APGENCO AE 2012 Question Paper,Solutions,Answers Held on 22 Jan 2012
APGENCO Trainee Assistant Engineer AE 2012 Question Papers,Solutions,Answers of Written Examination Held on 22nd January 2012. GREET (E) 2012 (APGENCO AE) Electrical Exam Paper Answers will be updated Soon after publishing Question Paper. Written Exam will be of Duration 2 hours Consists 100 Marks (70 Questions based on Core & 30 Questions on Aptitude).
APGENCO AE ELECTRICAL ELECTRONICS CIVIL MECHANICAL 2012 FINAL ANSWER KEY-DOWNLOAD
APGENCO Assistant Engineer AE 2012 Results new
APGENCO AE 2012 Electrical Answer Keys of Set-A,B,C,D by ACE Engineering Academy new
Check the Answers with your key, if there are any Wrong Answers please let me Know so that i can update the Key. As this is not an Official Key there may be Some Mistakes so please take it as a reference purpose .
Booklet-C Question Paper :
1. Transfer Function of a System in 1/(s+1)(s+2) the impulse response of the System is
A) e-2t – e-t B) e-2t + e-t C) e-t + e-2t D) e-t – e-2t
2. In a thermal power plant,ash is Collected in
A) Mills B) hoppers C) Bunkers D) Boiler
3. The average life of neutrons after they decay is
A) 1 sec B) 10 sec C) 100 sec D) 1000 sec
4. The Operating time of instantaneous relay is
A) 0.001 sec B) 0.01 sec C) 0.1 sec D) 1 sec
6. Stringing chart is useful for
A) the design of tower B) the design of insulator String C) finding the Sag in the Conductor D) finding the distance between the towers
7. The Self GMD method is used to evaluate
A) inductance B) capacitance C) inductance and capacitance D) resistance
8. The velocity of travelling Wave through a cable of relative permitivity 36 is
A) 3 x 108 m/sec A) 2 x 108 m/sec A) 0.5 x 108 m/sec A) 108 m/sec
9. The Coefficient of reflection for current wave is
A) 1 B) 2 C) -1 D) 0
10. A relay has a rating of 5A, 2.2 sec IDMT and relay setting of 125% TMS =0.6. It is connected to a supply circuit through a C.T. 400/5 ratio. The Fault Current is 4000 A. The operating current of the relay is
A) 6.25 A B) 5A C) 8A D) 2.2 A
12. A single Phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would be
A) 0.52 B) 0.42 C) 0.62 D) 0.36
14. A Differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by
A) 1 B) 1/2 C) 2 D) 250
15. An amplifier has input power of 2 microwatts. The Power gain of the amplifier is 60 dB. The Output power will be
A) 2 milliwatts B) 6 microwatts C) 2 Watts D) 120 microwatts
16. The voltage gains of the amplifier with and without feedback are 20 and 100 respectively. The percentage of negative feedback would be
A) 40% B) 80% C) 4% D) 8%
17. For OPAMP in differential configuration, open loop gain is 100000, and differential input voltage is 2 μ V. Power supply for OPAMP is ± 12 V. Then Output voltage will be
A) + 12 V B) -12 V C) 0 V D) 2 μ V
18. A 3-stage ripple counter has Flipflop with propagation delay of 25 nsec and pulse width of strobe input 10 nsec. Then the maximum operating frequency at which counter operates reliably is
