Answer / kc ng

Normally for transformer oil temperature >80deg = alarm.
if oil temperature >90deg = tripping of VCB.

why cannot we use a freuency more than 400hz is used in aircrafts?

1 Answers  

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for leading power factor penalty by SEB why

2 Answers  

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what is the earth resistance

4 Answers   Micron Electricals,

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How power is transferred from one winding to another in an auto-transformer? A) electrically B) magnetically C( both a & b D) neither of above

3 Answers   ISRO,

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what is the difference between a feeder and a cable?

3 Answers  

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what are the difference between PLC and embedded

0 Answers  

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hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?

0 Answers  

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What is the difference between AC Drives and DC Drives?

14 Answers   College School Exams Tests, La-Gajjar Machineries, LG, Schneider, SMEL,

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how generator load test is conducted?what are the steps?

0 Answers  

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briefly explain principle of resistance welding

0 Answers  

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

2 Answers  

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Do closed loops systems require manual input?

0 Answers   Ericsson,

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