what's the meaning of the negative going half cycle in the circuit containing a bulb and a switch in series with a input ac source. i mean what happens in the -ve cycle. the dir. of current changes or any other thing. if dir. changes then why we use fuse in only phase wire.

2 Answers  

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What is the difference between Dielectric and Insulator

9 Answers  

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how 650 volts creates? where is use?

0 Answers   DCL,

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What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?

0 Answers   Haldia,

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Generally we denote power in 'p',voltage in 'v'but why can't we denote current in 'c' instead of I.

4 Answers   Bhel,

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i am working in a grid substation,TNEB having 13 yrs experience. Am I eligble to get apply for c licence now?

3 Answers  

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What do you understand by avr?

0 Answers  

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Why we does earthing for transformer neutral point

5 Answers   amps, DLF,

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the problem faced on star or delta winding connection??

0 Answers  

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why 1.7Uo for HV cable Hi pot test?IE standard why?

0 Answers   ABB,

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what are safety measures in /control in diesal engine/ explain them?

0 Answers  

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WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED

4 Answers   L&T,

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