SSC JE Electrical / Mock Test Series : 2

Topic : Mixed Technical (Electrical Engg.)

No. of Question : 100

Type : MCQ

Time : 60 Minutes

212

1 hours

Created on August 14, 2023 By

Electrical Notebook

SSC JE Electrical / Mock Test Series : 2

Notification 2023 has been released on 26th July 2023. A total of 198 vacancies have been announced in various departments of the Central Government. The last date to apply online is 16th August. SSC JE 2023 Candidates with a degree/diploma in the relevant engineering stream are eligible for this post. The selection will be based on Computer Based Test (Paper I, Paper-II), Document Verification, and Medical Examination. Physical Standard Test/Physical Efficiency Test is conducted only for candidates applying in BRO.
The finally appointed candidates will get a salary range between Rs. 35,400/- to Rs. 1,12,400/-.

1 / 100

Category: AC Fundamental

1. In a series R-C circuit, the applied voltage –

A) 90° leads the current

B) 90° lags the current

C) leads the current

D) lags the current

2 / 100

Category: Basic Electricity

2. If there are two bulbs connected in series and one blows out, what happens to the other bulb?

A) The other bulb also burns out

B) The other bulb stops glowing

C) The other bulb glows with increased brightness

D) The other bulb continues to glow with the same brightness

3 / 100

Category: AC Fundamental

3. In series R-L circuit power factor can be defined as –

A) Vr/V

B) All of these

C) P/S

D) R/Z

4 / 100

Category: Basic Electricity

4. Find the voltage across the 6 ohm resistor

A) 181.6 V

B) 150 V

C) 54.48 V

D) 27.27 V

5 / 100

Category: AC Fundamental

5. In a capacitor, the electrical energy is stored in –

A) electric field

B) both a and b

C) Magnetic field

D) none

6 / 100

Category: Basic Electricity

6. Batteries are generally connected in______

A) Parallel

B) Either series or parallel

C) Series

D) Neither series nor parallel

7 / 100

Category: Magnetic Circuit

7. Electric field & magnetic field are interrelated and are known as –

A) Electromagnets

B) Electromagnetism field

C) Electromagnetic fields

D) Electric magnets

8 / 100

Category: Magnetic Circuit

8. Energy stored in a magnetic field is given by –

A) LI^2

B) L^2 I / 2

C) LI^2 / 2

D) IL^2

9 / 100

Category: AC Fundamental

9. For a sinusoidal AC voltage, amplitude factor is –

A) 0.637

B) 0.707

C) 1.414

D) 1.11

10 / 100

Category: AC Fundamental

10. Form factor of square wave is-

A) 2

B) 1

C) 1.41

D) 1.47

11 / 100

Category: AC Fundamental

11. Average value can be defined based on which of the following? –

A) Voltage

B) Heating effect

C) Charge transfer

D) Current

12 / 100

Category: Basic Electricity

12. If the length of a wire is doubled and diameter is halved, then the resistance will become –

A) 32 times

B) 4 times

C) 16 times – of the previous

D) 8 times

13 / 100

Category: Basic Electricity

13. Calculate the value of energy stored in an inductor if the value of inductance is 10H and 2A of current flows through it.-

A) 20 J

B) 15 J

C) 90 J

D) 60 J

14 / 100

Category: Basic Electricity

14. Color code for 1 ohm +-10% resistor is

A) Brown Black Golden Golden

B) Black Brown Black Silver

C) Black Brown Black Golden

D) Brown Black Golden Silver

15 / 100

Category: Basic Electricity

15. In a ____________ circuit, the total resistance is smaller than the smallest resistance in the circuit

A) Neither series nor parallel

B) Parallel

C) Either series or parallel

D) Series

16 / 100

Category: Magnetic Circuit

16. Calculate the value of energy stored in an inductor if the value of inductance is 10H and 2 A of current flows through it. –

