Sample Paper Junior Engineer Electrical [Part-2] – HPSSC Hamirpur

51. A 230V, 100W bulb has resistance R_A and 230V, 200W bulb has resistance R_B, then,

1. R_A = 4R_B
2. R_A=R_B
3. R_A>R_B
4. R_A<R_B

52. Unit of magnetic flux is

1. Weber
2. Ampere-turn
3. Tesla
4. Coulomb

53. A 50 Hz alternator will run at the greatest possible speed if it is wound for  _____ poles.

1. 6
2. 4
3. 2
4. 8

54. Meggar is used to measure

1. Harmonics
2. Frequency
3. Voltage
4. Insulation resistance

55. Bridge used for measurement of capacitance is

1. Anderson’s bridge
2. Hay’s bridge
3. Schering bridge
4. Max well’s bridge

56. Best conductor amongst the following is

1. Porcelain
2. China clay
3. Graphite
4. None of these

57. Negative sequence relay is used in

1. Feeder
2. Transformer
3. Generator
4. Long overhead line

58. Stepper motor is used in

1. Cassette motor is used in
2. Ceiling fan
3. Hand drills
4. Digital control system

59. Forward resistance of a crystal diode is of the order of

1. Ω
2. kΩ
3. MΩ
4. Zero Ω

60. Transformer is required for the operation of

1. Half –wave rectifier
2. Bridge rectifier
3. Centre-tap rectifier
4. Both (1) and (2)

61. The ratio of reverse resistance and forward resistance of a germanium crystal diode is about

1. 100:1
2. 1000:1
3. 40000:1
4. 1:1

62. In a transistor reversed biosed pn junction has a resistance of the

1. Order of Ω
2. Order of kΩ
3. Order of MΩ
4. Zero Ω

63. Valence electrons in a pentavalent  impurity are

1. 4
2. 2
3. 5
4. 6

64.  Which of the following transformers is smallest?

1. 1KVA, 50Hz
2. 1KVA, 200Hz
3. 1KVA, 400Hz
4. 1KVA, 600Hz

65. The characteristic impedance of a loss less transmission line is given by

1. √LC
2. √L/C
3. 1√LC
4. √C/L

66. What does the SCR (short circuit ratio) of a synchronous machine yield?

1. 1/X_S( unsaturated ) pu
2. 1/X_S( unsaturated ) ohm
3. 1/X_S( adjusted ) pu
4. 1/X_S( adjusted ) in ohm

67. The spectral density of pink noise varies as

1. 1/f²
2. F²
3. 1/f
4. F

68. Electrostatic instruments are not free from the effect of

1. Frequency
2. Stray magnetic field
3. Stray electrostatic field
4. Temperature

69. Methods not used for measurement of medium resistance is

1. Kelvin double bridge
2. Ammeter-voltmeter method
3. Substitution method
4. Wheatstone bridge

70. For a given frequency the deflecting torque of an induction ammeter is directly proportional to

1. Current²
2. Current³
3. √current
4. Current

71. Which plant can never have 100% load factor

1. Nuclear power plant
2. Hydroelectric plant
3. Peak load plant
4. Base load plant

72. Which plant has the minimum running cost?

1. Nuclear power plant
2. Hydro electric plant
3. Diesel plant
4. Thermal plant

73. For the transient stability of a power system

1. dδ/dt>0 , dp/ds>0
2. dδ/dt=0 , dp/ds>0
3. dδ/dt<0 , dp/ds<0
4. dδ/dt<0 , dp/ds=0

74. DC voltage of the order of a few m V can be measured accurately using a

1. Moving coil voltmeter
2. Null-balanced potentio-meter
3. Moving iron voltmeter
4. Electrostatic voltmeter

75. An advantage with a VTVM over a non-electronic voltmeter is

1. Lower power consumption
2. Lower input impedance
3. The ability to measure wider ranges of voltage and resistance
4. Greater probability

76. Distances relay measures.

1. Current difference
2. Voltage difference
3. Impedance difference
4. Distance between two CTs.

77. Calculate the velocity of random thermal motion of electron at room temp.(300k)

1. 17 10⁵ m/sec
2. 17 10⁵ m/sec
3. 17 10⁵ m/sec
4. 17 10⁵m/sec

78. The p.u. parameters for a 500 MVA machine on its own base are:

Inertia, M= 20 p.u.; reactance, X=2 p.u.

