Answer Posted / karthik

IGBT is nothing but a switch,we can use even MOSFET instead
of IGBT.but the thing is that,IGBT has faster switching
speed,otherwise called the operating frequency,hence the
performance and efficiency of the UPS system gets improved

I completed iti in2004 I was worked in A grade contractor can I get c licence

1717

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any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

2148

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if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

1754

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What is kirchoff ’s current law (kcl)?

1100

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Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

2048

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(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?

2186

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i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

2020

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TYPE'S OF BREKAR ,WHAT IS TRANSFORMAR & SAFTY. STARTER DOL & STAR DELTA STARTER.

2594

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all details of DG UPS HVAC

2082

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What current flows in the transformer primary when its secondary is open?

1261

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what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

2377

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What is A check, B check, C Check & D check for a diesel Generat

2127

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If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021

1182

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In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

1724

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how calculate gd2 of ht motors

2320

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