transient response
Routh hurwitz
Marginal stability
Gain margin phase margin calculation

SIGNAL SYSTEMS : (AROUND 18 MARKS)

CONVOLUTION Encoder properties
System response
Periodicity
Lti property
Auto correlation properties
Sampling theorem

COMMUNICATION SYSTEMS : (AROUND 12 MARKS)

Matched filter of a system
Auto correlation properties
Probability density function
Pcm bandwidth

DIGITAL ELECTRONICS :( AROUND 36 MARKS)

BCD CIRCUIT
function simplification
Shift register
Static ram properties
Multiplexer circuit
Frequency of a circuit
Avg op voltage of function operated with ex or gate
Multiplexer circuit simplyfy
Set up time
No of j k flipflop
Substractor circuit
Johnson counter

ELECTROMAGNETIC THEORY : (AROUND 39 MARKS)

Guide wavelength
Intrinsic impedance
Waveguide cutoff frequency calculation
Amplitude frequency graph analysis
Polarisation loss factor
Gain of antenna
Frequency of paraboloidal antenna
Directivity
Skin depth
Dielectric loss for ac signal
Directivity
Reflection properties
Directivity

MATHS : (AROUND : 9 MARKS)

Differential equation
Graph area
Eigenvalues

KEYS WILL BE UPDATED SOON....

QUESTION PAPER IS ATTACHED WITH THIS POST...

SOLUTION :

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