A) 60 J

B) 90 J

C) 20 J

D) 15 J

17 / 100

Category: Basic Electricity

17. If energy required to heat up a heater coil is 4 KWh and the energy loss is 20%, then what is the energy input?

A) 5 kWh

B) 1 kWh

C) 4 kWh

D) 2 kWh

18 / 100

Category: Basic Electricity

18. If the current through x ohm resistance in the circuit is 5A, find the value of x

A) 27 ohm

B) 12 ohm

C) 5 ohm

D) 135 ohm

19 / 100

Category: Basic Electricity

19. How many degrees are there in π/3 rad?

A) 60°

B) 6°

C) 27°

D) 180°

20 / 100

Category: Basic Electricity

20. Find the current in the circuit.

A) 1 A

B) 3 A

C) 4 A

D) 2 A

21 / 100

Category: Basic Electricity

21. Calculate the equivalent resistance between A and B

A) 2 ohm

B) 8 ohm

C) 6 ohm

D) 4 ohm

22 / 100

Category: AC Fundamental

22. From heating point of view I_D.C. is equal to –

A) I average value

B) I max Lm value

C) None

D) I R.M.S.

23 / 100

Category: AC Fundamental

23. In an AC circuit a low value of KVAR compared with KW indicates –

A) Low efficiency

B) Unity power factor

C) High power factor

D) Maximum load current

24 / 100

Category: AC Fundamental

24. For a sinusoidal AC voltage, amplitude factor is –

A) 0.707

B) 1.414

C) 0.637

D) 1.11

25 / 100

Category: AC Fundamental

25. In series R-L circuit power factor can be defined as –

A) R/Z

B) Vr /V

C) P/S

D) All of the above

26 / 100

Category: Basic Electricity

26. If the peak of a sine wave is 13 V, the peak-to-peak value is

A) 6.5 V

B) None of the above

C) 13 V

D) 26 V

27 / 100

Category: Basic Electricity

27. In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor etc?

A) Both voltage and current

B) Voltage

C) Neither voltage nor current

D) Current

28 / 100

Category: Circuit Theory & Network

28. For a pure inductive circuit, the average demand of power from the source will be –

A) Minimum

B) a very small amount

C) Zero

D) Maximum

29 / 100

Category: DC Machines

29. Direction of DC motor can be found out by-

A) Cork Screw Rule

B) Flemmings Left Hand Rule

C) Lenz Law

D) Flemmings Right Hand Rule

30 / 100

Category: Basic Electricity

30. Electric pressure is also called –

A) Energy

B) Conductance

C) Voltage

D) Resistance

31 / 100

Category: Magnetic Circuit

31. If current in a conductor increases then according to Lenz's law self-induced voltage will –

A) Tend to decrease the amount of current

B) Produce current opposite to the increasing current

C) Aid the increasing current

D) Aid the applied voltage

32 / 100

Category: AC Fundamental

32. An alternating voltage is given by, V = 10 sin 2πt. The frequency of the AC signal is –

A) None

B) π Hz

C) 1 Hz

D) 2π Hz

33 / 100

Category: Basic Electricity

33. If the rms voltage drop across a 15 kΩ resistor is 16 V, the peak current through the resistor is

A) 10 mA

B) 1.5 mA

C) 1 mA

D) 15 mA

34 / 100

Category: Basic Electricity

34. Calculate the current across the 20 ohm resistor

A) 20 A

B) 10 A

C) 36.67 A

D) 6.67 A

35 / 100

Category: Basic Electricity

35. For a sinusoidal AC voltage, amplitude factor is –

A) 0.637

B) 1.11

C) 0.707

D) 1.414

36 / 100

Category: Basic Electricity

36. Electrolysis is possible with –

A) both A.C and D.C supply

B) none

C) D.C supply only

D) A.C supply only

37 / 100

Category: AC Fundamental

37. In an AC circuit (Sine wave) with R and L in series –

A) Voltage across R and L are in phase

B) The voltage across R lags the voltage across L by 90°

C) The voltage across R leads the voltage across L by 90°

D) Voltage across R and L 180o out of face

38 / 100

Category: AC Fundamental

38. In an AC circuit (Sine wave) with R and L in series –

A) The voltage across R lags the voltage across L by 90°

B) Voltage across R and L are in phase

C) The voltage across R leads the voltage across L by 90°

D) Voltage across R and L 180o out of face

39 / 100

Category: Magnetic Circuit

39. Induced potential difference due to motion of magnet with respect to the coil is known as -

