SECTION 1(TECHNICAL)
1. A 16 bit monosample is used for digitization of voice. If 8 kHz is the sampling rate then the rate at which bit is transferred is
a) 128 b) 48 c) d)
2. The relationship b/w Gain & Bandwidth?
a) Independent of each other
b) Gain decreases as bandwidth decreases
c) Gain increases as bandwidth increases till some extent after which stability decreases
3. In ON CHIP decoding memory can be decoded to
a) 2^n b)2^n +1 c)2^n -1 d) some other choice Ans: a
4. Half of address 0Xffffffff is
a) 77777777 b) 80000000 c) 7FFFFFFF d) some other choice
5. For a 4 bit succe D/A with 16v o/p the resolution is
a)10v b)1v c)1.6v d)16v Ans : b
6. A 20kva transformer at full load conditions have the coreless & cu loss are 250w&300w,To get max efficiency what will be the total loss in tr in w
a) 550 b) 500 c) 600 d) Data insufficient Ans : b
7. There was a circuit consisting of AC voltage source and one inductance. Inductance value=0.2mH AC voltage =150 sin (1000t).what is the current flowing in the circuit?
a) b) c ) d)
8. Power gain of an amplifier having i/p gain of 20W and output gain of 20mW is
a) 60 b) 25 c) 10 d) 0
9. There was a RC circuit given with AC voltage source. Expression for capacitance was asked for charging condition. Choices were somewhat like this: a) some value multiplied by exp (-t/T)
ans --c i= (Vs/R)exp(-t/ T)
10.SCR s are connected in series to get
a) high current rating b) voltage regulation c) high v rating d)some other
Ans: c
11. Which one of the following is used for high speed power application?
a) BJT b) MOSFET c) IGBT d) TRIAC
12. One question related with SCR timing dia
13. SCR is used for
a) To achieve optimum (or maximum ...not sure) dv/dt
b) For high current ratings
c) To achieve high voltage
d) Some other choice
14. State in which o/p collector current of transistor remains constant in spite of increase in base current is
a) Q point b) Saturation c) Cut off
15. what is the resonant frequency of parrel RLC circuit of R= 4.7 komh L= 2 micro Henry and c=30pf.
a). 20.5 MHz
b). 2.65 KHz
c). 20.5 KHz
d). none
16.for the parallel circuit (one figure is given) Is= 10mA. R1= 2R, R2=3R, R3= 4R. R is artritary
a). 3.076mA
b). 3.76mA
17 . Two ques on control sys like the sys will be stable when the roots are
a) real & +ve b) real & -ve c) d)
20 The ques on Niquest plot
21 0ne ques on root locus
22. One more question related with ADC like voltage is 8 volts. freqency 2 Mega hz. what is the converssion rate
23. Question related with serial in parallel out shift registerWhat is output sequence?
Ans..... 1010
24. Given one RLC circuit in which values of R, L and C were given. What is the value of frequency f?
25. #define A 10+10
main ()
{
int a;
a=A*A;
printf (%d, a);
}
a) 100 b) 200 c) 120 d) 400
ans : c
26. main(){
int n=0;
while(n>32767)
pf(%d,n);
n++
}
ans ; indefinite loop here ihe loop will continue again & again ie after 32767 the go to -32768
27. if (fun ())
{
X++;
}
X gets incremented if and only if
a) fun () returns 0
b) fun () return 1
c) fun () return -1
d) return a value other than 0 ans ; d
28. In dynamic memory
a) Power dissipation is less than that of static memory
b) Clock is needed
c) Refreshing is required
d) All the above
29. Short, int and long integers have how many bytes?
a)2,2,4 b) Machine dependant c)2,4,8 d) Some other choice ans : b
30. A (n) is -----------filter combination of
a) Passive b) Active c) AMPLIFIER d) BOOSTER
31. according to ohms law the current density is proportional to
a) current b) di/ds c) applied emf d)
32 Two more ques on gravity ie body is projected then find the time of fall and some physics ques
33. Structure comparison is done
a). yes
b) no
c) compiler dependent
d)
34. The system in which communication occurs in both ways but not simultaneously in both ways is
a) Half simplex b) Simplex c) Half duplex d) duplex
35. main ()
{
int a=5, b=6;
int i=0;
i=a>b? a:b;
printf (%d, i);
}
a) 0 b) 1 c) 6 d)5
36. int fun (char c)
{
int i;
static int y ;}
a) c, i are stored in stack and y stored in data segment
b)c stored in stack and i,y are stored in data segment
c) c is stored in text segment, y in data and i in stack
37. how would you insert pre-written code into a current program?
a) #read
b) #get
c) #include
d) #pre ans: c
38.structure may contain
a) any other structure
b) any other structure expect themselves
c) any other structure except themselves and pointed to themselves
d) none of the above
39 One ques from pointer declaration
Section II
40 If a>4,b
