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Zero Powerfactor method of Voltage Regulation
Why we do not use pure capative load instead of pure inductive load?
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Stator Resistance Range
What is the range of the stator resistance of 3 phase induction motor?
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PF Card Function
A powerplant has 8 gensets operating in grid parallel mode. In one genset sometimes there is pf variation and kvar variation. The plant operates in pf mode. When this variation is observed the load is stable, voltage is also stable, freq and genset speed is also stable. How will you check the functioning of pf card. What shall be the ideal output vdc of the pfc, from there it is input to AVR?
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Cable fault identification.
One 3.5C cable is connected in a feeder with the neutral is isolated in the two ends(3 phases connected and neutral open in both sides). Now on rear end the output voltage is getting reduced by 20V in two phases and 40v increased by another phase.(between phase and neutral but neutral in open in two ends).the cable is meggered and we got the value of 100Mega ohm. There is no load in rear end. Kindly...
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Co axial in guided media
If the cables of co axial breaks down through connections then can it connect again...? give reason..
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Track gauge
What is the purpose of track gauge used in transformers?
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Direction of current flow in three pole regulator
The circuit diagram is at http://avstop.com/AC/apgeneral/regulation.html
I cant completely figure out the way current is flowing through the three pole regulator that I have attached. I believe that current is coming up through the L1 coil into the positive terminal of the armature. and, I think current is flowing down through L2 coil and around back up to the positive terminal of the... -
Model of a transmission line
What is the standard size of a model of an electric tower for lab exhibition?
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Magnetic susceptibility VS paramagnetism
More or less what are the similarities and differences in paramagnetism and "Magnetic susceptibility".
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72V DC Motor with two 12V wind Generators
Hello, I have two 12v DC wind generators that can provide charge to a 72v battery bank. This bank is used to power a 72Volt Electric Motor. I have one connected to the first battery (the positive connect for the entire bank) and the other generator is hooked up to the other or last battery of the 72v bank (the negative connect). Is this proper? Or, what do you recommend? Which manner should I best...
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Virtual ground
while supply voltage 12V, when I adjust 17V to circuit,my virtaul ground potential become about 0.9V.Why this happening ? Is virtual circuit always zero potential ? Thanks for your helps.
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What are The Types of UPS ?
OFF-LINE UPS
Lower cost than other units
Under mains power unit charges batteries and power passes directly to the load
During mains failure batteries provide power to DC/AC inverter to provide 230VAC power to the load
Square-wave or Sine-wave output
ON-LINE UPS
Constant duty inverter
Design inherently improves power quality and... -
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Voltage and current conroller
Why voltage is to be controlled?
why current is to be controlled ?
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Frequency Dependent Losses
How we can say that losses are frequency dependent? If there is no frequency than there is no losses? any have physical significant of this statement? Please provide me a better solution for my doubt
Electrical Engineering Interview Questions
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