Answer Posted / k.prakashchandra

Large gens have field as rotor and field supply is given
with the help of collector rings (slip ring) and carbon
brushes from shaft mounted DC exciter or external excitation
panel .In case of brushless, DC excitation supply is given
directly from shaft mounted armature of the AC exciter
through the rectifiers.Its field is controlled from outside.

what parameters should we check to reduce the power bill

2332

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how unidirectional torque is produced in DC motor?

6795

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What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

2193

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salam,hi, i need to know what the spesification of 300amp msb...

2033

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WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?

2041

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how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?

2172

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Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

2495

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what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

2288

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Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing

1927

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how does a shunt reactor maintains the bus voltage???

2063

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if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

2075

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How to choose size of the cable w.r.to current carrying capacity ...

2212

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What is the role of feedback in a closed loop control system?

1083

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what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?

2079

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what id a dry type transformers and its function ?

1765

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