Answer Posted / padmanaban

Since Transformer is a Static device and it is having two
losses namely core loss and Cu loss. The core loss depends
on the Voltage (V) only, where Cu loss depends on Current
(I) only.So for this purpose the transformer always called
its rating in apparent power only(VA).

i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle

1982

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how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?

2649

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Main advantage of auto transformer over two windings transformer is that A it needs no cooling B it uses only one winding C core losses are reduced D it has simple construction

2954

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Draw a circuit diagram in which if button is open we can use socket and bulb as a series test circit and if button is close than simple we can use socket as any load purpose.

1882

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what is the efficiency of thyristor

1648

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Why colled 440V to 3-phase supply.

2155

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what is star delta starter? how it works? give its control and power diagram.

2100

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Why is a plain induction motor unsuitable for wide speed control?

2280

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hi can anyone pls tell me the eee interview core questions asked in l&t

2061

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I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

3297

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WHICH SIZE A.B.CABLE IS USED FOR 11KV.

2204

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Can anybody tell abt concrete encased earthing or grounding?

2065

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Which type of DG need Netral Earthing?

5312

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write down the formula of cable size in RM if current is 50Amp.

1342

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Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.

1746

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