Hi ans for the Q68 is D why reason we have asked the reflection coefficient at i/p & formula is (Zs - Zo)/(Zs + Zo) refer any book of
EMT e.g Saddiko, Hayat, N N Rao, it is not ( ZL - Zo)/(ZL + Zo) it is valid at load end




Ans for the Q 69 is C refer Constatine Balanis Ch.4 linear wire Antenna
ans B is the pattern for Horrizontal Antenna. concept behind the prob radiation of the dipole ant is perpendicular to the axis.



Q40 ans is A go for Sadera Smith diode Ch infect Q is taken from the book yaar simple draw the charactersitic of Zener with (Iz)knee Zero. total variation in the O/P
voltage is (Rz)/(RZ + RL) potential divider.


Q42 ans is B hey is previous Gate paper Q One can refer Taub & Schilling
a book of LOGIC FAMILY or one can also refer G K publisher fortunately
ans in GK is write usually i dont prefer GK.



Q46 ans is ether A or C. This because A2 Add line is not their as we r dropping one add line we will have ambguios add that is partial decoding
so all possible add inculding ambguios add Ans is C if we don't assume
ambiguity than ans is A


Q48 ans is B refer Bruce Carlson page 120 or 90 for the property of Hilbert transform.



Q51 ans can not be obtain by direct formula why haaaaa check casuality of the sys formula is valid only for the casual sys & it has ploe on 2 not on 1/2 & roc includes unit crl.




Q50 ans is B simple formula typical confusing.

Q53 ans B Kp=100(this u can get by solving ) Kd =.9 one can make guss
it can't be .09 as we r not realizing differentiator attenuator with zeta .5.


Q54 ans C or A both are giving stable trasnfer function.but as per me C
we don't desing compensator with non minimum phase function .

Q57 & Q59 havn't solved
but concept behind the problem i can give send mail



Q60 ans is A Check out the Carrier frequency
Ohhhhhhhh also its LSB scheme

Q61 C previous Gate paper Q



Q62 ans A i m confuse in frequency reuse factor if divied than ans is 40 that is B both r their but i have wrtn 200(A).


Q63 haven't solved yaar it is simplest Q of the Whole paper.ans A or B just refer formula form William LEE.



Another simple Q 64 ans C & Q65 Ans D formula based.



Q71 to Q75 not seen at all.



Q76 ans A Q 77 C simple.