in electric lamp what is ballast. y its needed to start & stop lamp. what is ballast ckt.

0 Answers  

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why the voltage is in digit of 11/33/132/220/440 please send me on shukrerabbi_abkhalil@rediffmail.com with thanks

3 Answers  

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What are the types of transformers according to the arrangement of iron cores?

0 Answers  

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why is the core of the underground cable is spiral in shape instead of straight?

8 Answers   Mecon,

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what is pilot wire protection? wer is it using?

1 Answers  

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TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?

0 Answers   ABC,

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what is the different between earth leakage relay and earth fault relay?

5 Answers   ME,

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How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

3 Answers  

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can we use 220 volt 15 w a.c. lamp on 220 volt d.c.

11 Answers   Philips,

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Which lamp will fuse first(1)20(2)40(3)200 three lamps will fuse together

2 Answers   NTPC,

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What is application of isolation transformer & How it works.

2 Answers   BARC,

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how do you find making current and breaking current of the circuit breaker

1 Answers  

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