Answer / k mutyala naidu

by using three point starter we cant control(different speeds) the speed,but by using 4 point stater we can control the speed of the motor.

Answer / sheikh

3 point starter used to make and break the only for phasees
like Red , Yellow & Blue phase. and 4 point starter used to
make & break the 3 phase and Neutral also . 4th point may use
for make & Break the neutral of given circuit

Answer / shiva

high current in four point starter

if our load in 3 phase circuit is 4000 amp. calculate the capacity of capacitor panel if line power factor is.80 .

1 Answers   ST Micro,

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WHAT IS EXTENDED DELTA AUTOTRANSFORMER? WHERE WE USE THAT?

2 Answers   Amtek, TATA,

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In power transformer YnD0 Vector Group is possible or not? if possible, what will be the vector diagram and what are the conditions?

2 Answers  

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Difference between transmission line and cable?when ever a large water channel has to crossed it is easier to use cable then transmission line why?

1 Answers  

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is harmonic useful or it distort the alternating quantity?

2 Answers  

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What is the output voltage of a DG set.

3 Answers   Fitness First,

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why nearly all the voltage levels are in the multiples of 11 like 3.3 ,6.6 ,33 ,11 kv.....

8 Answers   Suzlon,

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What is meant by turbo alternators?

0 Answers  

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does a DG set has low fault level as compared to that of a transformer.If yes then why.

0 Answers  

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i am confused about generator. i have generator of 380 KVA that is 304 KW by that formula KW=KVA*0.8... then by this formula I=KW/V*1.732*0.8 the amperes are 528.673. so that is the load which i put on one phase of generator or this is total 3 phase load on Generator.......

3 Answers   Haliburton,

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The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

0 Answers   Ispat,

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how on load transformer is chnage the Tapping ?

2 Answers  

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