Answer / kiranbabu

Please buy RRB Model question Paper books n go thru dat

what is ups?how its works?and what is there in static switch how it works?

2 Answers   Bhel,

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why the under of transformer platform is filled with rock stones.

10 Answers   TNEB Tamil Nadu Electricity Board,

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How to calculate cable size in sq units based on motor rating is KW

2 Answers  

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what will be the energy loss =? Voltage drop = ? Conductor resistance at 20 degree C = ? Temprature convertion Factor at 50 degree c = ? on ACSR DOG Condutor at following data. distance = 4.8 kM Load = 2980 kWh Size of Conductor = 6/ 0.186 Volt = 11 kV.

1 Answers   Pakistan Atomic Energy Commission PAEC,

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How to calculate the 2500 Kva Transformer losses Primary 11KV Secondary 415volts

1 Answers   Laurus,

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why ahould you show client/engineer activities clearly on the project plan

0 Answers  

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What is water cooled chiller plant?

1 Answers   Gulf, IOCL,

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can any one tell me the formula for calculating the power and unit consumpetion

9 Answers   Avalon,

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1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?

0 Answers  

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what is the relation between voltage & frequency

11 Answers  

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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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how to set earth fault relay

1 Answers  

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