A) 16.67 MHz B) 17.6 MHz C) 12.67 MHz D) 11.76 MHz
19. The percent resolution of an 8-bit D/A converter is
A) 0.392 B) 1/256 C) 1/255 D) (A) and (B) both
20. The Diode used in a clipping circuit has Rf = 25Ω and Rr = 1 MΩ. The External resistor R is
A) 50 KΩ B) 5KΩ C) 1/25 MΩ D) 25 MΩ
21. Which circuit is used as amplitude comparator?
A) Bistable B) Monostable C) Astable D) Schmitt Trigger
23. An example of a bounded signal is
A) e-4t B) e2t C) t D) et sint
25. A Transfer function has a Second order denominator and constant gain in the numerator
A) the System has two zeros at the origin B) the system has two finite zeros C) the System has two zeros at infinity D) the System has one zero at infinity
26. A system is linear if and only if it satisfies
A) principle of Superposition B) principle of Homogeneity C) both (A) and (B) above D) neither (A) and (B) above
29. A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2Ω. It is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10A, is
A) 32 Ω B) 36 Ω C) 38 Ω D) 40 Ω
30. A transformer has maximum efficiency at 3/4 th of full load. The ratio of its iron loss (pi) and full load copper loss (Pc), is
A) 4/3 B) 16/9 C) 9/16 D) 3/4
33. A single phase fully controlled rectifier has an average output voltage of 200 V when alpha=0 . Its output voltage when alpha = 30o is approximately
A) 200 V B) 160 V C) 173 V D) 183 V
34. A 200 V dc-dc converter is turned ON for 30 μ sec and turned off for 10 μ sec. The output voltage will be
A) 200 V B) 150 V C) 175 V D) 120 V
35. In Single Pulse Modulation used in PWM Inverters, for eliminating third harmonic component in the output voltage , the pulse width should be
A) 600 B) 900 C) 1100 D) 1200
36. The Dynamic resistance of a p-n junction germanium diode at room temperature with current of 1 mA under forward biasing is
A) 100 Ω B) 13 mΩ C) 13 Ω D) 26 Ω
37. Thermal runway is not possible in FET because as temperature of FET increases
A) mobility increases B) mobility Decreases C) drain current decrease D) transconductance increases
38. The initial value of f(t), with transform F(s) = s+1/ (s+2)(s+3) is
A) 0 B) 1 C) ∞ D) 1/6
39. The two-port parameter h21 is called
A) open-circuit output admittance B) short-circuit input impedance C) open-circuit reverse voltage gain D) short-circuit forward current gain
41 . The impedance of a two-element series circuit is represented by (20-j10) Ω at a certain frequency. If the frequency is doubled, the new value of impedance is
A) (20-j5) Ω B) (40-j20) Ω C) (10-j10) Ω D) (20-j20) Ω
42. A unity feedback control system has forward-path transfer function G(s) = K/s(s+2) . If the design specification is that the steady-state error due to a unit ramp input is 0.05,the value of K allowed is
A) 20 B) 40 C) 10 D) 80
43. The transfer function of a system has the form G(s) = 200 (s+2)/s(s2+10s+100) . At very high frequencies the Bode gain curve has a slope of
A) -6 dB/octave B) -12 dB/octave C) 6 dB/octave D) 12 dB/octave
44. A Unity feed-back system has open-loop transfer function GH (s) = K/ s(s+4)(s+6) , It’s root locus plot intersects the jw axis at
A) ± j 2 B) ± j 4 C) ± j 8 D) does not intersect the jw axis
45. Auto reclosing used in case of
A) Lightning arrester B) bulk oil C.B C) air blast C.B D) minimum oil C.B
46. A transmission line has 1 P.U impedance on a base of 11 KV,100 MVA. on a base of 55KV, it will have a P.U impedance of
A) 1 P.U B) 0.2 P.U C) 0.02 P.U D) 0.1 P.U
47. A 50 Hz, 4 pole turboalternator rated at 20 MVA, 13.2 KV has an inertia constant H = 4 KW sec/KVA. The K.E Stored in the rotor at Synchronous speed is
A) 80 KJ B) 80 MJ C) 40 MJ D) 20 MJ
48. The inertia constants of two groups of machines which do not swing together are M1 and M2. The equivalent inertia constant is
A) M1 + M2 B) M1 – M2 if M1 > M2 C) √M1M2 D) M1 M2 / (M1 + M2)
50. A 36-slot, 4-pole, dc machine has a simplex lap winding with two conductors per slot. The back pitch and front pitch adopted could be respectively
A) 15,13 B) 19,17 C) 21,19 D) 23,21
53. Two Synchronous generators G1, G2 are operating in parallel and are equally sharing KVAR (lag) component of load. To shift part of KVAR from G2 to G1, while keeping terminal voltage fixed, the following action must be done
A) Raise If1 and lower If2 B) Lower If1 and raise If2 C) Lower If1 or raise If2 D) Raise If1 or lower If2
APTITUDE SECTION 30 Questions :
71. H1(x) = 1-x ,0<x<1
= 1, x ≥ 1
= 0, otherwise
H2(x) = -H1(x) for all x
H3(x) = H2(-x) for all x
H4(x) = -H3(x) for all x
How many of the following products are necessarily zero for every value of “x”?
