Answer / prabhakar sankle

Transformer functioning only with a.c supply.Because there is need mutual induction in coil and core.It couldn't happen with DC supply.

Answer / pavan sharma

If dc supply is given to xmer then pri wdg has no recatance so impadance is low due to low resistance so dc supply burn primary

what is wave trap? And how it works?

3 Answers  

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What descriptive information does the NEC require to be marked on all conductors?

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In generally how many earthing required for power

4 Answers  

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Grid fault level [KA]?

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Different STANDARDS (BS, IS, IEC etc) gives different informations on CT specification. How they correspons w r t each other (i.e I mean to say BS provides "knee point voltage" but IS does not, then how can i select CT)

0 Answers  

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how to find motor contactor rating and bimetalic relay rating? of 30kw motor which will operate on star-delta starter?

6 Answers   HCC, L&T,

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what is the best transformer oil breakdown voltage?

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how power saving takes place through VFD?

9 Answers  

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what happens when series resonance occurs?

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a starter used for squirrel cage induction motor?

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could you measure current in parallel?

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calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

0 Answers  

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