Answer / bibhas roy

The reasons are
i) To reduce ripples
ii) To have flexibility in design of exciter brreaker by
reducing inductance
iii)smaller size in high frequency
iv)high freq. to obtain the required KVA

Answer / a.p.nanjappa

400HZ IS BETTER FOR ACCURACY THAN 110HZ FOR CONTROL SYSTEM

Answer / a.p.nanjappa

400HZ IS BETTER FOR ACCURACY THAN 110HZ FOR CONTROL SYSTEM

IN star -delta motors normally first operated in star mode {absulated given (r-y-b) phases after one miute change in delta mode in this case i am change phase sequience for example R -PHASE TO CHANGE Y-PHASE ;Y-PHASE TO CHANGE R-PHASE SO THIS TIME MOTOR WILL HAPPEN RUNNIG MODE EIGHTER(OR) STOP MODE(TRIP MODE)

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