why is efficiency of transformer more than that of other rotating machines?

1 Answers  

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dear all, How do i increase UPS (1000VA)backup time ? i have connected 2 12v wold you please 120 aH battery externally. ups charge the lead acid battery only 12.7 volt. backup time only 10.00 minuts and gose off. can any one of you help me?

1 Answers   Technomax, ups,

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why a tester wont shock while testing the power in house

0 Answers   Tessolve,

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how to test vector goup of Dy11 transformer

1 Answers   APPSC,

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Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

0 Answers  

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how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...

0 Answers  

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In case you don't have coal and salt for earthing, how can you achieve good temporary earthing?

1 Answers   Focus Energy, NHPC, ONGC,

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List the time domain specifications.

0 Answers  

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what is the difference in using the 125% and the 250% factor of safety in calculating circuit breakers capacity for motors,which is more reliable to use the 125% or 250%??

1 Answers  

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define transient state &steady state

1 Answers  

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While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

0 Answers  

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WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

0 Answers   ACC,

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