Answer Posted / aladdin

hi,
earthing one of the most important protection in your system it protect human of the static voltage that occur in ur system that might kill in some cases and it protect the signal of the electronic devises from noise and damage.

In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

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from which subjects most of the technical que will b asked for hpcl(electrical).pls help me

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plz send me the placement interview question and answers of whizchip(technical and apttitude)..i have an interview in next.

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What is the cut-off rate?

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what is errection pcbs?

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What is difference between isolator and circuit breaker?

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what is basic difference betmeen normal & flame proof motor??

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where we use the SFU & FSU?

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what is alluminium arm in ab conductors

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Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

1632

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what is the difference between oil surge relay and buchholz relay.

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sir iam from electrical and electronics branch ,can i appear for the hpcl offline requirtment? if yes please mail me on vikram_raju25@yahoo.co.in

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Why the arms of delta in a delta-wye power transmission system are kept constant??

1869

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I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.

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how to select proper cable for ct wiring so that drop within the limit.

1968

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