SSC JE Electrical / Mock Test Series : 2

Topic : Mixed Technical (Electrical Engg.)

No. of Question : 100

Type : MCQ

Time : 60 Minutes

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: Basic Electricity

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

A) None of the above

B) 26 V

C) 6.5 V

D) 13 V

2 / 100

Category: Basic Electricity

2. Instantaneous power in inductor is proportional to the –

A) Temperature of the inductor

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

C) Square of instantaneous current

D) Square of rate of change of current

3 / 100

Category: AC Fundamental

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

A) electric field

B) both a and b

C) Magnetic field

D) none

4 / 100

Category: AC Fundamental

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

A) L only

B) C only

C) All of these

D) R only

5 / 100

Category: Magnetic Circuit

5. 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) initially increase and then decrease

B) Increase

C) decrease

D) Remain the same

6 / 100

Category: DC Machines

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

A) Flemmings Right Hand Rule

B) Lenz Law

C) Cork Screw Rule

D) Flemmings Left Hand Rule

7 / 100

Category: AC Fundamental

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

A) A sinusoid of half the original frequency

B) A sinusoid of the same frequency

C) A sinusoid of double the frequency

D) Not a sinusoid

8 / 100

Category: Basic Electricity

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

A) Parallel

B) Either series or parallel

C) Series

D) Neither series nor parallel

9 / 100

Category: Basic Electricity

9. Ideal voltage source has-

A) High internal resistance

B) Low internal resistance

C) Zero internal resistance

D) Infinity internal resistance

10 / 100

Category: Basic Electricity

10. Calculate the equivalent resistance between A and B

A) 15 ohm

B) 12 ohm

C) 60 ohm

D) 48 ohm

11 / 100

Category: AC Fundamental

11. Average power taken by a pure capacitor is –

A) Unity

B) Maximum

C) Zero

D) Minimum

12 / 100

Category: AC Fundamental

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

A) 90° lags the current

B) leads the current

C) 90° leads the current

D) lags the current

13 / 100

Category: Magnetic Circuit

13. An open coil has –

A) Infinite resistance and zero inductance

B) Zero resistance and inductance

C) Zero resistance and high inductance

D) Infinite resistance and normal inductance

14 / 100

Category: Basic Electricity

14. Calculate the total current in the circuit

A) 20 A

B) 11.43 A

C) 15 A

D) 10 A

15 / 100

Category: AC Fundamental

15. Form factor of square wave is-

A) 1

B) 1.41

C) 2

D) 1.47

16 / 100

Category: Basic Electricity

16. Batteries are generally connected in______

A) Parallel

B) Neither series nor parallel

C) Series

D) Either series or parallel

17 / 100

Category: AC Fundamental

17. Form factor of half wave rectified ac is-

A) 1.41

B) 1.11

C) 2

D) 1.57

18 / 100

Category: AC Fundamental

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

A) C only

B) R only

C) L only

D) R-L-C all

19 / 100

Category: Basic Electricity

19. Frequency of Direct Current is

A) 40 Hz

B) 0 Hz

C) 50 Hz

D) 50 kHz

20 / 100

Category: Basic Electricity

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

A) 4 V

B) 2.66 V

C) 26.6 V

D) 18.8 V

21 / 100

Category: AC Fundamental

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

A) 0.707

B) 0.637

C) 1.414

D) 1.11

22 / 100

Category: AC Fundamental

22. Capacitive Susceptance is a measure of –

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

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

C) Reactive power in a circuit

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

23 / 100

Category: Basic Electricity

23. Electrolysis is possible with –

A) both A.C and D.C supply

B) D.C supply only

C) none

D) A.C supply only

24 / 100

Category: Magnetic Circuit

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

A) Electromagnetism field

B) Electromagnetic fields

C) Electromagnets

D) Electric magnets

25 / 100

Category: Magnetic Circuit

25. Hysteresis loss least depends on –

A) volume of material

B) frequency

C) ambient temperature

D) steinmetz coefficient of material

26 / 100

Category: Basic Electricity

26. 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

27 / 100

Category: Basic Electricity

27. Electric pressure is also called –

