how much amp MCB is required for 1/2 kva power back up?

2 Answers   Havells,

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In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

0 Answers   RRB,

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what is mean by tan-delta tap in the potential transformer??

2 Answers  

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KVA transformer of different frequencies of 50hz,100hz,500hz&1000hz. which one of these transformer has big size? Give reason

4 Answers   Suzlon,

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What is the Ramping rate of Generator. What mena Ramping rate

2 Answers   Siemens,

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dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish

0 Answers   RRB,

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What is control system?

0 Answers  

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WHY WE DO NOT TAKE THE POWER FACTOR MORE NEARER TO UNITY IN AC GENERATOR?

1 Answers  

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why is the transmission voltage is multiple of 11?

1 Answers   HAL,

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what is the formula for 3 phase motor starting cureent deatials 3phase 148A delta 415v, efficiancy 94% can we run the motor with 200A incoming supply

2 Answers  

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What are the different methods for calculating Short Circuit Curren?

3 Answers  

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ELCP USE IN 3 PHASE SUBMERSIBLE PUMP? THEN USE 3 POLE 0R 4 POLE?

4 Answers  

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