Answer Posted / sandip g. kuvalekar

syncronizaing panel is used where one dg set syncronizaing
with two or more dg set when mains fail all dg start at a
time but after some time one will be on & other will be
stop as per load when load increased above 70% of the total
load the 2nd dg will be start & it syncronise with first
one & total load was distributed equally On that two dg set
& This process will go on

what is counter poise conductors

2215

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WHAT IS MEANT BY DERATING OF THYRISTOR?

3012

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hi guys please tell me the procedure for mesuring the coil resistance of 3ph induction motor?

1953

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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.

2111

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how to calculate mf when meter and cTPT detail are given

1895

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How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

2081

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How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point

1866

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What is meant by reverse polarity and how it can be fixed?

1306

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Explain about 3 phase motor fault current calculation with examples?

2998

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2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation

2350

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how to make an earthing certificate

2291

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What do you mean by passive circuit elements and why these are called passive?

1257

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what is the illumination level required for child play area?

2128

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Earth bits close or open. Which is correct

2025

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What are the advantages of vscf wind electrical system?

1138

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