how to get 48 V DC I have ... 1. 12 volt power supply board 2. DC power supply ( max. 30 v) 3. 9 volt batteries ( 2 - not chargeble)

2 Answers  

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in case of induction motor when overload condition or any short ckt. why stator winding burn not to be rotor winding

2 Answers  

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What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

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Please brief working principle & construction of permanent magnet AC Servo motor

0 Answers   DRJ ARDE,

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what is difference between fuse and breaker?

6 Answers   ABB,

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What types of question are done for diploma students in aptitude test

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What is the specification of service line (ie from electrical post to cut out) used by electricity boards used in india.i mean which material,its size etc.. please give the answer at lalkishan.p@gmail.com

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definition of transformer

10 Answers  

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IN star -delta motors normally first operated in star mode {absulated given (r-y-b) phases after one miute change in delta mode in this case i am change phase sequience for example R -PHASE TO CHANGE Y-PHASE ;Y-PHASE TO CHANGE R-PHASE SO THIS TIME MOTOR WILL HAPPEN RUNNIG MODE EIGHTER(OR) STOP MODE(TRIP MODE)

6 Answers   MacLellan,

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what are the types of basic earthing?and why we are doing that?

3 Answers   Bharti,

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diff b/w normal grounding and resistance grounding

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Define what is difference between fuse and breaker?

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