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 .
2985directional 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 3303I 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 5321If 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.
1808Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?
1591Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?
2 53171. 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,
1465Post New Electrical Engineering Questions
What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.
Define phase cross over?
I completed iti in2004 I was worked in A grade contractor can I get c licence
what is positive , negative & zero equivalent system resistance
what is the difference between linear choke and suction choke?
How you give clearance to a spare feeder.
What is relation between mu(nought) and epsilon(nought)?
What was your role in the silicon evaluation/product ramp? What tools did you use?
what is booster? and how it is connected in a circuit?
How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance
What is the effect of positive feedback on the stability of the systems?
how oti and wti connections are different from each other?
What is the tests required for a 132 kV, 400 kV , 765 kV for a Circuit Breaker and Power Transformer before commissioning ?
What are the relays in ACB and VCB
regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?
