Answer Posted / logeswaran

AVR is nothing but a automatic voltage regulator.it ill
regulate the field input based on terminal voltage either no
load or full load condition.

if AVR fails in alternator...?

The alternator output we will get only residual voltage at
no load condition based on the residual magnetism.

The residual Approximately for 1 & 3 phase 4 pole alternators:
min:4 V to max: 90 V.

When and where resistance earthing is used ? How to calculate the time constant for earth fault

1824

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What is the classification of hydro projects based on installed capacity?

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hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?

1923

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TRANSFORMERS WITH DC SUPPLY

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what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

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what is the k var ratting of 1250kva

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What is tan delta & PPM in transformer? and whats its IS value?

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please tell me when we start motor without load in star or delta connection whose current above condition,pl write formula

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what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

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sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

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What is dynamo?How it works and what is the function of dynamo in a DG.

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An automatic water heater is an example of which type of control system?

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In EB metering we face problem kva jump even in no load condition.can any one help to control this

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what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?

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why the check zone and main zone are used for Busbar Protn. scheem?

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