Answer Posted / balaji

The inductive reactance depends upon the frequency.If
frequency inreases XL will increase.Losses will also
increase.

for compensate 315mh inductance ,how many capaciance required?

2059

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why Lightening Arrester Probe sharp at Top of telecom tower.

1572

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What is star-delta transformer?

1202

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Why in ESP Positive earthed

3089

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all interview questions with answers of ntpc (2000-2009

2218

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In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?

1439

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

2240

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How many types of electric motors are there?

1209

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Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

2258

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Why the earth to phase voltage is high 250 compare to other two phases

1524

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The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

2338

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We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

1860

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In 90 kva alternator that produce the output voltage is 115(p-n),200(p-p) at 1500 rpms means what ampere it produced ?

2036

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wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?

2017

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what is the chiller and working principal

2340

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