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PYQs on Basic Networks (Q.57-58)
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In this lesson I've discussed PYQs based on basic network for SSC JE 2019

## Pawan Chandani is teaching live on Unacademy Plus

Pawan Chandani
Faculty of GATE/ESE (Electrical Engineering) , Also a YouTuber and teaches Electrical Eng. subjects on YouTube | Jony Ive Award Winner

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1. PYQs on Basic Networks - Pawan Chandani

2. 11:01 AM Saved Preparation Strategy for Electrical & Electronics Measurements O saved Wy-Pavn Chandan ib 128 likes 16 comments Share Edit Review HINDI Basics of Measurements (Hindi) Part 1: Electrical and Electronic Measurements your Pawan Chandani Follow 8.2k Followers 4.7 (260 ratings) Write a review Done Preparation Strategy for Electrical And 01 Electronics Measurements Playing Basics of Measurements (in Hindi) 11:23 02 Error Analysis Part 1 (in Hindi) 03

3. Q.57 For the linear circuit shown in figure, When R-, V 20 V; When R = 0, i = 4 A When R-5 , the current I is a) 1 A b) 2 A c) 3 A d) 4 A [SSC JE 2014] linear Circait

4. Q.57 For the linear circuit shown in figure, When R = 09, V = 20 V; When R = 0, l=4A When R = 5 , the current l is a) 1 A b) 2 A c) 3 A d) 4 A SSC JE 2014] near O.C S. C

5. thJ Ro R-552 -200( - 5 f5

6. Q.58 In the network shown in the figure, the value of R such that maximum possible power will be transferred to R is a) 5.76 b) 6.0 c) 10.0 d) 15.0 [SSC JE 2014] 10S2 RL 6 42

7. Q.58 In the network shown in the figure, the value of R such that maximum possible power will be transferred to RL is a) 5.76 b) 6.0 c) 10.0 d) 15.0 SSC JE 2014] 10-S2 nol equivalenf resistance across the load Kth. OY OY =2.c

8. Q.58 In the network shown in the figure, the value of RL such that maximum possible power will be transferred to R is a) 5.76 b) 6.0 c) 10.0 d) 15.0 [SSC JE 2014] 10S2 42 1o2 52 8 1o+5) (6+9)- 15 10

9. A8 5 10

10. Q.59 The circuit shown in the given figure is equivalent to a load of a) 4/3 b) 8/3 c) 4 d) 2 [SSC JE 2014] 2

11. [SSC JE 2014] Q.59 The circuit shown in the given figure is equivalent to a load of a) 4/3 b) 8/3 c) 4 d) 2 2

12. -21 2 ns 3

13. SSC JE 2014] Q.60 Find RaB for the circuit shown in the figure a) 18 b) 30 c) 45 d) 68 20 30 5052 AB 102 15 2 8

14. Q.60 Find RaB for the circuit shown in the figure a) 18 b) 30 c) 45 d) 68 SSC JE 2014] 20 30 5052 AB 8 icacon of wheatstone bridge Chac k balance condition

15. Q.60 Find RAB for the circuit shown in the figure a) 180 b) 30 Q c) 45 d) 68 SSC JE 2014] 202 502 AB 102 15 2 8 30030balanced O >

16. Q.60 Find RaB for the circuit shown in the figure a) 18 b) 30 Q c) 45 Q d) 68 SSC JE 2014] 20 30 AB 8 RA8= (20+10) 11 (30+15) 20+10 18 S2 304S

17. Q.61 Calculate the total susceptance of the circuit shown in figure a) 6.67 b) 1.87 c) 0.16 d) 0.08 SSC JE 2014] 3 39 Jmpedance - 2 = Rt (x Co nductance 1 dmitfance susceptance 2

18. susceptance the imaging frt of 9dmittance 5- 11c 230L0 U 142 - 10 5-11 8-J6 (a.jy)(s-jio)o- 3 + 5-11o S5 j1O

19. SS+lo 55- 10 440 + 801-33 o + So 500-250 500 250 3/2S

20. Q.62 The efficiency normally obtained in a circuit under the conditions of maximum power transfer is a) 100 % b) 25% c) 50% d) 75% [SSC JE 2014]

