Some past questions of fpsc test

1. Total Questions were 100
1.one unit of electricity = 1000 watts usage per hour
2. filth = dirt
3. podium = An elevated platform
4. lavish = generous
5. horse = mane or moan
6. a a a a (a) power 3 = 4a power 3 or a power 7
7. capital of Saudi Arab is = Riyadh
8. shape of heart is = conical
9. Umpire Aleem Dar of Pakistan awarded how many times = 3 times
10. Governor, State Bank of Pakistan = Mr. Shahid H. Kardar
11. Pakistan’s Naseem becomes athlete fastest woman in = South Asia
12. Who holds power of selecting cricket player = chairman of board, prime minister etc?
13. which is not the member of saarc = Maldives, china , Bhutan , Sri Lanka
14. name of imam bukhari = Muhammad ibn Ismail
15. total number of surah in Quran pak = 114
16. The News of the World is stopped after 169 years = USA , Canada
17. In surah Bismillah is mentioned twice = Al Namal
18. Sural al-Tauba is the only surah in Holy Quran which does not start with Bismillah.
19. Longest surah is Al-Baqara
20. hajji gather at waquf e arfat on = 9 zulhaj
21. who accompanied holy prophet during hijrat = hazrat Abu Bakar
22. first mosque built by Holy Prophet SAWW = Masjid quba
23. Pakistan Ambassador to the United States = Husain Haqqani
24. first female Foreign Minister of Pakistan = Hina Rabbani Khar
25. the current Prime Minister of the United Kingdom = David William Donald Cameron
26. The Olympic games will be held in = 2012 London
27. peace noble prize winner 2011 = 3 males
28. Diamer-Bhasha Dam is in = River Indus in Gilgit-Baltistan, Pakistan
29. Diamer-Bhasha Dam electricity will produce = 4,500 megawatts of electricity
30. which is more elastic = plastic , paper , iron , rubber

2. 31. protein absorbed by = stomach
32. air blows due to = atmospheric pressure , temp , speed of air , direction of air
33. famous ghazal singer died recently = Jagjit Singh
34. Autobiography Book CONTROVERSIAL YOURS = Shoaib Akhtar
35. Bill Gates belongs to = Microsoft
36. Saifullah sword of God was the title of = Khalid ibn al-Walid
37. Nisab of zakkat on gold is = 7 1/2
38. Steve jobs is dead , was a founder of = apple
39. Afghan president recently killed = Burhanuddin Rabbani
40. Meaning of labial
41. Mr. x is 62 years old and after 3 years he will be 5 times of his son’s age. What is his
son’s age at present?
42. 6 numbers have average 9, if the 6th number is deducted the resulting average is 10.
What is the 6th number?
43 A table has length twice the length of its width. If the width is 100cm, what will be the
area of the face of the table?
44. 50 x 10^0 =
45. Who is patron in chief of Pakistan cricket team?
46. Where is india building kishan ganga dam?
47. 5 x 10^-5 =
48. Which number is greater? 0 -1 -25 -50
49. In a class 0f 25, 10boys play cricket, 5 boys play football, 4boys play hockey. 3boys play
both football and cricket and 2 boys play both football and hockey. How many boys are
there in class who play any game?
50. (.003)(.02) =
51. Dengue fever is caused due to?
52. Which disease will result from drinking contaminated water? Tb typhoid dengue
53. Rabies effect which system?? Nervous system
54. Pneumonia effects which system?
55. Disease spread by bitting of mad dog?
56. After 2nd may operatin, when all parties conference was held in Pakistan?
57. If length and width of a body is multiplied by its height, the result will be its??
58. Pakistani to get noble prize?
59. The water of flood __________ the area?? Inundated invaded besieged
60. Joule is unit of?

3. Some MCQs from FPSC Paper for Electrojic Engineer held on 01-02-2018
1. Which of the following consists of 2 SCRs
a) Diac b) UJT c) Triac d) None of these
2. Minimum current to keep SCR’s in on state
a) Latching Current b) Holding Current c) Forward Current d) None of these
3. In a 3-phase half control rectifier, the conduction angle of each diode is
a) 30 b) 60 c) 90 d) None of these
4. In a single phase full control rectifier during the overlap period, no. of SCR conduct
a) 2 b) 6 c) 8 d) None of these
5. In a single phase full control rectifier for load current I ripple free, average t hyristor
current is
a) 1/3I b) 1/2I c) 1/6I d) None of these
6. The PIV across each diode in case of three phase rectifier
a) 1.73Vm b) 1.41Vm c) 1.707vm d) None of these
7. For a three phase, 6 pulse diode rectifier, average output voltage is
a) 0.551Vm b) 0.954 Vm c) 1.653Vm d) None of these
8. Which of the following comprises snubber circuit across SCR
a) RC circuit b) C circuit c) R circuit d) None of these
9. Resistivity of metals is expressed in terms of
a) Micro ohm b) micro ohm / cm c) micro ohm-cm d) None of these
10. Constantan contains
a) Copper & Nickle
b) Copper & Tungstan
c) Silver & Tin
d) None of these
11. The material used in resistance thermometer has the highest melting point
a) Platinum b) Copper c) Nickle d) None of these
12. Which material can be used at temperature above 100Oc
a) Polythene b) Teflon c) Rubber d) None of these
13. At Neel temperature
a) Permeability is maximum b) Permeability is minimum c) Susceptibility is
maximum d) None of these
14. Bakelite is

