what is wave trap? And how it works?

3 Answers  

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How to calculate the current of Highpressure Mercury Vapour Lamp?what is the basis?whether we have to consider power factor or not?

0 Answers   Divis Laboratories,

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What is the difference between MCCB, ACB & VCB

7 Answers  

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what will happen when reverse reactive power occurs in alternators?

3 Answers   Reliance,

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Comparative difference between 33Kv & 66KV for transmitting the load of 7 MW at a distance of 34 Km.

6 Answers   NHPC,

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1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

5 Answers  

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Why and which type of tertiary winding is used in most of the power transformer?

2 Answers  

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why use generator Earthing/Graunding.

4 Answers  

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voltmeter kya hota hy ?

2 Answers  

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wat is the role of reactive power in power generation?why we have maintain it.

3 Answers  

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what is doubling factor in making current of a breaker?

0 Answers   BARC,

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what is the ranje of HT cabel and LT Cabel.

1 Answers   Sail,

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