21. Q.62 The efficiency normally obtained in a circuit under the conditions of maximum power transfer is a) 100% b) 25% c) 50% d) 75% [SSC JE 2014]

22. Q.63 Superposition theorem can be applied only to a) Bilateral network b) Linear network c) Nonlinear network d) Linear bilateral network [SSC JE 2014]

23. Q.63 Superposition theorem can be applied only to a) Bilateral network b) Linear network c) Nonlinear network d) Linear bilateral network [SSC JE 2014] per positioy inea, active &dater q -->

24. Q.64 Using Milliman's theorem, find the current through the load resistance Ri of 3 2 resistance shown below: a) 12 A b) 4 A c) 6 A d) 8 A [SSC JE 2014] 3.2 32 3 2

25. Q.64 Using Milliman's theorem, find the current through the load resistance RL of 3 2 resistance shown below a) 12 A b) 4 A c) 6 A d) 8 A [SSC JE 2014] 32 32 24 U U- 3 3 3 3 3 3 3

26. \$(8+1' +24) .3 3 3 1 1 3 I G 16U (+ 3+I

27. Q.65 Thevenin's equivalent voltage and resistance between the terminal A and B for network of given figure is: a) 2.5 V, 12.5 b) 2.5 V, 3.75 c) 12.5 V, 3.75 d) 12.5 V, 2.5 [SSC JE 2014] Lo U 3

28. Q.65 Thevenin's equivalent voltage and resistance between the terminal A and B for network of given figure is: a) 2.5 V, 12.5 b) 2.5 V, 3.75 c) 12.5 V, 3.75 d) 12.5 V, 2.5 SSC JE 2014] 15 5 oU 3 A-20 15 oun

29. ng-50 =0 A S.C. both the source th 15 5 (15115) 15 +5 A G -75 -32.5 = 375 a 2 O

30. Q.66 The voltage across the 1 k2 resistor of the network shown in the given figure is a) 2 V b) 4 V c) 6 V d) 1 V [SSC JE 2015] 2k2 Lo U

31. Q.66 The voltage across the 1 k2 resistor of the network shown in the given figure is: a) 2 V b) 4 V c) 6 V d) 1 V SSC JE 2015] 2k2 2kS2 t 2 2K 2K

32. =0 2K 2K 2 48 2 Ans

33. Q.67 In a pure inductive circuit if the supply frequency is reduced t 1/2, the current will a) Be four times as high b) Be doubled c) Be reduced by half d) Be reduced to one fourth [SSC JE 2015]

34. Q.67 In a pure inductive circuit if the supply frequency is reduced t 1/2, the current will a) Be four times as high b) Be doubled c) Be reduced by half d) Be reduced to one fourth [SSC JE 2015] Sol 2TTf L I2 2. 1, : 211 doublet tns- AS

35. Q.68 An active element in a circuit in one which: a) Receives energy b) Supplies energy c) Dissipates energy d) Both receives and supplies energy ISSC JE - 2015]

36. Q.68 An active element in a circuit in one which a) Receives energy b) Supplies energy c) Dissipates energy d) Both receives and supplies energy ISSC JE - 2015] 8801 ctive elementsiasin ignal e onus, mpli Op-amp nerg

37. Q.69 The superposition is used when the circuit contains: a) Passive elements only b) A single voltage source c) Active elements only d) A number of voltage sources ISSC JE - 2015]

38. Q.69 The superposition is used when the circuit contains: a) Passive elements only b) A single voltage source c) Active elements only d) A number of voltage sources ISSC JE - 2015] ptrpositoncve, inea, ilateral la tera Apply when move than one ources present in the ckt

39. Q.70 If two capacitance C1 and C2 are connected in parallel then equivalent capacitance is given by: a) C,C2 b) C2/C1 c) C+C2 d) C1/C2 [SSC JE 2015]

40. Q.70 If two capacitance C1 and C2 are connected in parallel then equivalent capacitance is given by: a) C1C2 b) C2/C, c) C1 C2 d) C/C2 [SSC JE 2015] G,*c, (c for parallel) 2

