Answer / teja

i think it's a step up T/F give answers

Answer / kundan gupta

current transformer is a step up t/f ,it increse voltage and decrese current to mesurable level

In Indian Railways , how the AC motor is driven? Please explain clearly starting from the overhead 25kV supply.

1 Answers  

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need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

0 Answers  

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What is the difference in Line PT & Bus PT.

3 Answers   Bhel,

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In track electrification Either we use single conductor or double conductor? why?

2 Answers  

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Define what is difference between fuse and breaker?

0 Answers  

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RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

0 Answers  

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what do you mean electrical earth pit?

2 Answers   Enercon,

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How can we increase the capacity of Energy.?

0 Answers  

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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3

0 Answers  

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Why DC excitation is used for alternators? Why cant it be AC?

35 Answers   ABB, Ace Info, Alstom, Shalivahana Power,

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What is the difference between KW & KVA ?

9 Answers  

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i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

0 Answers  

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