Answer / g .senthilkumaran

It is always better to give DC supply to the field then
only we can get continuous output i.e sine wave from the
stator of an alternator.

Answer / hansraj

the dynamical induced emf needs a constant flux i.e time
invarient flux
if we give the ac input it produces alternating flux in the
rotar field and dc current not producec e.m.f. is induced
so the
electrical power will be zero

Answer / veeru

the dynamical induced emf needs a constant flux i.e time
invarient flux
if we give the ac input it produces alternating flux in the
rotar field and then there is no emf is induced so the
electrical power will be zero

When batteries are connected in series the voltage increases but the current remains unchanged, how can this be? When you consider ohm's law. i.e. If voltage increases, current increases, providing resistance remains the same.

10 Answers  

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if single phase is having 220v supply then why three phase is having 440v instead of 660v?

4 Answers   C&S, NTPC,

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

0 Answers   PNG Power,

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What is minimum phase system?

0 Answers  

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Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

0 Answers  

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

0 Answers   GE,

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what is allowable ac mixing in dc

0 Answers   Reliance,

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what is servo motor and how it works?

0 Answers   Godrej,

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How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

0 Answers  

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cc of scorpio?

0 Answers   MAHINDRA,

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when is safety goggles use mandatory?

3 Answers  

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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.

0 Answers  

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