Answer / sandeep das

An Inverter is used to control the speed of the compressor motor, so as to continuously regulate the temperature. It improves the COP & EER of an AC.

Answer / keval mistry

function of inverter is to convert dc power into ac power.
and to do that various type os switching device like scr or igbts or MOSfets are used. and their switching can be controlled with the gate pulse so we can get desired sine wave as an output.

can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?

0 Answers   RD Square,

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in india why we not use frequency above 50 hz for distrubuting power ?

1 Answers  

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WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?

1 Answers  

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in a diesel generator is there any relation between AVR to fule system?

2 Answers  

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Define resonant peak?

0 Answers  

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How can we calculate the resistance of earthing & how can we control it?

2 Answers  

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why DC is not generated instead of AC?

4 Answers  

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How to decide the input and output circuit breaker for a 1600kva transformer.Is there any calculation is involved.

5 Answers  

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How do you select a cable size(cu and Al) for a particular load

6 Answers   Pepsi,

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Sir We have a REF relay connected to 10MVA(Y-Y) Transformer.on External earth fault REF relay trips along with earth fault relay.The REF relay has no complant as we tested relay.Why is it happening?

3 Answers   KSEB,

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what would happen when synchronous motor will operate beyond syncronous speed?

3 Answers  

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is it value of power factor is more than unit. whats effects in the source supply

0 Answers  

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