ISRO PAPER ON 22nd APRIL AT DELHI
helo friends, i appeared for ISRO written examinatiom on 22april,2007 for the post of Scientist Engineer.
paper was totally technical.Questions which i remembered are as follows:-
1) output resistance of ideal OP AMP is:-
a) 0 b) 1 c) infinite d) very high ANS: a) 0
2) waveguide acts as:-
a) LPF b) HPF c) BPF d) BRF ANS: b) HPF
3) quality factor of series RLC ckt. increases with:-
a) increase in R b) decrease in R c) doesn,t depends on R d) none of these ANS: b) decrease in R.
4) energy stored in capacitor is given by:
a) CV b) 0.5CV c) CV2 d) 0.5CV2 ANS: d)
5) CMRR of an OP AMP is given as 80db and Ad is 20000.Value of Acm will be:-
a) 4 b) 8 c) 2 d) 1 ANS: c) 2
some basic questions were based upon digital electronics,ckt. analysis,antenna theory,zener doides.