Answer / debasis

Resulting neutral current. Generally lighting system has
this type of unbalance. If neutral is not provided then
star point will be shift from its ideal place caused
overvoltage in one or two phase(s).

Answer / vinod kumar t

unbalanced load wil cause to flow of negative sequence
current which will heats up the alternator and hence it
effects insulation failure

Answer / ravi teja.a

Resulting flow of neutral current. Generally lighting
system has this type of unbalance. If neutral is not
provided then star point will be shift from its ideal place
to new place with the phase angle related to phase(which
has the higher current value in mentioned phases)caused
over voltage in one or two phase(s).-------is the correct
answer.

Answer / ramesh.r.t

If the supply voltage must 440vac 50Hz in star or delta
connection of motor or alternator stator pitch factor either
phase angel are changed.

What is the generating voltage of a power station consided generally?

20 Answers   L&T,

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Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

3 Answers  

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hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers  

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which is better 50 HZ supply or 60 HZ supply?

6 Answers  

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A Generator is in running condition and Rotor earth fault alarm is coming.How to check on line(i.e in running condition) whether there is actual earth fault in rotor or not.

0 Answers  

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When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?

0 Answers  

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Active power= VI COS FI But incase of leading power factor ( more than unity), may we use other formula ? because the cos fi (value of cos thita) should not be grater than one.

2 Answers  

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I am getting differential earth fault in my transformer realy , i have checked all its CT & control wiring but do not get fault, Please help

6 Answers  

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Negative feedback circuit is an implication of ? -Shunt shunt -Shunt series -series series

1 Answers  

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In case of delta/delta transformer if the one phase is blown out then what will be secondary line voltage ?

4 Answers  

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hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

0 Answers  

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how motor should be connected i.e star-delta or star-star or delta-delta ?

3 Answers   GSE,

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