generally the resistance of armature is very small i.e in
term of .05ohm or like this.this is due to reduce the
losses.if the motor is connected direct supply high current
will flow and it may burn the armature winding.thats why
starter is connected between supply and motor which reduces
the starting current and provided smooth operation
Please Help Members By Posting Answers For Below Questions
In what cases (circumstances)we should apply P controller,
PD controller, PI controller & PID controller ?
some time we open engine breaker 8.0 MW load but plant not
trip. and another time engine open 4.0 MW load engine trip
why? individually engine breaker open & individually
emergency stop why difference?
why we testing the core balance of the transformer before
why noise occurn when transformer is working ?
what is mean by PIR in circuitbreaker and give me detail of
I am designing new project sub station with 220 kV / 11 kV,
40 MVA capacity. This project have many recifier sets,
which can generate 3rd harmonics. Now I have to select
vector group of This transformer. To minimise 3rd
harmonics, what care should I take in selection of
Transformer Vecrtor group? If it is Y-Y with open Delta
tertiary then what should be the rating & voltage of
WHAT IS THE WORKING PRINCIPLE OF A GENERATER.how
is a GTG (Gas TURBANE Generater) working.plz explane
what is the difference between capacitive and resistive
how calculate gd2 of ht motors
is oil viscosity affect on motor current?
describe the Tranformer testing procedure
we all know voltage is a force(emf), and the force always
devides if 2 or more than2 loads are there but why does the
voltage remains same is parallel, it must devide na ???
Why PT voltages are measured with respect to ground? What
do u mean by voltage or current polarized.
In Power Line Communication (PLC) the wave trap is used to
block communication signals from entering neighboring
lines. My question is this: Why do they allow for
different filtering arrangements on these wave traps?
Isn't it always going to be a low pass filter since we want
the power frequency to go through, and the comm signal
can we start slipring motor on star delta like we start
induction motor ? if yes where will we connect ?