Answer / rvg

SMPS- switch mode power supply is the best solution for
such frequency variable supplies.

Answer / yuvi

I completely agree with Rvg. SMPS is the best possible
solution when it comes to varying the frequency and
voltage. Good thinking Rvg. Compact, efficient and
effective, the only disadvantage is radio noise created by
it which can be easily shielded.

Answer / vinay

using PIU(POWER INTER FACE UNIT).its working is i/p voltage
is HIGH r LOW.but o/p is CONSTANT.

Answer / k.prakashchandra

Frequency is dependent on the prime mover, the speed
regulation of which, is very bad.

Answer / vikramsenareddy

please arrange AVR( autometic voltage regulator)

Answer / shilpa

the logic behind stabilising the frequency fluctuations is
to slow down the rate of change of current in the circiut.
we should use a proper rating inductor in serieswith the
supply....thats it.

Answer / mubashar ali

Question is not clear , bcz i dont know about source of
power, if generator then u should be istalled AVR, not
possible this fault in grid supply

why transformer rating is always in KVA

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hi pal, i am vengatesh from tamilnadu(chidambaram),i have called for the written test for the post of jr executive(ELECTRICAL) of AAI ,I dont know about the question paper pattern,so any kindly help me to face the examination,post me the model question papers and some tips to write my examination to (vengi.annadurai@gmail.com)

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