#1
6th December 2014, 12:33 PM
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RRB Junior Engineer Exam Model Question Paper
Would you like to provide here Railway Recruitment Board (RRB) Junior Engineer exam model question paper???
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#2
6th December 2014, 01:25 PM
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Re: RRB Junior Engineer Exam Model Question Paper
You are looking for Railway Recruitment Board (RRB) Junior Engineer exam model question paper, I am giving here: RRB JE Question paper 1. A resistance of 10 ohm is connected across a supply of 200V. If resistance R is now connected in parallel with a 10 ohm resistance, the current drawn from the supply gets doubled. The value of unknown resistance R is (a) 5 ohm (b) 20 ohm (c) 10 ohm (d) 15 ohm Ans : c 2. Kirchhoff’s first law is also called as (a) voltage law (b) Current law (c) Mesh Current law (d) All the above Ans : b 3. Find the total resistance when four 3 Ohm resistance are connected in series (a) 3 ohm (b) 12 ohm (c) 14 ohm (d) 8 ohm Ans : b 4. The practical unit of power is (a) Joule (b) Ampere (c) Watt (d) Weber Ans : c 5. Form factor of a sine wave is (a) 1.414 (b) 1 (c) 0 (d) 1.11 Ans : d 6. The unit of resistance is (a) Mho (b) ohm-m (c) Ohms (d) Amps Ans :c 7. Unit of impedance is (a) Ampere (b) Volt (c) Ohm (d) mho Ans : c 8. The close path of the flux around any current carrying circuit is referred as Circuit. (a) Magnetic (b) Electric (c) Electromagnetic (d) None of these Ans : a 9. The current flowing in an electrical circuit is due to the existence of (a) mmf (b) emf (c) Resistance (d) Reluctance Ans : b 10. The magnetic flux flow through a magnetic circuit is due to (a) mmf (b) emf (c) Resistance (d) Reluctance Ans : a 11. The on-line UPS is also called as a. Stand-by UPS b. Line Interactive UPS c. Off line UPS d. Current line UPS Ans. b 12. ________ is used to convert alternating current to direct current. a. Transformer b. Diode c. Resistor d. Transistor Ans. b 13. The supply voltage varies sinusoid ally and has a frequency __________ Hz. a. 60 b. 50 c. 20 d. 10 Ans. b 14. Expression for magneto-motive force is (a) N/I (b) 1/NI (c) I/N (d) IN Ans : d 15. Unit of mmf is (a) Ampere /Volt (b) Ampere- turns (c) Volt (d) Volt/Ampere Ans : b 16. Magnetic field strength is equal to (a) mmf. L (b) L/ mmf (c) mmf/ L (d) 1/mmf.L Ans : c 17. Peak inverse voltage of bridge rectifier is as that of centre-tap circuit. a. Same b. Twice c. Half d. Four times Ans. c 18. Peak Resistance of the diode is increased when a. Forward biased b. Reverse biased c. Both forward and reverse biased d. Either a or b Ans. b 19. The number of lines of force passing through the secondary coil S when unit current changes in the primary coil P are called (a) Self inductance (b) Mutual inductance (c) Self induction (d) Mutual induction Ans : c 20. Unit of flux (a) Amp- turns (b) Weber (c) Volts (d) Amps Ans : b |
#3
15th February 2016, 06:18 PM
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Re: RRB Junior Engineer Exam Model Question Paper
Hello sir I want to prepare for RRB Junior Engineer Exam so here can you please give me its Model Question Paper ?
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#4
15th February 2016, 06:18 PM
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Re: RRB Junior Engineer Exam Model Question Paper
Hey as per your demand here I am giving you Model Question Paper for your practice Here I am giving you RRB Junior Engineer Exam Model Question Paper Question1. In relation to the synchronous machines, which one of the following statements is false? In salient pole machines, the direct-axis synchronous reactance is greater than the quadrature-axis synchronous reactance The damper bars help the synchronous motor self start Short circuit ratio is the ratio of the field current required to produce the rated voltage on open circuit to the rated armature current The V-curve of a synchronous motor represents the variation in the armature current with field excitation, at a given output power. Answer : (C) Question2. A 800 kV transmission line is having per phase line inductance of 1.1 mH/km and per phase line capacitance of 11.68 nF/km. Ignoring the length of the line, its ideal power transfer capability in MW is? 1204 MW 1504 MW 2085 MW 2606 MW Answer : (C) Question3. High Voltage DC (HVDC) transmission is mainly used for Bulk power transmission over very long distances Inter-connecting two systems with the same nominal frequency Eliminating reactive power requirement in the operation Minimizing harmonics at the converter stations Answer : (A) Question4. Body effect in MOSFETs results in Increase in the value of trans conductance Change in the value of threshold voltage Decrease in the value of trans conductance Increase in the value of output resistance Question5. A 2-port network has parameters of ABCD. If all the impedences in the network are Doubled, then A and D are remain unchanged B is doubled and C is halved A, B, C and D are all Doubled A and D are doubled C and B remain unchanged A and D remain unchanged C is doubled and B is halved. Ans : (a Lissajous pattern shown in a double-beam cathode-ray oscilloscope screen for two sinusoidal voltages of equal magnitude and of the same frequency but of phase shift of 300 electrical is A circle A straight line at 45 0 in the first and third quadrant An ellipse in the first and third quadrant An ellipse in the second and fourth quadrant Ans : (c To increase the range of a voltmeter A low resistance in series is connected with the voltmeter A low resistance in parallel is connected with the voltmeter A high resistance in series is connected with the voltmeter A high resistance in parallel is connected with the voltmeter Ans : (c |
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