is emf is indued if dc is passed through coil

5 Answers  

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We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?

0 Answers   ARDE,

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why single phase induction motors are not self staring ? how can we start the 1-phase Induction motor ?

3 Answers   BDL,

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what is the voltage and ampere rating of all range of HT conductor?

1 Answers  

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what will happen if a cw rotating altenator being synchronized to ccw rotating altenator

2 Answers  

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what are the compensations considered while designing a transmmision line.

1 Answers  

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I have current, kva How can calculate kv?

3 Answers  

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what is stray loss in transformer?

19 Answers   Vijai Electricals,

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What is meant by inverse definite mean time (IDMT)& definitemean time (DMT)?

5 Answers  

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I need to calculate the Battery bank back up for below configuration:- UPS - 120 KVA Battery Bank - 200Ah Volt of each cell - 12 V Total No of cell - 34 No's Can you please help me to get the battery back up time for above configuration...? along with formula

1 Answers   Wipro,

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Explain UPS

1 Answers   Powerica,

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1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.

0 Answers  

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