why can't we increase the voltage by increasing the field
voltage in order to get higher voltage.so that we can
eliminate step up transformer
Answers were Sorted based on User's Feedback
i think that, if we increase the field voltage from certain
limit then there will be a chance of sarturation in the
machines.
Is This Answer Correct ? | 11 Yes | 1 No |
Answer / subrata
I think there are two reasons..
1. Above a certain limit there is a chance of saturation.
2. We will not be able to provide suitable insulation in a rotating machine above a certain voltage.
Is This Answer Correct ? | 7 Yes | 1 No |
Answer / waqar ahmad
Every machine is designed for specific insulation level
against voltage level. So increasing voltage, insulation
can get puncture & as a result machine will get failure. so
voltage can't be increased from predefined / designed lavel.
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / surendra
In which mode machine is running ,that basiclly tends to
decide the field excitation....apart from this if you
increse the fild excitation to high value saturation
occurs... losses will be more.....
Is This Answer Correct ? | 0 Yes | 0 No |
why h parameter are called as hybrid parameter?
what is the means of dedicate earthing?
Is there any abbrevation for STUB in Stub bus protection
In Induction machines which type of emf is induced ( statically or dynamically)?
why capacotors burnt out
can mini-curcuit supply MIL-tested transformer !
When alarm is activated in buccholz relay in transformer
E.B sending end to receiving end 33kv ug cable laid 8Km,receiving end to ss1,ss2,ss3,ss4 all are Approx 800 Mtr,can go for 33KV to 430V or 33kv to 11kv in receiving end and 11kv to 430 near ss ,which one is good for technically and economically.
what happen when increase or decrease size of lamp,light.glass.
why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?
if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer
is there any chart showing the suitable cable size according to AMP and length ? for three phase motors