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ISRO PAPER - 22 APR 2007 - DELHI

Posted By : Jesi Rating : +35, -5
Hi Friends

I appeared for ISRO written examinatiom on 22 Apr 2007 for the post of Scientist Engineer.

Paper was totally technical. Questions which I remember 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.

Archana Kumawat

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