Why air circuit breaker off due to power failure?

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what is the ms flat constant for calculating earth mat design calculation?

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when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?

2 Answers   GATE,

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How do you reset circuit breaker?

1 Answers   Bhel, Kaveri Steels,

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I find that underground strip-armoiured,4core,LT PVC cables in an earthed power distribution sytem are occasionly found in charred condition-with no trace of it except ash. Is this because of no proper earth connection/continuity (giving rising to high armour resistance)in the joint enroute or because of insufficient capability (again due to high armour resistance)of cable-armour to carry fault current or due to neglected /unprotected overloading of the cable or due to high armour currents caused by power thefts where only phase(s) are unauthorisely tapped & at the point of poer consumption earth terminal is established by burring underground a not so good earthing rod (or using an underground water pipe for the purpose)

1 Answers  

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1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?

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Should power factor be low or high?

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how to calculate

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what is the difference between NC & CNC machine.what is the difference between equipment & machine tool

2 Answers  

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how actually an anti pumping device works? what is the operational principal?

2 Answers  

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What are disadvantages of capacitor

1 Answers  

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WHAT IS EDDY CURRENT LOSSES AND SKIN EFFECT LOSSES IN ELECTRICAL ENGINEERING

1 Answers   GAS,

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