Answer / dinesh

As we know that the starting current of motor is high due
to absence of back EMF and low resistance of rotor. In
order to cotrol the starting current we use star coneection
for few time and than your mtotr runs in delta.

As we know that stating torque of induction motor is
directly proportional to square of supply voltage so your
voltage value becomes supply voltage/1.73 and stating
current is limited in star connection and then back EMF
comes into picture

Answer / mohamed ghanem

to limit the starting current

Answer / arul

To reduced that starting current. ( Or) to limit the starting current

Answer / kyle

It's commonly called a, "Soft start." Keeps from jolting the motor/pump/shaft.

If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.

11 Answers   ABB,

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what is the meaning of 1250 KVA Trasformer

2 Answers  

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What is the difference between phase, neutral wire and earth cable. if neutral is connected to ground, y we need earthing cable? what difference in hot and cold wire? do neutral wire carry current?

1 Answers  

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I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

0 Answers  

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What is electrical earthing?

1 Answers  

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function of apfc pannel

3 Answers  

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What is the function of attenuator in cro?

0 Answers  

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Given a ckt,the max power dissipated in the load ZL ?

1 Answers  

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What does the a,b,c of 95a,95b,95c relays denotes?

0 Answers   KSEB,

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What is difference between Dy11 & Dyn11 vector group transformer. Can both these transformers operate in parrallel.

5 Answers   Jaypee, JOY,

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I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

0 Answers  

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why we grounding the neutral of a transformer?

3 Answers   GAS,

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