Answer / suresh

Primary delta secondary star type stepdown transformer used for lighting loads.

Answer / amit

step down

why DG neutral is earth?

4 Answers   HP,

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can we run all LT motors at 360 volts which are normally rated 415+/-10% voltage rating

2 Answers   Meinhardt,

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If current flows through conductor it produce magnetic field only.but if current flows through vaccum both magnetic & electrical field produce why ?

4 Answers   NTPC,

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operation principle of a generator? Gss, Diesel and HFO which is better and why?

1 Answers  

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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advantage,disadvantage,aplication of sensorless direct torque control of induction motor

0 Answers  

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What is the Minimum winding resistance of motors ( small & big)? referance range

0 Answers   TATA,

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current cyring capacity of .75sqmm copper cable

2 Answers  

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what is sinwave ups

1 Answers   Exide,

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How to find HT side and LT side(of a transformer),with the help of a voltmeter?

1 Answers   Odisha Power Generation Corporation OPGC,

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what is sevice settings for mccb?How can be it setted?

1 Answers  

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do you have some of interview Questions in power and genrator section in general whith answers

0 Answers  

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