Cabinet Secretariate Research Officer EXAM-21/8/11(Based on candidate experience)
paper consist of two section:
PART A: "Computer knowledge" carry 15 questions & 20 Marks (1 to 5 carry 2 marks & 6_15 carry 1 marks)
PART B: "Electronics" [50 qobjective type question carry 1 marks & 10 subjective question carry 3 marks each] total 80 marks
PART A:
*******
1. Which email components are used to forward mail between servers?
ANS:MTA (Mail Transfer Agent) and SMTP (Simple Mail Transfer Protocol).
2. default subnet mask of Class C network is
Ans: 255.255.255.0
3. to store 1 bit of data
ANS: Flip flop
4. to resolve window net BIOS names to
ANS: LM HOST FILE & DNS
5.POST---------power on self test
6. urgent pointer is a ------I/O register (not sure)
7. you wish to make diskette bootable from "C" prompt, you type
a) sys a:
b) boot c:
c) sys boot a:
d) boot/a
8. void main
{
int const*P=5;
printf("%d",++(*P));
}
a) 10
b) 25
c) Syntex error
9. to resolve window netbios names to Ip
10. there are 12 address line & 8 data line . the orgaisation & capacity is
Organisation: 12 X 8
capacity: 12Kb (not sure)
11.SIMD
12. ARP is used for--------finding IP address of default gateway
13. memory is paged out to hard drive is known as--------virtual memory
14. which of the following is tru abt oracle
a) delete is a DDL command & can be rolled back whereas TRUNCATE is a DML Command & Can't Rolled back
b) delete is a DML command & can be rolled back whereas TRUNCATE is a DDL Command & Can't Rolled back
PART B:
********* SUBJECTIVE QUESTION
1. a 40 milli ampere current flows from 0.4 microfarad capacitor connected in series with resistor with 40 volt
AC supply applied to it. find impedance of circuit
ANS: 1 Killo-ohm
2. series parallel combination of capacitor find C
ANS: 32/23 Micro farad
3. calculate capacitance value if chage of 1500 micro Coloumb with voltage of 25 Volt
ANS: 60 micro farad
4. a resistor of 220 ohm, capacitor of 0.47 microfarad & inductance of 25 mH is connected in series with 20 V,800 Hz supply
Calculate voltage accros capacitor
ANS: 1.9 volt
5. if height of TX antenna is 100 ft & height of RX antenna is 20 ft. finf range of communication
ANS: use 2[SQRT of ht + SQRT of hr]
6. find resistance if power os 5 W & voltage is 12 volt
7. find lenght of dipole
Objective question
******************
1. Audio frequency range-------20-20KHz
2. if Ib=100 mA & gain is 30 find Ic---------3A
3. if line frequncy is 60 Hz, the o/p freq of bridge rectifier is
4. an ideal voltage source has ---zero internal resistance
5. an ideal current source has ---infinite internal resistance
6.
A B Y
0 0 1
0 1 1
1 0 1
1 1 1 ANS: NAND GATE
7. Diode is-----Bipolar [Schottky diode is unipolar]
8. at absolute zero temperature intrinsic semiconductor has
9. If a conductor cuts one weber of flux in one second the EMF induced will be one volt.
10.if E= 120< 0 and Z=50 <40 find E/Z 11. length of half wave dipole at 300 MHz 12. center freq of BPF is always known as--------------------(-3dB freq) 13. voltmeter measure sinewave of 500 mV, avg power is ---318.5 mV 14. colour coding 220 ohm 5%-------------------------red red black gold 15. push pull always use------------------------class B 16. the BW of Class C decrese----------------------------when Q increase 17. if load power is 3 mW then DC power is a) 0 b) 2% c) 20% 18. a darlington has --------------------high current gain 19. CMOS use-----------------------complementry E MOSFET 20. Advantage of CMOS----------------------low power consumption 21. most power FEt are-----------------------Digital computer 22. SCR is a _---------------------------four layer device 23. if power gain is double then decible power gain is -------------increase by 10 dB 24. wein Bridge use for--------------------------Low freq 25. O/P of 555 timer--------------------------------rectengular wave 26. The function of AGC is 27. the thermal conductivity of rod depends on a) area b) length c) mass d) material of Rod
PART A:
*******
1. Which email components are used to forward mail between servers?
ANS:MTA (Mail Transfer Agent) and SMTP (Simple Mail Transfer Protocol).
