Answer / hitesh parmar

In the industries, the electrical energy can be saved by
connecting a synchronous motor running on no load with over-
excitation in parralel to the supply lines. Thus improving
the power facfor of the particular system of idustry and
educing the losses.

Answer / mihir

Simple,,, just by reducing the variable losses which is only to depends on current.... By increasing the efficiency and reducing the voltage regulation....

Answer / simon peter

Install a three phase steplizer to improve power factor........

why circuit breaker closing time is always higher then tripping / opening time.

13 Answers   United Phosphorus,

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If the Power Factor of generator is 0.85...What does this mean and Can the motors connected to this generator operate at PF more than 0.85 ?

1 Answers  

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what is ATS & RING MAIN UNIT in Distribution System?And its Function.

2 Answers  

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What are the different protection systems used to protect the transformer internally and externally?

16 Answers  

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what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?

0 Answers   Apotex, Periyar Chemicals,

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what is spadar bar .why I use in DC generator.

0 Answers   BSL,

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What is high frequency grounding????Applications........

1 Answers   Emerson,

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In a circuit a capacitor (paper capacitor ) was burned due to over voltage in this case can we replace that type cappacitor with other tye capacitor ?

1 Answers  

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A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

0 Answers  

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WHAT WILL HAPPEN IF WE START A MOTOR WITH STAR & IT IS RUNNING WITH STAR CONNECTION INSTEAD OF DELTA

3 Answers  

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What is a Single Phase and Three phase Power? How it will be converted or transformed into another form?

3 Answers  

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how to calculate of which rating transformer should be selected? take any example

2 Answers  

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