Answer Posted / nithi

Undoubtly,
MOSFET.It has the high switching frequency of
around 100khz.

SCR - 2khz
IGBT - 20khz

what is die electric strnth of transformer ?

2192

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can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...

1993

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following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

2066

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What is non-minimum phase transfer function?

1313

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What is meant by control system?

1198

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hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

2693

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how can i determine the gear ratio for a rack and pinion system if an electronic gate operated by an electric motor is to travel a distance of 5meters in 15 seconds.

2050

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what is difference between line differential and transformer differential?

1746

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am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

1874

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what is vtg limit of earth and neutral at transformer side?

2044

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After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.

2360

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ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant

6329

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how calculate the electrical load for industry and office

9341

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How many types of colling system it trformers?

1182

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What is the use of oil in transformers?

1109

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