Answer / umesh ranjan panigrahi

If it is a 3-phase squrel cage induction motor then by
adding external resistance in rotor circuit we can control
speed as well as torque.

Is it posssible to obtain the higher speed(3000rpm) for adiferentiallly cascaded induction motors(with 8 and 6 poles)

3 Answers  

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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)

6 Answers   MacLellan,

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HI,how to know that the MEGGER which i am using is working properly,reply....thankyou

2 Answers   NTPC,

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Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connected and started at a single moment? Also explain about any calculations and formulas used in deriving the same.

4 Answers  

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what is the difference betweem star connected motor & delta connected motor?

0 Answers  

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Can i connect all earth pits in ring system..., And wat IS 3043 says...please help me

1 Answers  

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why 400Hz is used for aircraft systems ?

14 Answers   Cabin Crew, Jet Airways,

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Why High voltage are generate noise ?

0 Answers  

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name 3 measuring instrument used in transformers

4 Answers  

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what is relay what is protection & contact multiplying relays where it is used function in brief

0 Answers  

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1. Why transfomer reting in KVA and Motor in HP

11 Answers   AirIndia, Jindal, Mind Tree,

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what r Grid stations?what r there role.Explain in detail

1 Answers  

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