RRB JE electrical practice paper-2 | RRB JE Electrical

Ques.31. Booster are basically

1. Inductors
2. Capacitors
3. Transformer
4. Synchronous Motors

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Ques.32. Conductors for high voltage transmission line are suspended from tower to

1. Reduce clearance from the ground
2. Increase Clearance from ground
3. Reduce wind and snow load
4. Take care of extension in length during summer

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Ques.33. The trigonometric Fourier series of an even function of time does not have the

1. DC term
2. Cosine term
3. Sine term
4. Odd harmonic term

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Ques.34. An example of a discrete set of information/system is

1. The trajectory of the sun
2. Data on a CD
3. Universe time scale
4. Movement of water through a pipe

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Ques.35. A resistor is connected across a 30V source. The current in the resistor, if the color code is red, orange and silver is

1. 0.32 mA
2. 0.87 mA
3. 1.32 mA
4. 2.57 mA

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Ques.36. How much is the base-to-emitter voltage of a transistor in the “ON” state?

1. 0V
2. 0.7 V
3. 0.7 mV
4. 7 V

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Ques.37. For what kind of amplifications can the active region of the common-emitter configuration be used?

1. Voltage
2. Current
3. Power
4. All of the above

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Ques.38. What is the components of the most specification sheets provided by the manufacturer?

1. Maximum rating
2. Thermal characteristics
3. Electrical characteristics
4. All of the above

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Ques.39. Refer to the figure, the value of V_BC is

1. −4.2 V
2. −7.2 V
3. −8.2 V
4. −9.2 V

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Ques.40. A 0.85µF capacitor is across a 2 kHz sine wave signals source. The capacitive reactance is

1. 47 Ω
2. 37 Ω
3. 4.70 Ω
4. 0.470 Ω

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