Answer / m.mannathan

output power/input power*100

why on delay timer used for fully automatic star delta starter?

0 Answers  

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What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

0 Answers   Glenmark,

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what is the relevance of knee point voltage in protection and metering grade CT ? and basically what is knee point voltage ?

2 Answers  

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oil cooled transformer

0 Answers   Jindal,

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while checking the flourscent tube elctrodes some glow is cominag. this type of glow tube working or not working

1 Answers  

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generaly all power generating devices is expressed in KVA or MVA then why power ststion is expressed in MW

6 Answers  

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How can calculate the efficency of the rectifier. input 240V AC, current 5 amps,P.F 0.98, Output is 54 V DC,62.6 A.

10 Answers  

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can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.

0 Answers   DEWA,

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why in america the supply frequency is applied as 60 HZ. but in india we use 50 HZ.

1 Answers   Elcom International, HCL, NTPC, OMC,

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What should be value of Circuit breaker operating time and tripping time?

3 Answers  

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in india are trains run by DC or AC? if DC , from where it receives negative potential? because pentograph receives singe potential only?

2 Answers   GATE, PSU,

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I would like to install the largest KW alternator to a 200 amp aluminum bus box in my home. Is it possible to install a 250 KW 400v 251amp synchronous alternator to my home?

2 Answers  

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