Answer Posted / narmatha

if secondary terminal is open circuited then due to absence
of counter amp-turns of the secondary,the unopposed primary
m.m.f. will be set up an abnormal high flux in the core
which will produce excessive core loss with subsequent
heating and high voltage across the secondary terminals.

Is it possible to measure the voltage of a battery from a single terminal?

1238

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What is the working principle of servo motor? And explain it.

1411

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how can we say that stator magnetic field rotates with synchronous speed?can we derive?

1310

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how the works electronic energy meter?

1673

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After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?

1285

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please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

1285

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i have a 1500kVA transformer what is the kWH meter i need to use?

1207

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oltc of a transformer, how it works? and what are the equipment consist of describe briefly?

1574

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i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

1468

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When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

752

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What is the control action?

641

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why the India electrical supply transmission loss is high when compare to us

1563

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Why Stabilising Resistor used in REF circuit ?

2733

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What happens when ac supply is given as excitation voltage instead of dc supply

3150

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new 90kw motor installed so how I purchased cable ,fuse,etc please give me technic for cable selected why always capacitor delta connection

1367

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