Answer / sunil

because,negitive polarity reduce corona effect and less
interfearence in communication lines

What is the direction of rotation of blades in a table fan and in a ceiling fan ?

11 Answers   Power Grid,

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critical losses of transformer

3 Answers   EEEC,

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In A.C systems, fuse is placed in phase-in order to disconnect the circuit during faulty condition. But, what is the reason for putting "LINK" in neutral istead of connecting through (same) wire.

3 Answers  

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Which type of gas used in cylinder (VCB)?????

15 Answers   ICSA,

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How can i modify the design of 3 phase induction motor to be as 3 phase synchronous motor??

2 Answers  

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i have 400/230v transformer and didnt done the neutral eatrhing. i connected one lamp to one phase and neutral to the earth. but the lamp is not glowing. again i connected neutral to earth and repeated the same. then the lamp is glowing. in the first condition i tested with a line tester also, at that time the tesrer is glowing what is happening i dont know can any one help me?

1 Answers  

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Actually why the transformers are rated in KVA.?

4 Answers   BSL, Engineering,

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how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.

0 Answers   Hyundai,

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what different in delta & star connection in motor?explain

5 Answers   Bhushan Power Steel, Hyundai, KPCL, L&T,

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what do you mean by cl PS CTs? What are technical details required for it's manufacturing?

1 Answers  

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what is difference between RCB,RCCB &RCBO?

3 Answers   ABB,

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What will happen if 230V DC motor connected to 230V AC Supply?

15 Answers   Ashok Leyland, BOC, JSW, ONGC, RRB, TRB,

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