Answer / k.prakashchandra

May be due to over excitation.If you are using AVR ,run on
manual channel to check the PLC and auto channel

Answer / nithi

mr.prakash answer is correct........over excitation of one
DG set & under excitation of another Dg set will lead to
this type of problem.so, check both DG set AVR circuitary
(voltage set value).

ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

0 Answers  

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who is ohm's and his law ?

1 Answers  

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To transmit the Power which must be present…? a) Reactance b) Resistance c) Capacitance d) none of above

9 Answers   ABC,

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what's the reson that,Load is not same on VFD I/P and O/P Side.whenever DOL condition load is same I/P and O/P side.

1 Answers  

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for any load, what happen if we use the cable rating above its normal rating

2 Answers  

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How many types of Transformers are there?

8 Answers  

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0 Answers   BMRCL,

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why ups in kva ratings?

2 Answers  

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when motor taking high amp what happen.

4 Answers  

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what is the speed of current?

29 Answers   Su Kam, TATA,

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May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

0 Answers  

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