Answer Posted / avi

Impedence is the phenomenon which resist the flow of AC
current. In high impedence circuit current will be less and
in low impedence ciruit current drawn from supply will be
more.

if 6 earth pit value is 1.5 ohm then what should be the number of earth pit to make the value .8 ohm

1719

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how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1416

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Why we use duplex coil and hook switch in telephone system?

4595

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What is order of the system?

719

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Name two low frequency oscillators?

911

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define displacement & magnitude ?

1401

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How many capacitors using in LT panel as per Govt rules?

1517

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Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

1111

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What are the different types of hydro schemes?

682

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What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

1315

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What is FTA card? How it works?

1751

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model question paper for supervisor trainee

1613

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A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

525

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Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.

1625

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Why is better to have a minimum ceiling voltage of 250% than 160%?

1416

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