Why star point of star connected motor is not grounded? Why alternator is operated at lagging power factor?
TCL,
3 15888How 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.
2037how 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,
1890how to select automotive wire by mathematical equation with given current, vlotage and resistance
Tyco,
1894Acually generator neutral is earthed,if suppose cable from neutral is brokened under theearth ,what will happen.
L&T,
2 6135A.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 4922why 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?
1723Post New Electrical Engineering Questions
at work i have a genertor/alternater what is the easyest way to work out if it is dc or ac?
l&t switch FN 63 handle position can we change
After synchronization with grid what is the demand value QKVAR and how we will maintain that?
What is the disadvantage in proportional controller?
Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?
In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.
what is the calculation formula for motor starting torque,running torque, running torque.
What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?
Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????
why -48 volts dc used in telecommucation
why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.
What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?
please forward me the type of questions which would rise while me attending to 33KV Electrical License to my mail ID:vadrevu_raghava@yahoo.co.in
what is the difference between rectifier and converter and commudator?
