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Why star point of star connected motor is not grounded? Why alternator is operated at lagging power factor?
TCL,
3 17240How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.
2408how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size
Tyco,
2374how to select automotive wire by mathematical equation with given current, vlotage and resistance
Tyco,
2356Acually generator neutral is earthed,if suppose cable from neutral is brokened under theearth ,what will happen.
L&T,
2 7092A.V.R maintains the voltage of a generator when it is in island mode but when the generator is synchronised with grid it maintenance the P.F,how it happens please any body explain it in detail.
TATA,
2 6159why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?
2206Post New Electrical Engineering Questions
On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?
What is the bundle conductor?
Name two types of electrical analogous for mechanical system.
What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks
What are the necessary components of the feedback control system?
types of central Air conditioner plant?
What is the lockout relay
i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance
Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?
given data are load current & power factor cable core size? plz any one update the calculation formula
Difference between drift current and diffusion current?
What is the differance between 2 dc motors of armature voltage 660 v and 440 v?
what is the main parts of transformer? how it is functioning? pls giv the ans briefly.
What is the effect on 3phase induction motor if current setting knob of DOL kept at minimum current?
how to calculate the mesh earth network resistance in such substation, is there any recommended resistance values with references , thanks!
