What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

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HOW TO CALICULATE THE LEAD ACID BATTERY AH AND HOW TO FIND THE 1.2KVA UPS BACKUP @ 1000WATTS LOAD?

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why we cant use AC supply products in DC supply?

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One Township having 850 house and each house load is 2.2KW single phase & 5HP 3 Phase motors of 10 Nos .Who can calculate 11 KV transformer capacity .dilip_bhasker@yahoo.co.in

1 Answers  

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if its possible for step up or step down DC volage directly ? possible means how we can do it ?

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Hi,Any one has idea regarding the KPTCL Recuirtments for AE'e & JE's for the year of 2009-10???Kindly help in regards..

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What are the types of class b amplifier?

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kindly send me 11KV MV motor differential protection procedure by primary injection method.

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why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??

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how much up to LT Voltage range?

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WHY THE FREQUENCY IS 50 HZ IN INDIA.CAN WE USE SOME OTHER FREQUENCY.IF SO WHAT IS THE RANGE AND WHAT WILL BE THE EFFECT IN PRESENT POWER SYSTEM IF WE CHANGE THE FREQUENCY AS YOU SUGGEST ?

32 Answers   L&T, MCL,

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What is the difference between Generator Differential Relay and Transformer Differential Relay?

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