Answer Posted / rabi

A negative line voltage helps to reduce the corrosion from
electrochemical reactions occurring on a wet telephone line.
Also -48v DC is more stable than +48 volit, so -48 V is
preferred.

What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

2128

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how to generator maintenance (A Check, B check,Etc)

2267

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If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.

1929

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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

1903

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hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites

2106

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Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.

2047

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What is trip and closing coil in cb? Why need of them

1479

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how solar power plant energy meter multiplication factor

2060

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What is the difference between electrical earthing and electrical grounding?

1111

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If I want to connect a capacitor bank on the HT side of a 11kV/415V, 3 phase delta-star distribution transformer to supply Reactive power to it..what practical specifications of a Capacitor bank that can i've??please reply..

2464

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What will be the size of copper cable (each for 3 phase and 1 neutral) from Service connection Kit-Kat to Panel Board (i.e. to main switch) for a 6 pole 3-phase AC induction motor of 200 H.P. capacity? Amp-255 A, Frequency:- 1450 rpm.

1932

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What is the main use of rotary phase converter ?

1115

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List the power rating of any 5 important electrical appliances used in houses.

2006

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Discuss about gear cutting machines.

1186

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what is the IPC ? & what the uses ?

1464

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