Answer Posted / chr

why there is no neutral in motors???

What are the different methodes for calculating the short circuit Current?

1492

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i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.

1555

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we need a ntpc previous papers

1436

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Explain different types of d.c motors? Give their applications

638

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Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.

2087

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send me any model test paper of clerical post of state bank of india.......

1372

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Define early construction of human being

1425

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Is there any type of starter for DC motor other than two point,Three point and Four point starters?

1646

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what is positive , negative & zero equivalent system resistance

1419

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what is the chiller and working principal

1853

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How to calculate that clean water supply in one Day from 150 KLD STP?

1547

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Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

1543

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WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

1428

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This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

1995

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How can we measure the residual voltage in dc machines?

1207

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