H1(x) * H3(x) ; H3(x) * H2(x) ; H1(x) * H2(x)
A) 0 B) 1 C) 2 D) 3
73. The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is
A) 200 m B) 225 m C) 245 m D) 250 m
74. If “PAPER” is 11.20, “PENCIL” is 9.83, what will be the PEN ?
A) 12.80 B) 11.60 C) 1.66 D) 13.8
75. What is the sum of all numbers less than 100 that can be written as the sum of 9 consecutive positive integers?
A) 612 B) 630 C) 702 D) 504
78. X introduces Y saying: “He is the husband of the grand daughter of the father of myfather”. How is Y related to X ?
A) brother B) uncle C) co-brother D) brother-in-law
79. Ravi is 7 ranks ahead of Sumit in a class of 39. If Sumit’s rank is 17th from the last. What is Ravi’s rank from the start ?
A) 11 B) 15 C) 13 D) 9
80. In a certain code, ‘bi nie pie’ means “some good jokes”;; ‘nie bat lik’ means “some real stories”;; ‘pie lik tol’ means “many good stories”. Which word in the code means ‘jokes’ ?
A) nie B) pie C) lik D) bi
81. There are five bus stops. A,B,C,D,E at equal intervals. C is not the middle stop and A,E are not terminal stops. C comes twice as many stops before D in upward jpurney as B comes after A. D is the first stop in downward journey. The correct sequence of stops in the downward journey is
A) ABDCE B) CDAEB C) DACEB D) DEBAC
82. Five persons namely Yasin,Arafat,Rasheed,Ali and Rehman are to be seated in five out of the six seats numbered 1 to 6. The following table provides information about the serial numbers of the seats on which each of the mentioned friends can possibly sit.
| Names | Yasir | Arafat | Rasheed | Ali | Rehman |
| Seat No. | 1 | 2 or 3 | 2,3 or 4 | 4 or 5 | 5 or 6 |
If one of the seats numbered 2 or 4 is unocuupied. then the number of different ways five mentioned persons can be seated is
A) 1 B) 2 C) 3 D) 4
83. If (ABCD)a = D*a^0 + C*a^1 + B*a^2 + A*a^3
(8448)9/(2112)9=(y)3 then y is
A) 011 B ) 101 C) 110 D) 111
84. Two straight lines can divide a circular disk into a maximum of 4 parts. Likewise, into How many maximum parts can four straight lines divide a circular disk?
A) 11 B) 21 C) 31 D) 41
85. When the numerator of a fraction is increased by 7 and denominator is increased by 13, the resulting number is equivalent to the obrained when numerator decreased by 2 and denominator decreased by 11. The sum of the numerator and denominator is 24. Find the fraction
A) 1/23 B) 7/17 C) 11/13 D) 5/19
86. A test contains 50 questions. Each correct answer fetches 1 mark and wrong answer gets 1/2 mark is deducted. A candidate who wrote the test attempted all the questions and scored 41 marks. Find the number of questions he answered correctly?
A) 46 B) 42 C) 44 D) 48
87. ABC is a three digit number. The sum of its digits is 9. If each of BA and BC are two digit numbers such that BA=BC-3. How many values C can take ?
A) 16 B) 6 C) 26 D) 36
88. The sum of three digit number and numbers formed by reversing its digits is 989. The sum of its digits is 13. Find the middle digit
A) 9 B) 6 C) 4 D) 2
89. An observer 1.6 m tall is 20√3 away from a tower .The angle of elevation from his eye to the top of the tower is 300. The height of the tower is
A) 21.6 m B) 23.2 m C) 24.72 m D) 21.4 m
90. Identify the odd one
A) heart B) liver C) nose D) kidneys
91. 18, 10, 6, 4, 3, ?
A) 8 B) 4 C) 3.5 D) 2.5
92. Which makes the best comparison ?
TOMATO : MTOOTA : : 123412 : ?
A) 312214 B) 123456 C) 321124 D) 213314
93. My brother is standing 40m South-West of my sister.I am standing 40m South-East of my brither. I am in which direction of my sister?
A) South B) West C) East D) North-East
94. Find the next letters in series : BCZ, DEY, FGK,HIW,_________
A) JKL B) JKV C) JKU D) JKT
95. Find related word ; Conscience : wrong :: Police : _________
A) thief B) law C) discipline D) crime
96. A shopkeeper sells one transistor for Rs.840 at a gain of 20% and another for Rs.960 at a loss of 4%. His total loss or gain percent is
A) 5 15/17 % loss B) 5 15/17 % gain C) 6 2/3 % gain D) 6 2/3 % loss
97. A boatman goes 2Km against the current of the stream in 1 hour and goes 1Km along the current in 10min. How long will it take to go 5Km in stationary water ?
