Answer / hardik sakariya

when due to any sudden disturbance in the power system any
surge(switching or lightning) is produce than the voltage at
which the Circuit Breaker opens is called the transient
voltage and the voltage at which the circuit breaker extinct
the arc and either isolate or restore the fault is known as
recovery voltage.

In synchronous generators field is rotor and armature is stator.Can we take the output at the rotor in case of synchronous generator by the dc excitation on the stator?

2 Answers  

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at what base you will tell the direction of rotation of dc motors and generators?

0 Answers  

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in 11kv generators the neutral point is connected to earth via earth coil while in the 33 / 11 kv transformer the neutral point is connected to earth via earth resistor why? 

1 Answers  

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figure of phasor diagram of transformer when full load or no load ?

1 Answers   Swastik, TCS,

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What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

0 Answers   BFL,

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

2 Answers  

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how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

0 Answers  

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Why indian power system in 11kv,22kv,33kv,66kv,110kv,220kv ? 2) Why ups required dedicated earth?

8 Answers   Energia, L&T, Sail,

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what is mean by induction & conduction principle ? how they differ from each other ? thank you

1 Answers  

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I want to know that a 160kva diesel generator contains capacity of 160kva on each phase like R=160 Y=160 B=160 total RYB=480kva or it is total capacity of all there phases like RYB=160kva ... thanks in advance ...

2 Answers   jlpl, JP Saraswat Engineers,

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why knee point voltage should be high in Ct for differential protection

1 Answers   NTPC,

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If current flows through conductor it produce magnetic field only.but if current flows through vaccum both magnetic & electrical field produce why ?

4 Answers   NTPC,

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