4. a) Semiconductor b) Uncombustable c) Dielectric d) None of these
15. If clocked RS flip flop has R=0, S=0, then the output Q will be
a) 0 b) 1 c) Indeterminate d) None of these
16. The 2nd complement of 1011.01 will be
a) 0100.10 b) 0101.10 c) 0100.00 d) None of these
17. The hexadecimal number A6BC will be equal to in decimal
18. The decimal number 4285.625 will be equal to in octal number
19. Which of the following is not a OPAM IC (LM 741, LM747, LM340, None of these)
20. Which of the following is Comparator IC
21. The sensitivity of voltmeter if it has Im = 5 miliampere
22. Which of the following is the time base signal in CRO
a) HF Sinusoidal b) Triangular c) Linearly increasing Saw Tooth d) None of these
23. If a meter has range of 0-1 A and Im= 10 miliampere & Rm= 9 ohm the value of shunt
resistance will be
24. The bandwidth of operational amplifier is limited by
a) Open Loop Gain b) Slew Rate Specification c) I/P Resistance d) None of these
25. The capacity of lead acid cell is measured in
a) Ampere-Hour b) Watt c) Miliampere-hour d) None of These
26. AAA batteries has the value of voltage
a) 1.1V b) 1.2V c) 2V d) None of these
27. Nickle Cadmium battery is used for
a) Automobiles b) Boats c) Mobile Phones d) None of these
28. The unit of capacitance
29. Calculation of charge using Faraday’s Law
30. The transmission line after grid is called (Transmission, Distribution, HT, None)
31. Cable used for distribution purpose is called ( Low Voltage, High Voltage, 220V, None)
32. Strain gauge should have ( Resistance Cofficient, Gauge Factor, Knob, None)
33. Which of the following bridge is used for the measurement of capacitance & in
Some questions:
1. Gas used in power protection elements. (SF6)
2. Transformer can work efficiently?
3. How many diodes conduct during half cycle of bridge rectifier?
4. Op-Amp has two inputs and one output.
questions in my mind
dc to dc converter a)convert dc to dc b)dc equivalent of ac transformer c) step up or step
down dc d)all above right choice is d
when load on isolated generator increase than a) speed decrease
rectifier convert ac in pulsating dc
frequency of 60 hz full wave rectifier is 120 hz
one question is about converter's application i think option is all of above
hoe many nand gates are used for or gate right choice is 3
flip flop is used in a)counter b)register c) memory d)all right choice is d
thyrister turn off below holding current

5. 1. The Elecrochemical reactions are not reversible in case of,
a. Primary b. Secondary c. Both Primary and secondary d. None
2. Negetive terminal of dry cell is made of,
a. Carbon b. Zinc c. Lead d. None
3. The purpose of AC is to produce heat, Conductor are selected on the basis of,
a. Peak Value of Current b. Average value of current c. RMS value of current d. Any of
above
4. PIV of AC is
a. 1.414 b. 0.7 c. d.
5. Ohms Law for magnetic circuit can be stated as,
a. MMF=Flux x Reluctance
6. A unit impulse function is obtained on the differentiation of,
a. A unit ramp function b. A unit Step function c. A unit triplet d. A unit doublet
7. Transfer function is in
a. time domain b. Frequency domain c. d.
8. Which variety of copper has best conductivity,
a. Pure annealed copper b. Hard drawn copper c. Induction hardened copper d. Copper
containing traces of silicon
9. The electrical breakdown strength of a material depends upon,
a. Composition b. Thickness c. Moisture Content d. All of above
10. Which of the following is used for cable insulation,
a. Cross link XEP or PVC b. same c. same d. All of the above
11. Which of the following has maximum electrical conductivity,
a. Lead b. Copper c. Aluminium d. Stainless steel
12. Which of the following gaseous insulating material has highest electrical strength,
a. Air b. Hydrogen c. Carbon dioxide d. Sulphur hexaflouride
13. Breakdown in dielectric may be,
a. Electrical breakdown b. Thermal breakdown c. Elecrochemical breakdown d. All of above
14. Which one is correct,
a. E= -DelxV b. E= Del.V c. Del = E x V d. Del = E.V
15. Inside a hollow spherical conductor Electric field is,
a. Constant b. Zero c. Changes with magnitude of charge given to conductor d. changes
with distance from center of sphere
16. The Uniform electric field field lines and equipotentials,
a. Zero b. Infinity c. Orthognal d. Parallel
17. Whenever a conductor cuts magnetic flux an emf is induced in that conductor. Above
statement is due to,
a. Faraday's Law b. Joules Law c. Coulombs Law d. Gravitional Law
18. Coulumbs law is the same as ,
a. Faraday's Law b. Joules Law c. Coulombs Law d. Gravitional Law
19. In case of lightening struck which of the following are used,
a. Low Foot resisitor for tower b. Surge arrestor c. d. All of the above
20. IC Opam has
a. 1 input b. 1 output c. 2 inputs 1 output d. 1 input 2 outputs
21. For Signed Binary numbers which one is used,
a. 1's complement b. 2's complement c. d.
22. for MAX terms which two gates are used,
a. ANR-OR b. OR-AND c. NAND-OR d. XOR-NAND
23. For Highly capacitive circuit,
a. Active power=Apparent power b. Apparent power=Reactive power c. Apparent
power>Active power d. Active power >Apparent power
24. Output of RS flip is
25. Output of JK flip flop is

