WHY HOLDING CONTACTOR OF MOTOR STARTER IS CALLED NO VOLT COIL.

3 Answers  

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WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

0 Answers   Siemens,

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Advantage of earthing transformer

2 Answers   EID Parry,

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why the rating of dc generator is in kw where as rating of alternator is in kva?

3 Answers  

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HOW DOES ONE SELECT A TRANSFORMER PHASOR GROUP IE, WHETHER A STAR-DELTA TR OR A STAR-STAR OR A DELTA-DELTA, ETC. TRANSFORMER IS MORE SUITABLE FOR A PARTICULAR KIND OF LOAD OR WORKING CONDITION???

3 Answers   KPTCL,

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What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current

0 Answers   ABB, Jindal,

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Whot is the braking capacity for MCCB. How we select different braking capacity.

1 Answers  

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how to identify small motor and generator?

1 Answers  

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what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?

0 Answers  

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To test Transformer we give HT side 440V to see wheather that it is producing 17.6V on LT to verify Voltage ratio is correct or not but when we give the 440V voltage to LT side then what will happen to HT voltage ?

3 Answers   Aditya Birla,

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Wat will happen if R-phase of an alternator is connected to B- Phase of AMF panel fed from alternator

4 Answers  

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If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

0 Answers  

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