A) Electromotive force

B) Magnetomotive force

C) voltage

D) Electromotive difference

40 / 100

Category: AC Fundamental

40. Capacitive Susceptance is a measure of –

A) A purely capacitive circuit's ability to resist the flow of current

B) Reactive power in a circuit

C) The extent of neutralization of reactive power in a circuit

D) A purely capacitive circuit's ability to pass current

41 / 100

Category: Circuit Theory & Network

41. Battery is a

A) None of the above

B) AC Sorce

C) DC Source

D) Both of the above

42 / 100

Category: Transformer

42. For a 55KVA, 11000 Volts/440 Volts, 50Hz single phase transformer, the values of primary and secondary currents are –

A) 125 A, 5 A

B) 30 A, 50 A

C) 5 A, 125 A

D) 100 A, 25A

43 / 100

Category: Basic Electricity

43. Insulating material can –

A) protect a open circuit between the voltage source and load

B) Protect a short circuit between two conductors

C) Store varying voltage

D) Conduct very large current

44 / 100

Category: Magnetic Circuit

44. If the current in a coil having a constant inductance of L henrys grows at a uniform rate, what is the value of the average current?

A) 0

B) I/2

C) I

D) I/4

45 / 100

Category: AC Fundamental

45. In a R-L-C circuit, power loss takes place is –

A) L only

B) C only

C) R only

D) R-L-C all

46 / 100

Category: Basic Electricity

46. Ideal voltage source has-

A) High internal resistance

B) Zero internal resistance

C) Low internal resistance

D) Infinity internal resistance

47 / 100

Category: AC Fundamental

47. In series R-L circuit power factor can be defined as -

A) Active Power (P)/Apparent Power (S)

B) All of the above

C) R/Z

D) Vr/V

48 / 100

Category: Basic Electricity

48. Calculate the resistance between A and B

A) 29.69 ohm

B) 3.56 ohm

C) 14.26 ohm

D) 7 ohm

49 / 100

Category: Circuit Theory & Network

49. In a R-L-C series circuit, if the inductive reactance is greater than the capacitive reactance, then the power factor will be –

A) Unity

B) Leading

C) Lagging

D) Zero

50 / 100

Category: AC Fundamental

50. An electric incandescent lamp has the power factor of –

A) leading

B) unity

C) Lagging

D) zero

51 / 100

Category: Magnetic Circuit

51. In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will –

A) Remain the same

B) Increase

C) initially increase and then decrease

D) decrease

52 / 100

Category: AC Fundamental

52. In a series R-C circuit, the applied voltage –

A) 90° leads the current

B) lags the current

C) leads the current

D) 90° lags the current

53 / 100

Category: Basic Electricity

53. In case of D.C –

A) Magnitude of current changes with time

B) Magnitude and direction both change with time

C) Direction of current changes with time

D) Magnitude and direction remains constant

54 / 100

Category: Basic Electricity

54. KWh is the unit of -

A) Efficiency

B) Work

C) Energy

D) Power

55 / 100

Category: Basic Electricity

55. Frequency of Direct Current is

A) 50 kHz

B) 50 Hz

C) 40 Hz

D) 0 Hz

56 / 100

Category: AC Fundamental

56. Capacitors for power factor correction are rated in -

A) KW

B) VA

C) KVA

D) KVAR

57 / 100

Category: AC Fundamental

57. Form factor of half wave rectified ac is-

A) 2

B) 1.11

C) 1.41

D) 1.57

58 / 100

Category: Basic Electricity

58. In a pure inductive circuit current is

A) Lags by voltage by 0°

B) Lags behind Voltage by 90°

C) Leads by voltage by 0°

D) Leads by voltage by 90°

59 / 100

Category: Basic Electricity

59. If the voltage across a capacitor is constant, then current passing through it is ________

A) Infinity

B) 1

C) -1

D) 0

60 / 100

Category: Basic Electricity

60. If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is

A) 18.8 V

B) 26.6 V

C) 4 V

D) 2.66 V

61 / 100

Category: Circuit Theory & Network

61. In a R-L-C series circuit, if the capacitive reactance is greater than the inductive reactance, then the power factor will be –