A) Energy

B) Conductance

C) Voltage

D) Resistance

28 / 100

Category: Circuit Theory & Network

28. In any AC circuit always –

A) Reactive power is more than apparent power

B) Actual power is more than reactive power

C) Reactive power is more than actual power

D) Apparent power is more than actual power

29 / 100

Category: AC Fundamental

29. 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) 10 ohm

C) 2 ohm

D) 2 ohm

30 / 100

Category: AC Fundamental

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

A) All of the above

B) Vr/V

C) R/Z

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

31 / 100

Category: AC Fundamental

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

A) R/Z

B) P/S

C) All of the above

D) Vr /V

32 / 100

Category: Basic Electricity

32. 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 mA

C) 15 mA

D) 1.5 mA

33 / 100

Category: Basic Electricity

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

A) 0.48 ohm

B) 7.67 ohm

C) 0 ohm

D) 7 ohm

34 / 100

Category: Basic Electricity

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

A) Black Brown Black Golden

B) Brown Black Golden Silver

C) Black Brown Black Silver

D) Brown Black Golden Golden

35 / 100

Category: AC Fundamental

35. Capacitors for power factor correction are rated in -

A) KVAR

B) KW

C) VA

D) KVA

36 / 100

Category: AC Fundamental

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

A) Charge transfer

B) Heating effect

C) Voltage

D) Current

37 / 100

Category: Basic Electricity

37. 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) 2:5

B) 7:5

C) 5:7

D) 2:7

38 / 100

Category: Basic Electricity

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

A) 27 ohm

B) 5 ohm

C) 12 ohm

D) 135 ohm

39 / 100

Category: AC Fundamental

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

A) 1.11

B) 0.637

C) 1.414

D) 0.707

40 / 100

Category: Basic Electricity

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

A) Non-polar

B) Short

C) Polar

D) Open

41 / 100

Category: Basic Electricity

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

A) True

B) False

42 / 100

Category: Basic Electricity

42. KWh is the unit of -

A) Work

B) Power

C) Efficiency

D) Energy

43 / 100

Category: Basic Electricity

43. Calculate the resistance between A and B

A) 14.26 ohm

B) 3.56 ohm

C) 7 ohm

D) 29.69 ohm

44 / 100

Category: AC Machines & Transformer

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

A) Battery

B) Motor

C) Transformer

D) Generator

45 / 100

Category: Magnetic Circuit

45. 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) 15 J

D) 20 J

46 / 100

Category: Magnetic Circuit

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

A) L^2 I / 2

B) LI^2

C) LI^2 / 2

D) IL^2

47 / 100

Category: Basic Electricity

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

A) Voltmeter

B) Multimeter

C) Ammeter

D) Ohmmeter

48 / 100

Category: Basic Electricity

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

A) The other bulb stops glowing

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

C) The other bulb glows with increased brightness

D) The other bulb blows out as well

49 / 100

Category: Basic Electricity

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

A) 1.11

B) 0.707

C) 1.414

D) 0.637

50 / 100

Category: AC Fundamental

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

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

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

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

D) Voltage across R and L are in phase

51 / 100

Category: AC Fundamental

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

A) High power factor

B) Low efficiency

C) Unity power factor

D) Maximum load current

52 / 100

Category: Basic Electricity

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

A) 16 times – of the previous

B) 32 times

C) 8 times

D) 4 times

53 / 100

Category: Magnetic Circuit

53. Higher the self-inductance of a coil –

A) Greater the flux produced by it

B) longer the delay in establishing steady current through it

C) lower the E.M.F. induced

D) Lesser its Weber-turns

54 / 100

Category: Circuit Theory & Network

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

A) Zero

B) Leading

C) Lagging

D) Unity

55 / 100

Category: AC Fundamental

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

A) I R.M.S.