The p.u. values of inertia and reactance or 100 MVA base, respectively, are

1. 4, 0.4
2. 100, 10
3. 4, 10
4. 100, 0.4

79. The value of R for which the PMOS transistor in figure will be biased in linear region is

1. 220 Ω
2. 470Ω
3. 680Ω
4. 1200Ω

80. An intrinsic semiconductor at absolute zero temperature

1. How a large number of holes
2. Acts as conductor
3. Acts as insulator
4. Has a few holes and a few free electrons.

Junior Engineer [Electrical] – Test Series 2018 – Buy Now

81. An electromagnetic field is said to be conservative when

1. ∇²E = με
2. ∇²H = με
3. Curl of the field zero
4. Divergence of the field is zero

82. The damping torque is produced by

1. Gravity control
2. Eddy currents
3. Spring control
4. Utilizing thermal effects

83. DC current cannot be measured directly by

1. Induction ammeter
2. Thermal ammeter
3. Ballislic galvanometer
4. Electrodynamics ammeter

84. In the ac bridge shown in the figure

The value of unknown impendence z₄ at balance is

1. (300 + j100) ohm
2. (100 + j150) ohm
3. ( 0 + j150 ) ohm
4. ( 100 – j150 ) ohm

85. Consider the following statement in respect  of IGBT:

1)   It combines the attributes of MOSFET and BJT

2)   It has low forward voltage drop.

3)   Its switching speed is very much lower

4)   It has high input impedance

Which of the statements given above are correct?

1. 1,2,3 and 4
2. 1,2 and 4 only
3. 1,2 and 3 only
4. 3 and 4 only

86. The sensitivity of a voltmeter using 0 to 5mA meter movement is

1. 200 ohm/volt
2. 500 ohm/volt
3. 100 ohm/volt
4. 50 ohm/volt

87. The phenomenon of creeping occurs in

1. Voltmeters
2. Wattmeter
3. Energy meters
4. Ammeters

88. The starting torque of a capacitor start motor is

1. Zero
2. Low
3. Same as rated torque
4. Same as 3 phase induction motor

89. Which single phase a.c. motor will you select for record-players ad tape-recorders?

1. Hysteresis motor
2. Shaded pole motor
3. Reluctance motor
4. Two value capacitor motor

90. Thevenin’s  equivalent circuit consists of

1. Series combination of R_Th, E_th and R_L
2. E_Th and R_Th in series
3. E_Th and R_Th in parallel
4. Parallel combination of R_Th, E_th and R_L

91. Why is a ring main distribution system preferred to a radial system?

a. Voltage drop in the feeder is less

b. Power factor is higher

c. Supply is more reliable

Select the correct using the code given below:

1. a and b only
2. b and c only
3. a and c only
4. a,b and c

92. In ac connected circuits the product of voltage and current is known as:

1. Power
2. Real power
3. Resistive power
4. Apparent power

93. Two wattmeter connected to measure the power in a balanced 3ф load will indicate same reading when load p.f. is

1. Zero
2. Unity
3. 5
4. None of these

94. Norton’s theorem is

1. The same as Thevenin’s theorem
2. Converse of Thevenin’s theorem
3. Cannot say
4. Same as Newton’s theorem

95. The relative permittivity is

1. Dielectric constant
2. Dielectric strength
3. Potential gradient
4. None of these

96. The current flow through the solution of an electrolyte is carried by

1. Free electrons
2. Molecules
3. Ions
4. Atoms

97. In an R-L series circuit, line current

1. Leads the applied voltage
2. Zero
3. Lags behind the applied voltage
4. infinity

98. In star connected supply system

1. Line current is equal to phase current
2. Two voltages are used
3. Phase sequence can be easily changed
4. It is simple system

99. Shunt are generally made of

1. Zinc
2. Copper
3. Gold
4. Manganin

100. The d. c. motor equation is

1. V=E _b+ I _a R_a
2. E _b=V +I _a R_a
3. V =E _b– I _a R_a
4. E _b=0

Junior Engineer [Electrical] – Test Series 2018 – Buy Now

Read more: ॥ Part-3 ॥ Part-1 ॥ 

If you want us to post answer key of this paper, do let us know in the comment section.