Answer / shiju

for higher frequency in generator need more poles so the size of the machine will increase.

Answer / peter

higher frequency means higher losses...so heat dissipation
requirements are more....size needs be bigger then...

What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?

1 Answers  

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At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor

5 Answers   ME,

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what are the types in Relay?

1 Answers   PLA,

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usually why bettery voltage are 1.5V, even if you open a 9V battery there are six 1.5V batteries in series. is it not possible to increase this voltage other than putting in series

1 Answers  

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sir iam a 3rd yr eee student.no core company comes for recruitment to our college.my aim is to be placed in l and t.tell me the procedures.

0 Answers  

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How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point

0 Answers   cpgn,

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what is the principle of motor

6 Answers  

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wat is the importance of reactive power in power generation.....if it is zero means wat will happen to system........

22 Answers   Bhel, Jindal,

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trasformer ratting

2 Answers   Bhel,

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how we arrange the hv side with delta connection in case 33/11kv of transformer.

0 Answers   Jindal,

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why circuit breaker closing time is always higher then tripping / opening time.

13 Answers   United Phosphorus,

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what is meant by excitation current & armature current ? where its produce & how we can calculate ?

0 Answers  

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