Answer / sudhakar

non semiconductor

Answer / shiva ram

non semiconduter

when u are given a timer,push buttons and contactor, how do i practically make a star delta control circuit and a direct online control circuit?

1 Answers  

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what is fuction static switch in ups and tell me use parts name and fucion

3 Answers   Dalkia,

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stand by earth fault protection (51G) for transformer rating 2000 kVA,Dyn11,33/0.400 V. LV NCT ratio and necessary resistor and metrosil values how to calculate

0 Answers  

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what are the Alarm, Trip & Safety equipment (Issues) present in Power Transformers pls Mail it to ashokbabunhce@gmail.com

0 Answers  

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Min and  max capacities of VCB,ACB,ACCB,OCB,MCCB and MCB

3 Answers   apspdcl,

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Is it possible to use AC supply insted of DC supply in trip coil operation? if not, why?

5 Answers   HAL,

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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what is mean by unity power factor?why are u calling Resistivity load also unity power factor?

2 Answers  

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Is it true that IPT are more accurate than CVT for Measuring purpose?

2 Answers  

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What is the difference between split AC and Casste AC?

2 Answers   NTPC,

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we hav seen in electric engine of trains only 1 wired slidng conecctn is there frm ovrhead line,howevr to complete a ckt in dc postv n negtv two conection has to b there...so where is tht negative is been connectd or where it is grounded...?

5 Answers   ABB,

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The rating of Transformer are 11KV, 22KV, 33KV instead of 10KV, 20KV & 30KV?

2 Answers  

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