Answer / prasanna kumar

motor running with star-delta starter or DOL will show full
load of the motor unless the motor drawing high currents due
to faults.while coming to the vfd motor may run at high
speed or low speed acc to the requirement.when it was
running with high speed it will draw more current.

why the insulators are in cofee colour???

4 Answers   Visa Steel,

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Why the generating station rating is in KW though the rating of generators in KVA?

8 Answers   HAL,

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if z transform lies in ROC then. a)system is stable b)inverse of system is stable c)both system and its inverse are stable.

1 Answers   CCP,

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What is Phase margin?

0 Answers  

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what is use of reactive power in ac ckt.

2 Answers  

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WHAT IS LINE TRAP,HOW IS IT FUNCTION?

1 Answers   L&T,

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if we are using ACB in a panel the how much clearance do we need in panel room.

2 Answers  

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What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

0 Answers  

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how much current carry a 3-1/2 core of 100mm size cable.explain it with solution

2 Answers   ACS,

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a transformer runs by electro-induction principle like all motors.then why dosen't it rotate just like any other motor

2 Answers  

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Sir, I m 3rd year student 4m DCE and want to do internship in siemens or l&t or any other mnc related to electrical engineering. please tell me the procedure 4 same and oblige me

0 Answers  

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A group of machines (wind turbines) connected with 33KV feeder and each machines are having individual VCB. The 33KV feeder connected with 110KV/33KV substation. The 33KV feeder tripped by over current at Substation and fault recorded at Substation as OC-R&Y phase. Same time the group of machines VCB tripped by over voltage, the fault recorded voltage was above 66KV by numerical Under/Over voltage relay. While grid drop time, this much of voltage hike is possible?

1 Answers  

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