RRB JE electrical practice paper-2 | RRB JE Electrical

Ques.81. The quantity 53 × 10⁻³ is the same as

1. 0.053
2. 0.530
3. 530
4. 5.30

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Ques.82. An operational amplifier should have

1. Low output impedance
2. High output impedance
3. Zero output impedance
4. Infinite output impedance

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Ques.83. What is the power in the following circuit?

1. 20 W
2. 30 W
3. 40 W
4. 50 W

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Ques.84. In a three-phase supply, for detecting interphase fault, the number of relays required will be

1. Two
2. Three
3. Four
4. One

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Ques.85. The speed of the electrical  current in the conductor is

1.  3 × 10⁵ ms
2.  3 × 10⁷ ms
3.  3 × 10⁸ ms
4.  3 × 10¹⁰ ms

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Ques.86. India’s first high speed electric locomotive with 12000 Hp engine is manufactured by

1. Madhepura Electric Locomotive Factory (Bihar)
2. DLW, Varanasi (UP)
3. Chittranjan, West Bengal
4. None of these

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Ques.87. Convert the following decimal number to 8-bit binary 187

1. 11011101₂
2. 10111011₂
3. 10111100₂
4. 10111101₂

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Ques.88. Frequency domain of a periodic triangular function is a

1. Discrete sine function
2. Continuous sampling function
3. Discrete sampling function
4. Continuous sampling square function

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Ques.89. A constant load power means an uniform conversion of

1. Mechanical to electrical energy
2. Electrical to mechanical energy
3. Current to voltage
4. Voltage to current

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Ques.90. A single phase sinusoidal voltage of 140 V is connected to a 80 ohm load. The current in the circuit is

1. 1.35 A
2. 1.45 A
3. 1.75 A
4. 1.85 A

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