ISRO Paper

Paper Type : Technical - Electronics
Test Date : 22 April 2007
Test Location : Tamil Sr. Sec. School,Delhi
Posted By : Archana Kumawat

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.

By,
Archana Kumawat

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