41. Q.71 If the coefficient of coupling between two coils is increased, mutual inductance between the coils a) Is decreased b) Remains unchanged c) Is increased d) Changes depend on current only [SSC JE 2015]

42. Q.71 If the coefficient of coupling between two coils is increased, mutual inductance between the coils a) Is decreased b) Remains unchanged c) Is increased d) Changes depend on current only [SSC JE 2015] K= M increase d (c) Constomt

43. Q.72 A linear circuit is one whose parameters a) Do not change with voltage and current b) Change with change in current c) Change with change in voltage d) None of the options [SSC JE 2015]

44. Q.72 A linear circuit is one whose parameters a) Do not change with voltage and current b) Change with change in current c) Change with change in voltage d) None of the options [SSC JE 2015] Aol-- Jn linear circuit para meters Son't change 1n change 52

45. Q.73 For the circuit shown below, find the resistance between points P and Q a)2 b) 1 c) 3 d) 4 [SSC JE 2015] 12 212 12

46. eries 1+122 2 . 152 parallel (I n8 12 Pg

47. Q.74 lf 750 is flowing through 11 k of resistance, what is the voltage drop across the resistors? a) 146 V b) 8.25 V c) 14.6 V d) 82.5 V [SSC JE 2015]

48. Q.74 If 750 is flowing through 11 k f resistance, what is the voltage drop across the resistors? a) 146 V b) 8.25 V c) 14.6 V d) 82.5 V [SSC JE 2015] + U 3 825 100

49. Q.75 A primary cell has an emf of 1.5 V. When short circuited, it gives a current of 3 A. The internal resistance of cell is a) 4.5 b) 0.2 c) 0.5 d) 20 [SSC JE 2015]

50. Q.75 A primary cell has an emf of 1.5 V. When short circuited, it gives a current of 3 A. The internal resistance of cell is a) 4.5 b) 0.2 c) 0.5 d) 20 [SSC JE 2015] Rol 1,5U

51. Q.75 A primary cell has an emf of 1.5 V. When short circuited, it gives a current of 3 A. The internal resistance of cell is a) 4.5 b) 0.2 c) 0.5 0 d) 2 [SSC JE 2015] Rol 1,5U 1=34 3

52. Q.76 Thevenin's theorem can not be applied to a) Passive circuit b) Active circuit c) Nonlinear circuit d) Linear circuit SSC JE 2015]

53. Q.76 Thevenin's theorem can not be applied to a) Passive circuit b) Active circuit c) Nonlinear circuit d) Linear circuit SSC JE 2015] Thevenin's theorem aan't apply on non-unear k unilatera

54. Q.77 One sine wave has a period of 2ms, another has a period of 10 ms. Which sine wave is changing at a faster rate? a) All are at the same rate b) Sine wave with period 2 ms c) Sine wave with period 5 ms d) Sine wave with period of 10 ms [SSC JE 2015]

55. Q.77 One sine wave has a period of 2ms, another has a period of 10 ms. Which sine wave is changing at a faster rate? a) All are at the same rate b) Sine wave with period 2 ms c) Sine wave with period 5 ms d) Sine wave with period of 10 ms [SSC JE 2015] T= ele/sec (b) -_-_-500 H -500 cy T 2m 1oo cycle Sec Lo m

56. Q.78 If the number of turns of a coil is increased, its inductance a) Is decreased b) Remains the same c) Is increased d) None of the options [SSC JE 2015]

57. Q.78 If the number of turns of a coil is increased, its inductance a) Is decreased b) Remains the same c) Is increased d) None of the options [SSC JE 2015] increases Ce

58. Q.79 The unit for permeability is: a) Wb b) At/m c) Wb/At x m d) At/Wb [SSC JE 2015]

59. Q.79 The unit for permeability is: a) Wb b) At/m c) Wb/At x m d) At/Wb [SSC JE 2015] rm 4(c)

60. 0.80 A bar of Iron 1cm2 in cross section has 10-4 wb of magnetic flux in it. If H,- 2000, what is the magnetic field intensity in the bar? a) 398 x 10-4 At/m b) 398 At/m c) 398 x 104 At/m d) 796 x 103 At/m [SSC JE 2015]

