Answer / hihi

open delta system or the v-v connection is used to minimise costs as it is a bank of 2 1-phase transformers can b used for the power supply purpose ..but its poweer output is 57% of the 3 ph transformer .. used wen less load cond so d losses r less ...and wen in fftute load requiremnt increases the 3rd windin is added

Can somebody tell me the type and amp of transformer used to implement 600VA UPS? Thanks in advance.

1 Answers  

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2 Answers   Powergear, Regen Powertech,

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what are the tests comes under the type test, what tests comes under routine tests.

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PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.

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1 Answers  

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0 Answers   KOTC,

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In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

1 Answers   GE,

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2 Answers   Reddy Labs,

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How to calculate capacitor bank value to maintain unity power factor with some suitable example?

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What is a system?

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What is the basic diffrence between Electronics & Electrical engineering

13 Answers  

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