Answer Posted / l.l

Droop CT is used to control load sharing of the reactive
power between paralleled generators. Its output is mixed
with the phase voltage to result in a signal that will be
proportional to the lagging power factor. This is used to
adjust the excirtation current accordingly so that the
proportion of reactive power is shared between them.

Operation of isolators.

1832

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What are linear and non-linear systems?

1037

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for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

2031

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kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased

2584

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dg earth connect only in the amf panel or not why

2017

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What are the application of filter?

1007

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wish of these transformer uses oil?

1575

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What is big transformer parts and their function ? Ty

2138

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How is the percentage impedence of a transformer fixed at design stage???

1929

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Define the term factor of inertia.

2009

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In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?

3179

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what is the chemical name and formula of refrigarent R-134a.

2215

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what is the effect of earth on capacitance in 3-phase and 1- phase transmission line?

2307

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Explain what is electric traction? Explain few advantages of electric traction system?

1091

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We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's

1866

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