Answer / j.kesavan

mostly use in mine site HT motors 3750kw,1750kw,crusher
side thay are using slip ring motors,conveyers using
inductionmotors,coveyers thay are using variable speed
drives.

Answer / ck

In mines generally induction motor is used and a motor is used in mine where there is a danger of explosion

How the cable size for a motor is decided

14 Answers   NTPC,

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If there is volagte between earth and neutral, what should be the reason ? and solution * What should be allowable limit in case, if the voltage between earth and neutral exist ? / OR what is limit for safe voltage between earth and neutral?

3 Answers  

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WHAT IS THE COMPLETE DEFINATION OF POWER FACTOR?HOW IT CAN BE IMPROVED?AND WHAT IS CAPACITIVE LOD AND INDUCTIVE LOADS

2 Answers  

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Explain Continuous and Discrete signals?

0 Answers   UOG,

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Does VT metering core can be used for synchronizing.

1 Answers   Shrishti Power Technologies,

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What is the main use of rotary phase converter ?

0 Answers  

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Name of the relay of low lub oil presuure in DG sets

0 Answers   Lineage, Sterling,

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why should be the frequency is 50 hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50

3 Answers  

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Can we convert off line transformer to on line transformer

0 Answers   NHPC,

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FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

0 Answers  

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Induction motor & transformer both has magnetic core,then why induction motor is a inductive load & transformer not???

6 Answers   SBL,

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What is application of isolation transformer & How it works.

2 Answers   BARC,

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