Answer Posted / bhadrappa

in a 3phase four wire system the voltage between two lines(R-Y,Y-B,B-R)is said to be line voltage, the voltage between any one of the three lines and neutral(R-N,Y-N,B-N)is said to be phase voltage.
its measured VL= /3*Vph

lamination figures

1922

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diff b/w elcb and rccb

2346

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We have two parts in generator, electrical & mechanical. how it works?

2022

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Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?

2338

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at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

1722

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What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

2803

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how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

2170

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Why is a plain induction motor unsuitable for wide speed control?

2326

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what is doubling factor in making current of a breaker?

2111

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is the value of inductance depends upon the value of thitha in doubly excited machine??

2092

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How many turns are there in primary winding? (In Transformer)

1745

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Parts of machine and their discription in details with suitable photo

2110

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Why hydropower stations are preferred solution for meeting peak loads in grids?

1055

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please send me latest & previous years question papers for IOCL Technical level questions

1928

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Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.

1405

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