A) 40 Minutes B) 1 hour C) 1 hr 15 min D) 1 hr 30 min
98. In how many ways can the letters of the word LEADER can be arranged ?
A) 72 B) 144 C) 360 D) 720
99. One pipe can fill a tank three times as fast as another pipe. If together, the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in
A) 81 min B) 144 min C) 108 min D) 192 min
100. If log 27 = 1.431 , then the value of log 9 is
A) 0.934 B) 0.954 C) 0.945 D) 0.958
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128 Comments to “APGENCO AE 2012 Question Paper,Solutions,Answers Held on 22 Jan 2012”
set-c
1.D 2.B 3B 4A 5B 6C 7A 8C 9C 10A 11A 12A 13D 14D 15D 16B 17C 18B 19B 20A 21D 22C 24B 25B 26A 27B 28A 29D 30B 31B 32A 33C 34B 35B 36B 37D 38D 39B 40C 41D 42C 43B 44C 45A 46A 47B 48B 49C 50B 51D 52B 53C 54A 55B 56A 57B 58C 59A 60C 61A 62B 63A 64D 65A 66C 67A 68A 69A 70C
I found these answers by referring some books and websites
Read more: http://www.indianshout.com/apgenco-ae-2012-question-papersolutionsanswers-held-on-22-jan-2012/8234#ixzz1kYATb5M8
set c key provide someone
Hi
Key for all sets of AP Genco is released by Ace
the final key for APGENCO AE ELECTRICAL (SET C)
1. D 2. B 3. D 4. C { see CL.WADHWA page no:- 370 } 5. A 6. C 7. A 8. C 9. C 10. A
11. B 12. A 13. B 14. C 15. C 16. C 17. C 18. D 19. A 20. B
21. D 22. C 23. A 24. D 25. C 26. A {priciple of superposition=additivity+homoginity=linear system} 27. B 28. D 29. B 30. C
31. D 32. D {if pure inductive load 1microsec but RL is there SEE PS.BIMRA pgno:-78}
33. C 34. B 35. D 36. D{(n*VT)/ID 1*26mA/1mA=26OHM} 37. B 38. B 39. D 40. C
41. A { IF f inc. XC dec } 42. B 43. B 44. A {use RH method then we get 20Ssqure+64=0, them s=+/- j square root of 3.2, nearly = to +/-j2) 45. C 46. B { assume the base values are inceased by 5 times ie. 55KV and 500MVA, then 0.2PU } 47. B 48. D 49. C 50. B
51. B 52. D 53. A 54. C 55. A 56. B { B/W terinals } 57. B 58. D 59. D 60. B
61. A {2n-3} 62. A 63. B 64. A 65. D 66. A 67. A 68. A 69. D 70. C
71. A 72. B 73. C 74. B 75. D 76. B 77. C 78. D 79. B 80. D
81. D 82. 3 83. A 84. A 85. D 86. C 87. C 88. C 89. A 90. C
91. D 92. A 93. A 94. B 95. D 96. B 97. C{ 5km/4kmph=1(1/4)=1h15m} 98. C {6!/2!}
99. B 100. B
friends 99% this is the final key, if there is any mistakes plz put in this site.
thanks all the best
set c (electrical) apgenco
1.d 2. b 3.d 4.b 5.a 6.c 7.a 8.c 9.c 10.a 11.a 12.a 13.d 14.d 15.c 16.b 17.c 18 b 19.b 20.b 21.d 22.c 23.a 25.c 26.c 27.b 29.d 30.b 31.d 32.a 33.c 34. b 35. b 37.a/c 38.b 39.d 40. c 41.a 42. b 43.b 44.b/c 45.c 47.b 48.d 49.c 51.a 52.a 54.a 55.a 56.a 57.b 58.c 59.d 64.a 65.d 66.a
aptitude:
72.a 73.c 74.b 77.c 78.b 79.b 80. d 81.c/d 83. a 85.d 86.c 88.c 89.a 90.c 94.b 95.a 96.b 97.c 98.c/d 99.b 100.b
plz send apgenco ae ECE SET D KEY
key for set c
Set -c
19. The percent resolution of an 8-bit D/A converter is
A) 0.392 B) 1/256 C) 1/255 D) (A) and (B) both
solution:
persentage resolution= (1/2 to the power of 8)*100 = 0.391
so, option A will be the correct answer
hai this prathima.
can any please let me know the answers for the booklet- B(ELECTRICAL). as we for need the answers4 transco exam.
