which relay is better , instantaneous or IDMT relay .

2 Answers  

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which type of capacitor store high amount of energy for long time ? ( polarized or unpolarized )

1 Answers  

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what is the power ratio between power in star and delta circuit?

3 Answers  

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i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

0 Answers  

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why we use shunt in a rectifier system ?

1 Answers  

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Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

0 Answers  

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differance b|w ground, neutral&earth

11 Answers   Bhel, SKH Metals,

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What is the maxvoltage drop allowed at any healthy joint at full load ?

1 Answers   Kirloskar, Seyadu,

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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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it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

0 Answers   TATA,

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when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

1 Answers  

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state the working principle of incondenscent tube?

0 Answers  

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