can anybody send the rrb chennai &rrb bopal question papers of 2006&2007.My exam is on 12 oct 2008.Its urgent

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what is your majour contributions in your present job

0 Answers   ESL,

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why weight is put on pulley?

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what is soft starter? what is the difference between soft starter and star delta starter?

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What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?

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If I have 3 essential main switch board and 3 incoming electricity ,but only 1 genset running is that possible.

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what do you mean by linear and bilateral network?

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how can we calculate the current

3 Answers  

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If there is no problem with the electronic circuit and regulator then why the motor start rotating at low value of regulator with full speed both at laod and no load??? and if my judgement of circuit is wrong then what is your openion?

1 Answers  

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we all know that in transformer, voltage and current are inversely related i.e. Vp/Vs= Is/Ip....so in standard CT..we have a ratio of 200/5...that means our voltage should increase by ratio of 40..althoug that is not the case...because that requires high insulation level.and pratically not feasible......can anybody clarify my ques.......thanx

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1. What does mean of "PS" stand for Diff. CT class? 2. What is the formula of KW for 1Phase load inturms of voltag,current & P.F.?

4 Answers   Hero Honda,

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Why cannot we insulate HT over head cable to avoid ionization of air around the HT Cable?..By this we can minimise corona loss also..

1 Answers  

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