Answer / ashish bawa

shunt coil is used for tripping the circuit breaker in auto system

Answer / suresh muthusamy

Shunt coils are normally used to tripping the breaker for internal or external fault.Normally shunt coil is open(Normally open)whenever its get fault that time its closing the shunt coil .once shunt coil is pick up breaker is trip.

What happend if we connect star point to ground of a star connected motor? And what will be effect on system and effeciency of motor?

1 Answers  

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what is the function of short circuit maintenance ct and droop ct.

1 Answers   L&T,

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what is the difference between brush & brushless dc motor explain its operation ?

1 Answers  

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What is SMPS,How does it works?

4 Answers   Bharti, TCS,

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Do we really need wheels for the transformer

1 Answers  

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What is superposition theorem?

0 Answers  

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why we use choke in tubelights nad other lighting fixer

1 Answers  

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Define motor & pump?

3 Answers  

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Why 4 pole generator generates more power and 6 pole generates less power campare to 4 pole

2 Answers   Julius Berger, Suzlon,

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what is the meaning of 0.5ohm Resistance

0 Answers   Vardhman,

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in our 6.6kv motor feeder[it is having two sources from Bus A&B] earth fault relay is acting, we checked CBCT connection and cable meggerd values found very good still earth fault acting during first two are three start after that it will hold. please clarify what was the reason. if same motor is starting from other Bus-A it will start.

1 Answers   Gasal, Voltech,

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why we used.c source in the field of the alternator , why not a.c source.

1 Answers  

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