Answer / vinod

When three phase voltage is applyed across the stator a
flux with syn speed will be rotated inside the stator, as
the rotar is stationatory max, voltage will be induced and
high startin current is drawn.

Answer / jayaram

iniatially the motor don't have any backemf so motor draw
high current at the starting stage. whenever motor is
started it generates backemf so motor takes normal load
current.

Answer / sanjana singh

in starting motor resistance is negligible.so according to formula-
I=v/Ra ( Ra can be neglected)
then I=V ( Starting current is equal to supply voltage)
so to start motor starter is used. it add resistance in series of motor by this starting current limit to safe value & motor start safely...

what is the difference between gas group b and gas group c electrical equipment construction wise?

0 Answers  

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over frequency is the protection of turbine or alternator?

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Where do we adjust the setting of thermal over load relay & how cal calulate.

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As per principle we say in three phase supply ,the voltage is producing by phase angle between two phase so two phase is needed means then why we using three phase ?

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5 Answers  

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What is rms value wher it is used??????????

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can we use the 110 v primary Tr 240 v secondary step up Transformer as reverse 240 pri 110 sec

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What is the range of the stator resistance of 3 phase induction motor?

1 Answers  

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Which of the following loss varies with the load A hystresis loss B eddy current loss C copper loss D core loss

1 Answers  

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