A) Leading

B) Unity

C) Zero

D) Lagging

62 / 100

Category: Basic Electricity

62. In a parallel circuit, with a number of resistors, the voltage across each resistor is ________

A) Is zero for all resistors

B) Is divided equally among all resistors

C) Is divided proportionally across all resistors

D) The same for all resistors

63 / 100

Category: Magnetic Circuit

63. If both the number of turns and the core length of an inductive coil are doubled, then its self-inductance will be –

A) Unaffected

B) halved

C) quadrupled

D) doubled

64 / 100

Category: Basic Electricity

64. Calculate the total resistance between the points A and B.

A) 7 ohm

B) 0.48 ohm

C) 7.67 ohm

D) 0 ohm

65 / 100

Category: Basic Electricity

65. In a _________ circuit, the total resistance is greater than the largest resistance in the circuit.

A) Either series or parallel

B) Parallel

C) Series

D) Neither series nor parallel

66 / 100

Category: AC Fundamental

66. Average power taken by a pure capacitor is –

A) Maximum

B) Zero

C) Unity

D) Minimum

67 / 100

Category: Basic Electricity

67. An Inductor works as a ___________ circuit for DC supply.

A) Open

B) Short

C) Non-polar

D) Polar

68 / 100

Category: Magnetic Circuit

68. Calculate the value of stored energy in an inductor if the value of inductance is 20 H and 4 A of current flows through it.

A) 150 J

B) 220 J

C) 190 J

D) 160 J

69 / 100

Category: Basic Electricity

69. If a capacitor is connected with DC supply, it will act as –

A) Open circuit

B) A resistor

C) A normal capacitor as in AC

D) A short circuit

70 / 100

Category: Basic Electricity

70. Calculate the total current in the circuit

A) 11.43 A

B) 15 A

C) 20 A

D) 10 A

71 / 100

Category: AC Fundamental

71. If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is –

A) Not a sinusoid

B) A sinusoid of double the frequency

C) A sinusoid of half the original frequency

D) A sinusoid of the same frequency

72 / 100

Category: Magnetic Circuit

72. Hysteresis loss least depends on –

A) frequency

B) steinmetz coefficient of material

C) ambient temperature

D) volume of material

73 / 100

Category: AC Fundamental

73. For a sinusoidal AC voltage, peak factor or amplitude fator or crest factor is –

A) 0.707

B) 1.11

C) 0.637

D) 1.414

74 / 100

Category: AC Fundamental

74. If the inductive reactance of a coil is 6 ohm and internal resistance is 8 ohm, then the impedance will be –

A) 14 ohm

B) 2 ohm

C) 10 ohm

D) 2 ohm

75 / 100

Category: AC Fundamental

75. In a circuit containing R, L and C, power loss can take place in –

A) R only

B) All of these

C) C only

D) L only

76 / 100

Category: Basic Electricity

76. If the length of a wire is doubled and diameter is halved, then the resistance will become _________ of the previous.

A) 32 times

B) 4 times

C) 16 times

D) 8 times

77 / 100

Category: Magnetic Circuit

77. In a electric circuit MMF is similar to

A) Electromotive force

B) Flux

C) Resistance

D) Current

78 / 100

Category: Magnetic Circuit

78. Calculate the emf induced in an inductor if the inductance is 10H and the current is 2 A in 4 s.

A) 5 V

B) 2.5 V

C) 3.5 V

D) 1.5 V

79 / 100

Category: Magnetic Circuit

79. If the current in a coil having a constant inductance of L henrys grows at a uniform rate, what is the value of the average current?

