Answer / shivaji holambe

Power Transfom
er will rate Kva.

At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?

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Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

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Neutral CT for 45MVA 132/11 KV YNd11 Transformer. NCT REF CLASS-PS or 5P20 with 20VA burden which is suitable.

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why neutral is neccessary?

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what happen when increase or decrease size of lamp,light.glass.

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why CERAMIC material is used in insulators??

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what will happen if a part of primary winding of a transformer is accidentally short-circuited?

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A 400KVA ,50HZ TRANSFORMER IS TO BE OPERATED AT 50HZ.THEN KVA RATING OF THE TRANSFORMER?.

4 Answers   GATE,

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WHEN SINGLE PHASE SUPPLY AS 220V, WHY THE 3 PHASE- 4 WIRE MEASURED AS 440 VOLTS INSTEAD OF 660 VOLTS (220 VOLTS PER PHASE i.e 220x3 = 660 volts ).

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what are the things that can cause a three phase motor to crawl?

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In HI POT test what is reason for applying the AC VOLTS and DC VOLTS in different applications what is the nessesity for this ?

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why is one voltage transformers (instead of three ) installed at the entrence of the incoming line in a substation.

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