B) I max Lm value

C) None

D) I average value

56 / 100

Category: Magnetic Circuit

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

A) 3.5 V

B) 5 V

C) 1.5 V

D) 2.5 V

57 / 100

Category: Basic Electricity

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

A) open circuit

B) a short circuit

C) a resistor

D) a normal capacitor as in AC

58 / 100

Category: Basic Electricity

58. Ideal voltage source has-

A) High internal resistance

B) Infinity internal resistance

C) Low internal resistance

D) Zero internal resistance

59 / 100

Category: Basic Electricity

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

A) 60 J

B) 15 J

C) 90 J

D) 20 J

60 / 100

Category: Basic Electricity

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

A) 4 times

B) 8 times

C) 16 times

D) 32 times

61 / 100

Category: Basic Electricity

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

A) 4 μs

B) 20 μs

C) 2 μs

D) 100 μs

62 / 100

Category: Circuit Theory & Network

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

A) Leading

B) Unity

C) Zero

D) Lagging

63 / 100

Category: Basic Electricity

63. In case of D.C –

A) Direction of current changes with time

B) Magnitude of current changes with time

C) Magnitude and direction both change with time

D) Magnitude and direction remains constant

64 / 100

Category: AC Fundamental

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

A) R only

B) L only

C) R-L-C all

D) C only

65 / 100

Category: AC Fundamental

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

A) 1 Hz

B) π Hz

C) 2π Hz

D) None

66 / 100

Category: Magnetic Circuit

66. 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) 160 J

B) 190 J

C) 220 J

D) 150 J

67 / 100

Category: AC Fundamental

67. 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

68 / 100

Category: Magnetic Circuit

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

A) quadrupled

B) doubled

C) Unaffected

D) halved

69 / 100

Category: Basic Electricity

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

A) Neither series nor parallel

B) Both series and parallel

C) Parallel

D) Series

70 / 100

Category: Magnetic Circuit

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

A) None

B) Voltage drop

C) Current

D) Emf

71 / 100

Category: Basic Electricity

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

A) 1

B) 0

C) Infinity

D) -1

72 / 100

Category: Circuit Theory & Network

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

A) Zero

B) Minimum

C) a very small amount

D) Maximum

73 / 100

Category: Magnetic Circuit

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

A) its high retentivity

B) molecular friction

C) rapid reversals of its magnetisation

D) flux density lagging behind magnetising force

74 / 100

Category: Basic Electricity

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

A) A resistor

B) A short circuit

C) Open circuit

D) A normal capacitor as in AC

75 / 100

Category: AC Fundamental

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

A) P/S

B) Vr /V

C) All of the above

D) R/Z

76 / 100

Category: AC Fundamental

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

A) Vr/V

B) R/Z

C) P/S

D) All of these

77 / 100

Category: AC Fundamental

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

A) 0.637

B) 1.11

C) 1.414

D) 0.707

78 / 100

Category: Circuit Theory & Network

78. Battery is a

A) DC Source

B) None of the above

C) Both of the above

D) AC Sorce

79 / 100

Category: AC Fundamental

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

A) unity

B) Lagging

C) leading

D) zero

80 / 100

Category: Magnetic Circuit

80. 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

C) I/4

D) I/2

81 / 100

Category: Magnetic Circuit

81. 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/4

B) 0

C) I

D) I/2

82 / 100

Category: Basic Electricity

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

A) 60°

B) 6°

C) 27°

D) 180°

83 / 100

Category: Magnetic Circuit

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

A) voltage

B) Magnetomotive force

C) Electromotive force

D) Electromotive difference

84 / 100

Category: Magnetic Circuit

84. In a electric circuit MMF is similar to

A) Current

B) Flux

C) Resistance

D) Electromotive force

85 / 100

Category: Basic Electricity

85. Insulating material can –

A) Conduct very large current

B) Protect a short circuit between two conductors

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

D) Store varying voltage

86 / 100

Category: Basic Electricity

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

A) The same for all resistors

B) Is divided equally among all resistors

C) Is zero for all resistors

D) Is divided proportionally across all resistors

87 / 100

Category: AC Fundamental

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

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

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

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

D) Voltage across R and L are in phase

88 / 100

Category: Basic Electricity

88. 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) 4 kWh

C) 2 kWh

D) 1 kWh

89 / 100

Category: Basic Electricity

89. Find the voltage across the 6 ohm resistor

A) 150 V

B) 181.6 V

C) 54.48 V

D) 27.27 V

90 / 100

Category: Transformer

90. 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) 100 A, 25A

C) 30 A, 50 A

D) 5 A, 125 A

91 / 100

Category: Basic Electricity

91. Calculate the equivalent resistance between A and B

A) 10.67 ohm

B) 26.67 ohm

C) 46.67 ohm

D) 6.67 ohm

92 / 100

Category: Basic Electricity

92. Calculate the current across the 20 ohm resistor

A) 20 A

B) 10 A

C) 6.67 A

D) 36.67 A

93 / 100

Category: Basic Electricity

93. 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) Current

D) Neither voltage nor current

94 / 100

Category: Basic Electricity

94. Find the current in the circuit.

A) 1 A

B) 4 A

C) 2 A

D) 3 A

95 / 100

Category: Basic Electricity

95. Calculate the equivalent resistance between A and B

A) 4 ohm

B) 8 ohm

C) 2 ohm

D) 6 ohm

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) 506.25 W

C) 50625 W

D) 5062.5 W

97 / 100

Category: Magnetic Circuit

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

A) Aid the applied voltage

B) Produce current opposite to the increasing current

C) Tend to decrease the amount of current

D) Aid the increasing current

98 / 100

Category: Basic Electricity

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

A) Neither series nor parallel

B) Series

C) Either series or parallel

D) Parallel

99 / 100

Category: Basic Electricity

99. In a pure inductive circuit current is

A) Lags behind Voltage by 90°

B) Leads by voltage by 0°

C) Leads by voltage by 90°

D) Lags by voltage by 0°

100 / 100

Category: AC Fundamental

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

A) capacitance & supply frequency is more

B) Capacitance & supply frequency is less

C) capacitance is less & supply frequency is more

D) Capacitance is more & supply frequency is less

Your score is

The average score is 31%

SSC JE Electrical / Mock Test Series : 1

SSC Junior Engineer (Electrical) Free Mock Test Series

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