sir, my question is that if we start any three phase induction motor with star connection.will be current taken ? please send a formula.
ABB,
4 10728i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.
1 3071Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you
2 4283why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?
3 63421 Ton = ? amperes & power. How much power 1.5 TON split AC consumes in an hour at 17 C , 26 C & 28 C (thermostat' temperature).
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18 451051how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
2061When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?
1 6165Post New Electrical Engineering Questions
What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)
am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?
Differentiate between induced emf and self inductance?
What is Annunciation?
What is lighting kitts.
what is your majour contributions in your present job
what you have to see after one week or month from the day of installation of transformer ?
Why power genaration in India is at 50HZ while America its 60HZ
in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}
What are the site acceptance tests for power cables, DG Sets, LT panels & 30kVA UPS ?
how to carried out DAR test in 11 KV Alternator ?
What is purpose of reactor?.What is different between line and bus reactor?
I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field
why zero sequence impedance measurement is not applicable for single phase GT
1.What will be stored in online ups EPROM IC?