2. default subnet mask of Class C network is
Ans: 255.255.255.0
3. to store 1 bit of data
ANS: Flip flop
4. to resolve window net BIOS names to
ANS: LM HOST FILE & DNS
5.POST---------power on self test
6. urgent pointer is a ------I/O register (not sure)
7. you wish to make diskette bootable from "C" prompt, you type
a) sys a:
b) boot c:
c) sys boot a:
d) boot/a
8. void main
{
int const*P=5;
printf("%d",++(*P));
}
a) 10
b) 25
c) Syntex error
9. to resolve window netbios names to Ip
10. there are 12 address line & 8 data line . the orgaisation & capacity is
Organisation: 12 X 8
capacity: 12Kb (not sure)
11.SIMD
12. ARP is used for--------finding IP address of default gateway
13. memory is paged out to hard drive is known as--------virtual memory
14. which of the following is tru abt oracle
a) delete is a DDL command & can be rolled back whereas TRUNCATE is a DML Command & Can't Rolled back
b) delete is a DML command & can be rolled back whereas TRUNCATE is a DDL Command & Can't Rolled back
PART B:
********* SUBJECTIVE QUESTION
1. a 40 milli ampere current flows from 0.4 microfarad capacitor connected in series with resistor with 40 volt
AC supply applied to it. find impedance of circuit
ANS: 1 Killo-ohm
2. series parallel combination of capacitor find C
ANS: 32/23 Micro farad
3. calculate capacitance value if chage of 1500 micro Coloumb with voltage of 25 Volt
ANS: 60 micro farad
4. a resistor of 220 ohm, capacitor of 0.47 microfarad & inductance of 25 mH is connected in series with 20 V,800 Hz supply
Calculate voltage accros capacitor
ANS: 1.9 volt
5. if height of TX antenna is 100 ft & height of RX antenna is 20 ft. finf range of communication
ANS: use 2[SQRT of ht + SQRT of hr]
6. find resistance if power os 5 W & voltage is 12 volt
7. find lenght of dipole
Objective question
******************
1. Audio frequency range-------20-20KHz
2. if Ib=100 mA & gain is 30 find Ic---------3A
3. if line frequncy is 60 Hz, the o/p freq of bridge rectifier is
4. an ideal voltage source has ---zero internal resistance
5. an ideal current source has ---infinite internal resistance
6.
A B Y
0 0 1
0 1 1
1 0 1
1 1 1 ANS: NAND GATE
7. Diode is-----Bipolar [Schottky diode is unipolar]
8. at absolute zero temperature intrinsic semiconductor has
9. If a conductor cuts one weber of flux in one second the EMF induced will be one volt.
10.if E= 120< 0 and Z=50 <40 find E/Z 11. length of half wave dipole at 300 MHz 12. center freq of BPF is always known as--------------------(-3dB freq) 13. voltmeter measure sinewave of 500 mV, avg power is ---318.5 mV 14. colour coding 220 ohm 5%-------------------------red red black gold 15. push pull always use------------------------class B 16. the BW of Class C decrese----------------------------when Q increase 17. if load power is 3 mW then DC power is a) 0 b) 2% c) 20% 18. a darlington has --------------------high current gain 19. CMOS use-----------------------complementry E MOSFET 20. Advantage of CMOS----------------------low power consumption 21. most power FEt are-----------------------Digital computer 22. SCR is a _---------------------------four layer device 23. if power gain is double then decible power gain is -------------increase by 10 dB 24. wein Bridge use for--------------------------Low freq 25. O/P of 555 timer--------------------------------rectengular wave 26. The function of AGC is 27. the thermal conductivity of rod depends on a) area b) length c) mass d) material of Rod
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