Answer / guest

for pulse width modulation

Answer / raxit

because IGBT is a voltage control device which is easy to control, it doesn't required commutation circuit. and it's SOA
is large.

Answer / sunil kumar

high efficiency and fast switchinghave & very high current
handling capabilities in the order of hundreds of amperes
with blocking voltages of 6000 V.

Answer / nandhakumar

it is also used for the interfacing purpose

can u name the different types of motors used in different types of applications?

6 Answers   ABB, Bhel, SBQ,

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why effective resistance should be more than static resistance in transmission line?

0 Answers  

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Whar is the KvA rating of 33Kv substation & actual kv rating of power generaating station.

0 Answers  

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We've 2 diffrent DG's with same capacity (500 KVA). Can we sync them ?

1 Answers  

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What are the raitings of Mcb,mccb and Acb in detail ??

0 Answers   Engineering Vision,

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what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

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The efficiency figures for energy efficient motors (in comparison with standard efficiency motor) can be generally higher by____%.

1 Answers  

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it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high

2 Answers   DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,

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What happen if 200 KVAR capacitor connected to power continuesly?

0 Answers  

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If i switch on a transformer but with no load connected to the secondary path.Is the transformer will burn?

5 Answers  

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The power supplied to a 50mH inductor from a 120V, 60Hz source will be

0 Answers  

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ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit

4 Answers  

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