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how to get 48 V DC I have ... 1. 12 volt power supply board 2. DC power supply ( max. 30 v) 3. 9 volt batteries ( 2 - not chargeble)
2 4625how long will take to burst/damage for a CT when secondary in open condition? Experienced: During switchgear testing(Primary current injection test) some of the CT are in open condition, but nothing happen's why?
1 3651i am confused about generator. i have generator of 380 KVA that is 304 KW by that formula KW=KVA*0.8... then by this formula I=KW/V*1.732*0.8 the amperes are 528.673. so that is the load which i put on one phase of generator or this is total 3 phase load on Generator.......
3 5494what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .
1785If we know the load for generator in KW then how it will be change to amps and also if we know the load in amps how it will change in KW and what Generator is good for that...suppose load is 500 amps 3phase......??
1 3388what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....
7 9229Post New Electrical Engineering Questions
how to estimate wiring ins roughing ins. and boxes
what is lrs tank water resistance.
is there any device that works properly accept relay, it may be fuse but if i want fuse of 33kv 300 amp it is avaliable, pls give me details
What is EMC filter in VVVF Drive ?
What difference between ref protection and differential protection ?
Why is better to have a minimum ceiling voltage of 250% than 160%?
how generator load test is conducted?what are the steps?
what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?
why impedance relay is used for medium transmission line protection
How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?
Why front mounted CT polarities are always towards breaker?
what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?
Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............
why surge protectetor work explain with the help of circut diagram?
HOW TO CALCULATE ELECTRICAL, MECHANICAL,& OVERALL EFICIENCY OF GAS ENGINE POWER PLANT