A) I/2

B) 0

C) I/4

D) I

80 / 100

Category: Circuit Theory & Network

80. In any AC circuit always –

A) Reactive power is more than apparent power

B) Actual power is more than reactive power

C) Apparent power is more than actual power

D) Reactive power is more than actual power

81 / 100

Category: Basic Electricity

81. If a sine wave goes through 10 cycles in 20 μs, the period is

A) 100 μs

B) 20 μs

C) 2 μs

D) 4 μs

82 / 100

Category: Magnetic Circuit

82. An open coil has –

A) Infinite resistance and zero inductance

B) Zero resistance and inductance

C) Infinite resistance and normal inductance

D) Zero resistance and high inductance

83 / 100

Category: Magnetic Circuit

83. Higher the self-inductance of a coil –

A) Lesser its Weber-turns

B) lower the E.M.F. induced

C) longer the delay in establishing steady current through it

D) Greater the flux produced by it

84 / 100

Category: Basic Electricity

84. Calculate the equivalent resistance between A and B

A) 60 ohm

B) 15 ohm

C) 48 ohm

D) 12 ohm

85 / 100

Category: Basic Electricity

85. It is preferable to connect bulbs in series or in parallel?

A) Series

B) Neither series nor parallel

C) Parallel

D) Both series and parallel

86 / 100

Category: Basic Electricity

86. Ideal voltage source has-

A) High internal resistance

B) Low internal resistance

C) Zero internal resistance

D) Infinity internal resistance

87 / 100

Category: Magnetic Circuit

87. M.M.F in a magnetic circuit is corresponding to ……… in an electric circuit-

A) Voltage drop

B) Current

C) Emf

D) None

88 / 100

Category: Basic Electricity

88. Current & Potential Difference both can be measured using –

A) Multimeter

B) Voltmeter

C) Ohmmeter

D) Ammeter

89 / 100

Category: AC Fundamental

89. From the following when capacitive reactance will be more?

A) Capacitance is more & supply frequency is less

B) capacitance is less & supply frequency is more

C) capacitance & supply frequency is more

D) Capacitance & supply frequency is less

90 / 100

Category: Basic Electricity

90. Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m² and 5m² respectively.

A) 5:7

B) 7:5

C) 2:5

D) 2:7

91 / 100

Category: Basic Electricity

91. If two bulbs are connected in parallel and one bulb blows out, what happens to the other bulb?

A) The other bulb blows out as well

B) The other bulb stops glowing

C) The other bulb continues to glow with the same brightness

D) The other bulb glows with increased brightness

92 / 100

Category: Basic Electricity

92. Average value of a sine wave is 0.707 times the peak value

A) True

B) False

93 / 100

Category: Basic Electricity

93. Instantaneous power in inductor is proportional to the –

A) Product of instantaneous current & rate of change of current

B) Square of instantaneous current

C) Square of rate of change of current

D) Temperature of the inductor

94 / 100

Category: Basic Electricity

94. Calculate the equivalent resistance between A and B

A) 26.67 ohm

B) 46.67 ohm

C) 10.67 ohm

D) 6.67 ohm

95 / 100

Category: Basic Electricity

95. If a capacitor is connected with DC supply, it will act as –

A) a short circuit

B) open circuit

C) a resistor

D) a normal capacitor as in AC

96 / 100

Category: Basic Electricity

96. If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.

A) 50.625 W

B) 5062.5 W

C) 506.25 W

D) 50625 W

97 / 100

Category: AC Fundamental

97. In a R-L-C circuit, power loss takes place is –

A) C only

B) R-L-C all

C) L only

D) R only

98 / 100

Category: Magnetic Circuit

98. In a magnetic material hysteresis loss takes place primarily due to –

A) flux density lagging behind magnetising force

B) rapid reversals of its magnetisation

C) its high retentivity

D) molecular friction

99 / 100

Category: AC Fundamental

99. In series R-L circuit power factor can be defined as –

A) P/S

B) All of the above

C) Vr /V

D) R/Z

100 / 100

Category: AC Machines & Transformer

100. In which device is the principle of statically induced E.M.F used?

A) Transformer

B) Motor

C) Generator

D) Battery

Your score is

The average score is 23%

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