Answer Posted / ram

Starter is used for a motor to limit the high starting
current. During starting of a ac motor high current of upto
4-5 times the full load current.and then start/stop switch
on the motor

how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)

2383

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what is the constructional difference between a power transformer and potentian transformer?

1776

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what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

2003

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whit is 33kv power 300*300 cable full current with formula

1814

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what is the effect of earth on capacitance in 3-phase and 1- phase transmission line?

2373

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i need list of swg(standard wire guage) or area of conductor v/s current carrying capacity of conductor copper & alluminium...

1832

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1852

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How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.

2208

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Define peak time.

1157

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How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?

2302

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I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

15641

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Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph

2508

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why do we lay up the core of a cable?

2028

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In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem

1968

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How will polarity test of Dy5 Transformer ?

2274

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