What is the difference between AC Drives and DC Drives?

14 Answers   College School Exams Tests, La-Gajjar Machineries, LG, Schneider, SMEL,

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what is meant by differential protection of transformer

1 Answers  

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why protection and metering CT's are always connected in star why not in delta?

5 Answers   Reliance,

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Why a ballast and ignitor is required in MH and other lighting fixtures

2 Answers   Future Group,

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How shall i design a liquid rotor starter

0 Answers  

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75kw drive operated motor current fluctuation from(85-130)ampere.current setting in drive is 130amp.sometimes motor trip when current limit cross 130amps.I change the drive. still current fluctuate between 80-130amps but in this time motor not trip,current setting in drive is 130amps.where is the problem?

1 Answers  

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After synchronization with grid how to maintain the power factor in lagging or in leading? if lead of lag what is the problem?

3 Answers  

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how much current capacity 250 amp. mccb please tell me about whats are the reasons to trip 2 or 3 times in a night. and what are the steps to short out this problem

1 Answers   Havells,

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what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

0 Answers  

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3,12,24,33,_ ,75,150 Find the missed number in this sequence

2 Answers   HCL,

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I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz

0 Answers   RRB,

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What is the required bending radius requied at the time of cable laying?

1 Answers  

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