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Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
3588directional relay is typically used to respond in fault condition who it can be used just as reverse power protection which purely senes direction reversal to operate a circuit breaker?
1 4077I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.
4 6758If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.
2332Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?
2161Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?
2 63911. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be
KNJ,
1961Post New Electrical Engineering Questions
How one can check the MAIN of a house wiring ?
does a DG set has low fault level as compared to that of a transformer.If yes then why.
what is high - pot test. what's its use?????
what is mppt (maximum power point tracking ) and how they used in solar power generation ??? what are the main components used in mppt?????
what irequirment need to be followed when working on live equipment
excitation limit of an excitor
How many capacitors using in LT panel as per Govt rules?
I completed iti in2004 I was worked in A grade contractor can I get c licence
what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?
If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?
which fault is severe and why?between lll fault and lllg fault which fault is severe and y?
What is mean by hot and cold loop testing?
working of diesel generator ?
for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
what is meant by k-rating in isolation transformer?what is k9, k14 stands for?
