The ratio of white balls and black balls is 1:2. If 9 gray balls is added it becomes 2:4:3. Then what is number of black balls ?

3 Answers   CTS,

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Can we convert off line transformer to on line transformer

0 Answers   NHPC,

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we are small scale industry in production of rice & rice bran. Pls let me know how to take contract demand for our industry.. (for information we have total 600.hp)

2 Answers  

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What is mechanical interlock?Explain the uses?

2 Answers   HSL,

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line vltage of three phase distribution transformer is 433v and phase voltage is 250v,but we required 230v for domestic distribution,then how we reduce phase voltage of transformer

5 Answers  

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what is the difference between kva and kw ?

5 Answers   TCS,

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What do u understand voltage reg. of an alternator?

0 Answers   IOCL,

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WHAT IS THE USE OF STARTER AND CHOKE IN TUBE LIGHT?

1 Answers   Siemens,

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what dose the arrow indicate in the symbol of power transformer?

1 Answers  

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what is the function of choke and starter in a tube light?

2 Answers  

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if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1 Answers   BSNL,

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1. What is differential relay? How it operates?

3 Answers  

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