Answer / ananya

Active power is the energy supplied to run a motor, heat a home, or illuminate an electric light bulb. Reactive power provides the important function of regulating voltage.If voltage on the system is not high enough, active power cannot be supplied.Reactive power is used to provide the voltage levels necessary for active power to do useful work.Reactive power is essential to move active power through the transmission and distribution system to the customer .Reactive power is required to maintain the voltage to deliver active power (watts) through transmission lines.Motor loads and other loads require reactive power to convert the flow of electrons into useful work.When there is not enough reactive power, the voltage sags down and it is not possible to push the power demanded by loads through the lines.”

Answer / uditparashar

Zero reactive power means the transmission line is purely resisitive which is practically not possible, even though if it happens there will be no losses in transmission

Answer / kartik

But, Ananya why we are always try to reduce reactive power?

why do we use bundle conductors instead of using single conductor of larger size for high voltage transmission?

7 Answers  

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how a vibration switch's high signal will going to trip the motor? can u explain with some examplesand wiring diagrams?

1 Answers   Bhel, Wartsila,

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If a manufacturer decribes a power supply transformer as providing a secondary voltage of 24 volts when connected to a 240 volts supply, do you think they are refering to the full load or no load secondary voltage?

3 Answers  

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Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

0 Answers  

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What is the result of under frequency to the system.

4 Answers  

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Basic motor transformer generator

0 Answers   eCentric Solutions,

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enlist types of dc generator

8 Answers   Philips,

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how and where does star and delta connection is used ?

2 Answers  

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Why the cores of large transformers build up of circular cross section?

0 Answers  

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1.Difference between vcb and Acb and partes. 2.Difference between STS and ATS.

2 Answers  

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what is meant by real power,active power,reactive power & apprent power ?please explain it?

3 Answers  

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Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??

2 Answers  

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