Answer / san

self excieted in this type of generator field coil
excitisation voltage is tapped from armature.
seperately excited gen field coil is connected to
battery or exciter .

Answer / lokesh

Self exited does not require external power souce where as
seperately excited requires external power source for the
excitation.

Answer / g.kiran kumar

for seperatly execited machines an external d.c source is
required to exicte the field coils to emmit the flux.where
in case of self exicted an induced emf induced by the
armature is supply to the field coils.(THERE MUST EXIST
RESIDUEL FLUX IS PRESENT IN FIELD WINDINGS FOR SELF EXICTED
MACHINES)

1hp single phase load = howmuch 3 phase load

0 Answers  

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rating of ups??

1 Answers  

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WHAT IS MINIMUM AMOUNT OF CURRENT THE HUMAN BEING CANT RECOVER FROM THE SHOCK,WHAT IS THE RESISTANCE OF THE HUMAN BODY

3 Answers  

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WHY WE USE SIEMENS plC

3 Answers  

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physical identification of HT & LT panel

0 Answers   Schneider,

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Can we perform parallel operation of two transformers when one transformer on load?

3 Answers  

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what is plunger and what's the use of it in motor alignment?

0 Answers   CLZ, Yahoo,

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We store the d.c supply...then why can't we store A.c supply???

4 Answers  

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please send me privious exam's queation papers of section engineer(electrical).

0 Answers   RRB,

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How can we calculate the fault level of the distribution system knowing the percentage impedance of transformer & subsequent equipments.

14 Answers  

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Which test will be more severe for VCB?

0 Answers   CPRI, Reliance,

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what material is the electrical housing wire made of? is there any difference for the telephone lines?

0 Answers  

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