Intrebari interviu BOSCH post tehnic 2008

1.  Un esantion de 16 biti mono este utilizat pentru digitalizarea vocii. Daca frecventa de esantionare este 8 kHz, atunci rata de transfer a bitilor este:
a) 128
b) 48
c) 34
d) 123

2. Care este relatia dintre amplificare si latimea de banda?
a) Independenta
b) Amplificarea scade pe masura ce latimea de banda scade
c) Amplificarea creste pe masura ce latimea de banda creste pana la un punct, dupa care constanta scade.

3. In decodarea ‘on chip’, memoria poate fi decodata in:
a) 2^n
b)2^n +1
c)2^n -1

4. Jumatate din adresa 0Xffffffff este
a) 77777777
b) 80000000
c) 7FFFFFFF

5. Ti se da un circuit, compus dintr-o sursa de tensiune electrica AC si o inductanta. Valoarea inductantei = 0.2mH,  voltaj AC =150 sin (1000t). Care este  curgerea  de curent prin circuit?

6. Ti se da un circuit RC cu o sursa de tensiune electrica AC. Care este expresia capacitantei pentru conditia de incarcare?

7. Un redresor semiconductor cu siliciu (SCR) este legat in serie pentru a obtine:
a) valoarea nominala a curentului mare
b) variatia tensiunii
c) valoare mare a tensiunii electrice

8. Care dintre urmatoarele este utilizata pentru punere sub tensiune la viteza mare?

a) BJT
b) MOSFET
c) IGBT
d) TRIAC

9. SCR este utilizat pentru:
a) A obtine un nivel dv/dt optim
b) Pentru valori nominale mari ale curentului
c) TPentru a obtine o tensiune electrica mare

10. Care este frecventa de rezonanta a unui circuit RLC (rezistor inductiv capacitiv) cu R= 4.7 komh, L= 2 micro Henry si c=30pf ?
a). 20.5 MHz
b). 2.65 KHz
c). 20.5 KHz
d). nici un raspuns de mai sus

11. Ti se da un circuit RLC, iar valorile R, L si C sunt cunoscute. Care este valoarea frecventei f?

12. #define A 10+10
main ()
{
int a;
a=A*A;
printf (“%d”, a);
}
a) 100
b) 200
c) 120
d) 400

13. 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

14. In memoria dinamica:
a) Disiparea puterii este mai mica decat cea a memoriei statice
b) Este nevoie de o baza de timp
c) Este necesar un Refresh
d) Toate de mai sus

15. Cati biti au integerii short, int si long?
a) 2,2,4
b) Depinde de calculator
c) 2,4,8

16. In conformitate cu legea lui Ohm, densitatea curentului electric este proportional cu:
a) curentul
b) di/ds
c) campul electromagnetic aplicat

17. Sistemul in care comunicarea apare in ambele sensuri, dar nu simultan, este:

a) Half simplex
b) Simplex
c) Half duplex
d) duplex

18. 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

19. Cum ai insera un cod deja scris intr-un program?

a) #read
b) #get
c) #include
d) #pre

20. Structura poate contine:
a) orice alta structura
b) orice alta structura, in afara de structura initiala
c) orice alta structura, in afara de structura initiala, indreptata catre aceasta
d) nici un raspuns de mai sus

21. Daca a > 4, b < -1 atunci care varianta este adevarata:
a)2a+b<0
b) 4a<3b
c) a>4b

22. Daca 20 de barbati pot efectua o munca in c/2 zile si 30 de femei efectueaza aceeasi munca in c/3 zile, atunci in cate zile vor termina munca cei 20 de barbati si cele 30 de femei, daca vor munci impreuna?
a)5c/6
b)c/6
c) 6c/5

23. Care este suprafata laterala a unui con cu diametrul bazei de 12 feet cu inaltimea de 24 feet?
a) 1320 square f.
b) 260 square f.
c) 96 square f.
d) nici un raspuns de mai sus

INTREBARI IN ENGLEZA

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) 34
d) 123

2. The relationship between 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

4. Half of address 0Xffffffff is
a) 77777777
b) 80000000
c) 7FFFFFFF

5. You are given 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?

6. You are given a RC circuit with AC voltage source. What is the expression for capacitance for charging condition?

7. SCRs are connected in series to get:
a) high current rating
b) voltage regulation
c) high v rating

8. Which one of the following is used for high speed power application?
a) BJT
b) MOSFET
c) IGBT
d) TRIAC

9. SCR is used for:
a) To achieve optimum dv/dt
b) For high current ratings
c) To achieve high voltage

10. 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

11. You are given one RLC circuit in which values of R, L and C were given. What is the value of frequency f?

12. #define A 10+10
main ()
{
int a;
a=A*A;
printf (“%d”, a);
}
a) 100
b) 200
c) 120
d) 400

13. 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

14. 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

15. Short, int and long integers have how many bytes?
a) 2,2,4
b) Machine dependant
c) 2,4,8

16. According to Ohm’s law the current density is proportional to:
a) current
b) di/ds
c) applied emf

17. 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

18. 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

19. How would you insert pre-written code into a current program?
a) #read
b) #get
c) #include
d) #pre

20. 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

21.  If a > 4, b < -1 then which of the following is true:
a)2a+b<0
b) 4a<3b
c) a>4b

22. If 20 men can do a work in c/2 days and 30 women can do the same work in c/3 days then how many days will take to complete the work when 20 men and 30 women work together?
a)5c/6
b)c/6
c) 6c/5

23. Find the lateral surface of a cone with diameter of base 12 feet and the latent height is 24 feet.
a) 1320square f.
b) 260 square f.
c) 96 square f.
d) none