Answer Posted / mustafa

it is due to mechanical problem
if one pole does not open possibility of heavy arching,for
that reason only AB switches provided on both side of the
breaker

Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss

3270

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how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

1967

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Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

2090

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solar energy light efficiency & disadvantages?

2106

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State how to produce a constant rotating field by application of alternating currents to stator armature of a three-phase squirrel-cage induction motor

2480

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wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?

1921

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what are the different kind of cables used for transmissions?

1227

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in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

1920

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Maintenance of transformer???

2253

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Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

1422

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what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA

2793

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Why single phase induction motors are not self starting ?

1645

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how you will decide the distance between the power transformer and its fencing

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diff b/w elcb and rccb

2284

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How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?

2108

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