MECHANICAL KEY:-Set No-A=
1)A 2)D 3)B 4)D 5)B 6)C 7)C 8)C 9)B 10)B 11)C 12)D 13)C
14)C 15)B 16)D 17)B 18)A 19)- 20)B 21)C 22)D 23)A 24)B 25)C 26)B 27)D 28)D 29)C 30)C 31)- 32)B 33)A 34)D 35)- 36)B 37)C 38)D 39)B 40)A 41)C 42)- 43)- 44)A 45)C 46)A 47)B 48)A 49)D 50)D 51)C 52)C 53)A 54)B 55)D 56)- 57)- 58)A 59)C 60)B 61)A 62)- 63)A 64)- 65)C 66)D 67)B 68)B 69)A 70)B 71)C 72)D 73)C 74)A 75)B 76)A 77)B 78)D 79)C 80)B 81)A 82)A 83)C 84)B 85)A 86)B 87)D 88)B 89)D 90)B 91)B 92)B 93)C 94)A 95)B 96)A 97)C 98)A 99)C 100)C
Key is prepared with utmost care. For any clarifications or for solutions please mail me.
please send key paper for B
Wat abt Electronics Paper yar!!!!!!
plse send me aptiitude answer key 2 me …..
frm 70 to 100 bits answers…
can any provide the key for set C Electrical plzzzzzzzzzz
its 6!/2! bcoz two E’s r der…
hi
plz send me the answer key of set B
plz post ae electronics paper of ap transco 2012…… plz plz plz ……………..
plz any provide ece (set b) answer key ………….
anyone upload set A QUETION PAPER
PLZZZZZZZZZZZ SEND KEY FOR SET-B
hi
plz post the answer of set B
in set A : 34 option is wrong its is D)corona loss
31st option is wrong it is option A)21*21
I WANT APTITUDE ANSWERS
can any one send me the apgenco ae key for electronics(ECE) SET-D
plz upload KEY FOR SET NO C
send me set c key
can anybady can share APGENCO Electrical Set-C
set-c
1.D 2.B 3B 4A 5B 6C 7A 8C 9C 10A 11A 12A 13D 14D 15D 16B 17C 18B 19B 20A 21D 22C 24B 25B 26A 27B 28A 29D 30B 31B 32A 33C 34B 35B 36B 37D 38D 39B 40C 41D 42C 43B 44C 45A 46A 47B 48B 49C 50B 51D 52B 53C 54A 55B 56A 57B 58C 59A 60C 61A 62B 63A 64D 65A 66C 67A 68A 69A 70C
I found these answers by referring some books and websites
correct answers
22)6!=6*5*4*3*2*1=720
please post the answer key for apgenco ” C” booklet
electrical set c key
plzzzzzzzzzzz send me key for SET-D ECE ……………….APGENCO AE
plz atleast upload the question paper of set A or D
can any one send me the apgenco ae key for electronics(ECE) SET-D. TO praveen.rocks453@gmail.com
plz send set c key soon
please send me MY MAIL mahesh.pamungulla@gmail.com set C ANSWERS
PLZ SEND ME C ANSWERS
Please send me the Set-B Key for AE electrical.
hi dis z kranthi
PLEASE SEND ANSWERS FOR BOOKLET CODE- ‘C’.
set c electrical …………..please some one post here
hi can anybody upload set c (electrical) pls
plz give ans of set C…
key plzzz
set A answers are they correct
set c electrical key some one provide
key according to above question only
1-d
2-b
3- d(actually i have seenin wikipedia 819.19s correct me)
4- c
6- c
7-a
8-c (above given all A)
9-b
10-a
12-a
14-c
15-a
16-c
17–dont know
18- dont know
19-b
20– dont know
21-d
23-d
25-dont know
26-c
29-dont know
30-c
33-c
34-b
35-dont know
37-a
39-d
41-a
42-b
43-b
44-c
45-c
46-b
47-b
48-d
50-b
53-dont know
for aptiitude followabove comment most of them are right
this is uptomy knowledge and after excessive search
if found wrong please correct me. and if you the answers for which i have left out please mention below
KEY FOR SET C ELECTRICAL
KEY FOR SET C ELECTRICAL
any one with mechanical key..
and about cuttoffs