Answer / m.k.k

we don't check these things during pm. it is done during
commissioning time only

how much earthings are mendatory at a 25kva sub station?

3 Answers   Bhel,

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PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL

0 Answers  

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200-100/1-1A – Transformer Knee point voltage

1 Answers   AAPT,

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why root three is used and how its comes in three phase power system?

1 Answers   IEEE,

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hi... Can anybody give me description of type-2 coordination, IP protection, NEMA standards ? Thanks..

2 Answers   KSEB,

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transformers? power factor? machiences?

3 Answers  

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explain about the electrification in the Indian Railways? ie., how the power is taken and used to drive the train? explain with the block diagram??

1 Answers  

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how to decide choke rating for drive?

0 Answers   Reliance,

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If DG runing time neutral is disconnected what will be the effect in Engine and Electricial panel.

2 Answers   HP,

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what kind of battery is used in laptops

4 Answers   Pepsi,

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In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

0 Answers  

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why Power transmssion voltages are as 11kV,33kV,66kV,220kV and so on only?

2 Answers  

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