61. Q.80 A bar of Iron 1cm2 in cross section has 10-4 wb of magnetic flux in it. If ,-2000, what is the magnetic field intensity in the bar? a) 398 x 10-4 At/m b) 398 At/m c) 398 x 104 At/m d) 796 x 103 At/m [SSC JE 2015] c>_ 10-Y iuen 1 x 1o-7 2000 8 1 397.8 At/m

62. Q. 81 A current of 2 A passes through a coil of 350 kms wound on a ring of mean diameter 12 cm. The flux density established in the ring is 1-4 wb/m2. Find the value of relative permeability of iron. a) 600 b) 210 x 10 c) 1200 d) 191 [SSC JE- 2015]

63. Q.82 Find the node voltage VA a) 5.66 V b) 6 V c) 6.66 V d) 5 V [SSC JE 2015] 1 12 U 123 R 2 8

64. Q.82 Find the node voltage VA a) 5.66 V b) 6 V c) 6.66 V d) 5 V [SSC JE 2015] abbly ing KCL at node n A 12 1 39-18-0 /8/

65. Q. 83 When the current through the coil of an electromagnet reverses, the a) Magnetic field expands b) Magnetic field collapses c) Direction of the magnetic field reverses d) Direction of the magnetic field remains unchanged [SSC JE 2015]

66. Q. 83 When the current through the coil of an electromagnet reverses, the a) Magnetic field expands b) Magnetic field collapses c) Direction of the magnetic field reverses d) Direction of the magnetic field remains unchanged [SSC JE 2015]

67. Q. 84 A node in a circuit is defined as a: a) Junction of two or more elements b) Closes path c) Group of interconnected elements d) Open terminal of an element [SSC JE 2015]

68. Q. 84 A node in a circuit is defined as a: a) Junction of two or more elements b) Closes path c) Group of interconnected elements d) Open terminal of an element [SSC JE 2015] ol 4metion of too move elements (a) Ans 2

69. Q. 85 When a source is delivering maximum power to the load, the efficiency will be a) Below 50 % b) Maximum c) 50 % d) Above 50 % ISSC JE 2015]

70. Q. 85 When a source is delivering maximum power to the load, the efficiency will be a) Below 50 % b) Maximum c) 50 % d) Above 50 % ISSC JE 2015] MPT

71. Q. 86 The internal resistance of a voltage source is 10 and has 10 V at its terminals. Find the max. power that can be transferred to the load. a) 0.25 W b) 21.4 W c) 2.5 W d) 5 W [SSC JE 2015]

72. Q. 86 The internal resistance of a voltage source is 10 and has 10 V at its terminals. Find the max. power that can be transferred to the load. a) 0.25 VW b) 21.4 W c) 2.5 W d) 5 W SSC JE 2015] IOU ( 2 10 2 100 2.5W max NsCe)

73. Q. 87 During the resistance welding, the heat produced at the point is proportional to a) PR b) Current c) Volt-Ampere d) Voltage [SSC JE 2015]

74. Q. 87 During the resistance welding, the heat produced at the point is proportional to a) PR b) Current c) Volt-Ampere d) Voltage [SSC JE 2015] Heat = 12 Rit eat R ()

75. Q. 88 What is power consumed by the resistor of 20 connected across 100 V source ? a) 300 W b) 500 W c) 100 W d) 50 W [SSC JE 2015]

76. Q. 88 What is power consumed by the resistor of 20 a) 300 W b) 500 W c) 100 W d) 50 W connected across 100 V source? [SSC JE 2015] 2 00 Loo 20 2 = 500 20 20

77. Q. 89. The current 'I' in the circuit shown below is a) 1A b) 1.7 A c) 2.7 A d) 3.7 A [SSC JE - 2015] 1A 2A 1.3A 2A

78. Q. 89. The current 'I' in the circuit shown below is a) 1A b) 1.7 A c) 2.7 A d) 3.7 A [SSC JE - 2015] 1A 2A 80 1.3A MA 3 A 2A n8

79. Q. 90 Electrical resistivity p is a) High for copper and low for alloy b) Low for copper and high for alloy c) High for copper as well as for alloy d) Low for copper as well as for alloy [SSC JE 2015]

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