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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?

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Is Neutral earthing necessary for single phase system or Genset? if yes or no then why?

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what is differnce between grounding and earthing or both are same?

3 Answers  

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For 415v,3phase,22kw rating of motor how to calculate MCCB rating

2 Answers   Zigma Technologies,

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sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.

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What is the function of the exiter in DG.

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how to make a solar panel? why solar panel cell connected to serious?

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may anybody tell me the names of institute where plc programing course are conducted

1 Answers  

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deisel generators all elcetical calculation formule's

1 Answers  

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When oil level in the oltc of power transformer reduces , oil surge relay will act or not

4 Answers  

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what is the formula for hv test for cable and circuit breaker..????

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We use ACB in LT and VCB in HT.But if we use VCB in LT and ACB in HT that what will be the effect on the system or any power range?

6 Answers   Honda,

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