Answer / john

in this condition motor get single phasing so it will be
tripped or its winding get burn

Answer / niranjan

The motor will keep on running for a while but the current will rise on the other two phases and the overload relay will fall out, if its properly set and the motor will stop if the overload relay is set to high the motor will burn out

in the start Motor will start to shake the if there is no protection devices for over-load on the motor it will simple explode:)
Three-phase motors also vibrate less and hence last longer than single-phase motors of the same power used under the same conditions.

Answer / rangan

IT'S RUN AT HIGH SPEED .

What is essential to prove safe isolation of electrical circuit?

0 Answers  

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in the Distribution system .which one is Most Economically used by Power Engineer ? a)3 Phase3 wire System or b) 3Phase -4wire System

6 Answers   APTransco,

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why does connected a indutor with mnsformeretering core of current transformer ?

0 Answers  

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what is the specific gravity of fully charged battery

14 Answers  

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At 765Kv, I have seen the use of PT at line side for metering and CVT for protection, although as far as my knowledge is concern, PT at this voltage level will have huge loss and more cost as compared to CVT as CVT can also perform same function of Protection and Metering? So my question is why use PT and not CVT for metering and protection in order to reduce the cost.

1 Answers  

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why single core HT cable need only one side earthing?

2 Answers  

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which is batter in construction job,ELCB or RCCB?

7 Answers   HCC,

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an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 Answers  

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What happen when increese more than 50HZ fequincy.

5 Answers  

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one hp 3phase motor what generate power factor

1 Answers  

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how does commutator convert a.c to d.c?

0 Answers   NRSC National Remote Sensing Centre, RBC,

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why would amp draw on neutral wire be as much as amp draw on the hot leg.

0 Answers  

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