Answer / stanley

An IGBT possesses high input impedance and has low on-state
power loss,

IGBT is free from breakdown problem..

Answer / shuaib1805

1) Lower switching losses
2) Lower hate requirements
3) Smaller snubbed circuit requirements

Answer / prasad61

easy to operate & highly reliable also economy

What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?

0 Answers  

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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?

0 Answers  

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what happen if position of GNA and MNA is changed in machine?

3 Answers  

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How can we Run three phase motor when only single or two phase supply is available ??

3 Answers  

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UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

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what is the function of Moulded case circuit breaker, why it is called Moulded?

0 Answers  

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What happens when DC supply is given to transformer

4 Answers   CESC, IBM,

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What are the necessary components of the feedback control system?

0 Answers  

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For load of 1 nos 3 TR Air Conditioners,6nos of 60 Watt Tibe Lights, 2 nos 200 W Outdoor Lights,1 no Coffee maker.All may work at the same timehow do I select DG Set Rating ,pLease advise the calculations

1 Answers  

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How to calculate the value of earth capacitance in a transmission line.

0 Answers  

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Classify drilling machines.

0 Answers   Ashok Leyland,

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What will happen if 40W and 60W Bulb is Connected in Series.

2 Answers  

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