Answer Posted / thiyagarajan

For Dyn11 its primary will be delta and secondary will be
star to give path to the unbalance current to earth

List the advantages of star-delta starter with induction motor?

948

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what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

1599

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we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.

1962

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1873

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As per the Anchor capstan motor specification, full load current is 200A. starting current is 1750 A and acceleration time is less than 8 seconds. Please guide for selection of cable size.

1803

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Why are cables rated for 40 KA for 0.25 Sec fault current rating?

1887

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can anyone send me some sample question regarding power grid corp

2160

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How many types of electrical earthing are there?

1101

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In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

2092

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How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

1913

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WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME

1831

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when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

2015

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How to back charge the Gas turbine generator

2095

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Why is ignitor used in sodium vapour lamp

3486

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Why use the vcb at high transmission system ? Why can’t use acb?

1267

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