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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what is the difference between self excited & seperately excited ?

3 Answers  

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what is the effect of power factor of machines in starting current

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In a 3Ph induction motor(old) 6 wires came out from terminal & not mentioned u1,v1,w1,u2,v2 & w2. how can find out the terminals? how can connect to star delta starter??

1 Answers  

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What is the effect of solar radiation on the design of an Isolated Phase Busduct?

0 Answers   Exide, Punj Lloyd Ltd,

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what is form factor.and rms value..

1 Answers   IIM, Torrent Power,

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why we use the 100% and 95% stator earth fault protection for the synchronus generator ?

0 Answers   Operational Energy Group,

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Form fator is the ratio of?

5 Answers  

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calculation of lad carryinc capacity of 6mm2 cross section wire in 415 voltage circuit. What will be the amps.

0 Answers   MAHINDRA,

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WRITEDOWN FEW RELY CODES

0 Answers   Equate,

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DEAR SIR, HOW TO CALCULATE WELDING TRANSFORMER CAPACITY IN KW OR KVA (POWER). TWO WELDING TRANSFORMER USED WHAT TYPE OF DG SET CAPACITY LIKE ( 45 KVA OR 62.5 KVA), PLEASE TELL THE WELDING TRANSFORMER RATEINGS. I AM REFINARY (TANKS WELDING) THANKING YOU

2 Answers  

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What is trip and closing coil in cb? Why need of them

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