Answer Posted / chandrashekhar sahu

The rating of any machine depends on the factor that always
remain same at any condition. In case of a transformer the
multiplication of voltage and current for primary and
secondary side remain the same at all load conditions. so
the transformer rating denoted as VA.

draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups 

1921

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how to select energy meter? have any calculation?

2392

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how to calculate maximum current

1743

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1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?

1542

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Electrical Engineering

1509

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what is dry and wet frequency withstand voltage? why & where it is used??

1783

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explain working principle of earth leakage relay

3081

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What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

1432

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delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

1546

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oltc of a transformer, how it works? and what are the equipment consist of describe briefly?

1571

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what is servo motor & how does it work.

1510

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please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com

1518

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Igfet is a

1202

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how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

1748

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what is the function and use of cable differential protection relay?

2397

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