Answer Posted / sri devi

if the dc supply is given the transformer will not work.
because transformer acts on mutual induction principle. so
the alternating current required to run the transformer.

temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%

1924

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how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???

2027

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how we test a 3 phase motor on single phase supply....? HOW WE RUN A 3 PHASE MOTOR ON SNIGLE PHASE. supply for testing..? how we verify of a 3 phase motors 6 wire & name thame a1/a2/a3..b1/b2/b3 and c1/c2/c3 for connecting star delta starter ........i have only 1 phase supply ? help forum..........

5199

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please explain to me how to calculate current,voltage,resistance with formula??

1436

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WHY BREAKER ARE USED IN SUBSTATIONS?

2236

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any one can explain the stages of a knee point which is taken during ct magnetising curve.

1787

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WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

2507

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at what base you will tell the direction of rotation of dc motors and generators?

1137

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What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1848

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some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

1764

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Operation carried out in thermal power stations?

1146

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IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

2570

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what is star delta starter? how it works? give its control and power diagram.

2096

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What are the functions of temperature scanner in power transformer?

2188

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what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

3416

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