6. 26. Which of the following is true,
a,b,c Lithium cells are used in clocks and are non rechargeble d.
27. Output of Class A amplifer is
a. Distorted b. Same as output c. d.
28. A triac is a semiconductor device which acts a
a. 2 terminal unidirectional switch
b. 2 terminal bidirectional switch
c. 3 terminal bidirectional switch
d. 4 terminal multidirectional switch
29. For parallel operation the genrators are normally prefered as,
a. Series Generator b. Shunt Generator c. Compound Generator d. Series and Shunt
genrator
30. Hysteresis losses in a dc machine depends on,
a. Voulume and grade of iron b. maximum flux density c. frequency of magnetic reversals
d. All of above
31. Which of the following has highest proportion in DC machines
a. Armature copper losses b. field copper losses c. Hysteresis losses d. Eddy current
losses
32. Hysteresis losses varies as,
a. directly flux density b. invesrsly flux density c. d.
33. which of the following is minimised by laminating the core of a transformer,
a. Hysteresis losses b. Eddy current losses c. Heat losses d. Any of above
34. For a transformer the condition of maximum efficiency is,
a. Hysteresis loses=eddy current losses
b. Core losses=Hystersis loses
c. Copper losses = iron losses
d. total losses =2/3 copper losses
35. Eddy current losses in a T/F can be reduced by,
a. reducing the thickness of lamination
b. increasing the thickness of laminations
c. increasing the air gap in magnetic field
d. reducing the air gap in magnetic field
36. A short circuit test on T/F gives,
a. Copper losses at full load.
b. Copper losses at half load.
c. iron losses at any load.
d. Sum of copper and iron losses.
37. PU impedance of the T/F is,
a. greater than the primary side
b. Less than the secondary side
c. Primary and seconday impedance is same
d. None of the above
38. Polar dielectrics are normally used for,
a. High frequencies b. Microwaves c. DC and power fequencies d. None of the above
39. Switching surge is
a. High voltage AC b. High voltage DC c. Short duration transient voltage d.
hyperbollically dying volatage.
40. Impulse testing of a T/F is done to,
a. Bushings to withstand vibrations b. Insulation to withstand transient voltages c.
windings to withstand voltage fluctuations d. All of above
41. Impulse voltages are characterized by,
a. Peak Value b. Polarity c. time of half the peak value d. All of above
42. Paschen's law is associated with,

7. a. Ionization b. Breakdown voltage c. Thermal radiations d. None of above
43. frequency of 60 hz full wave rectifier is
a. 30Hz b. 60Hz c. 120Hz d. 0
44. Damping torque in instruments is genrally produced,
a. Pneuamatically b. Electromagnetically c. Electrostatically d. by fluid reaction
45. The pointer of instrument once deflected returns to zero position when the current is
removed due to,
a. Action of gravity b. Mass of pointer c. Controlling torque d. Damping torque
46. The deflecting torque in instrument is produced,
a. Magnetically b. Electrostatically c. Thermally d. Any of the above
47. A bridge used to measure the dielectric loss of an insulator is,
a. Anderson's bridge b. Wien's bridge c. Schearing bridge d. Any of above
48. The thyristor is turned off when the anode current falls below the,
a. Forward current b. Latching current c. Holding current d. Breakover current
49. In thyristor angle of conduction is changed by
a. Anode voltage b. gate current c. forward current d. anode current
50. in thyristor dv/dt protection is achieved through the use of
a.L accross thyristor b. R accross thyristor c. RC accross thyristor d. RL accross thyristor
51. in thyristor di/dt protection is achieved through the use of
a. L in series with thyristor b. R in series with thyristor c. RC in series with thyristor d. RL
in series with thyristor
52. Output waveform of signal can be seen on
a. function genrator b. Oscilloscope c. d.
53. flip flop is used in
a)counter b)register c) memory d) all right choice
54. hoe many nand gates are used for or gate right
a. 3 b. 4 c.5 d. 5
55. when load on isolated generator increases and power to the prime mover is cut off
a) generator slow down b. Genratot speed up c. d.
56. rectifier convert ac in pulsating dc
57. How many diodes conduct during half cycle of bridge rectifier?
a. 1 b. 2 c. 3 d. 4
58. Universal gate is
a. AND gate b. OR gate c. NAND gate d. XOR gate
59 D-flip flop is ???
two diodes conducts during half cycle of bridge rectifier
integrator has capacitor feedback
comparator has positive feedback
jk flipflop toggle at 1 1 logic input
d flip flop also called delay flip flop (not sure)