what is the earthing condition between earth & phase.

3 Answers   ABB,

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i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

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Why underground cables are used to connect transformers?In addition how are they again connected to lines after step up or step down?

1 Answers  

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Why reverse power relay is used?

12 Answers  

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How to identify the whether its an isolator or Breaker in MDB

5 Answers  

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how was the induction stove working?

3 Answers  

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What is a thermocouple, and it working principle?

2 Answers  

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What is the dependency of stiffness on load angle??

0 Answers  

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in power station power measuring unit is KW but in transformer is KVA why?

4 Answers  

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if 40 watt bulb has higher resistance then a 100watt bulb then according to joul farmula p=I^2R the 40 watt bulb more power consume then 100 watt bulb.

5 Answers  

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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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whenever a squirrel or a crow gets tangled near the out put of the feild transformer there is a discharge of 440 volts of current through the neutral due to which my appliances blow up causing a huge bang.will the RCCB help in these conditions

1 Answers  

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