#1
6th December 2014, 08:55 AM
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RRB Junior Engineering Electrical Exam question paper
Will you please provide me the question paper of RRB Junior Engineering Electrical Exam?
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#2
6th December 2014, 12:16 PM
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Re: RRB Junior Engineering Electrical Exam question paper
Hi, as you want the question paper of RRB Junior Engineering Electrical Exam so here I am providing you. RRB Junior Engineering Electrical Exam question paper 1. Kirchhoff’s first law is also called as (a) voltage law (b) Current law (c) Mesh Current law (d) All the above Ans : b 2. 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 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. The unit of resistance is (a) Mho (b) ohm-m (c) Ohms (d) Amps Ans :c 6. Form factor of a sine wave is (a) 1.414 (b) 1 (c) 0 (d) 1.11 Ans : d 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 Unit of flux (a) Amp- turns (b) Weber (c) Volts (d) Amps Ans : b 20. 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 |
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