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General - Other Sathyabhama, Chennai. - 22 April by ISRO

Details of General - Other Sathyabhama, Chennai. - 22 April by ISRO conducted by ISRO for job interview.
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ISRO PAPER ON 22nd APRIL AT CHENNAI

1.if diameter of antenna increase by 3,then gain of the antenna will be,
a.increase by 3
b.decrease by 3
c.no change in gain

2.more number of problem from zener diode... 
3.vector sum from plus two book.. 
4.simple problem from parallel and series connection of resistor...
5.plus two matrix problem   1    a    b+c

                                           1    b   a+c

                                           1    c    b+a

ans: zero
solve (D2+16)y=cos4x
ans:y= 4x+Bsin 4x+x/8 sin 4x

7.in half adder circuit... what are the gates used? 
8.conversion problem fron digital systems octal to binary
66.3(octal) to binary
9.formula for cos ax=? in terms of expo 
ans:   iax       -iax

         (e    + e         )/2
10.what is the o/p of 4:1 MUX? 
11.enegry stored in variable capacitor and constant voltage... 
ans : 2

0.5CV

12.WHICH OF THE FOLLOWING OSILLATOR HAVE HIGH ACCURACY?  refer all the osillator 
13.they given a circuit,which convert binary to...?

a. BCD
b.excess 3
c.gray
d.none of these

14.output impedance of ideal op-amp is...?   ans:  zero.
15.which one of the following is correct formula? choice are  simple formula like V=IR,F=eE,   etc...)
16. three problems from RLC ckt