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please let me know , we have installed two separate motor for fire fighting system 1) 60 hp and 2) 15 hp the load is 74 AMPS and 20 AMPS then tell me the main power cable in Aluminum will be what thickness , the length is 225 mt from the main utility to fire pump house
1 2642How power is transferred from one winding to another in an auto-transformer? A) electrically B) magnetically C( both a & b D) neither of above
ISRO,
3 4188I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??
1846What the reson for frequant instantaneous ground over current fault in our sync. Generator... 15 triping in 24 hr...
1 3126Leading power factor means what? what is the power factor value while in power factor is leading? is power factor greater than one? In some cases i heard pf 0.8 leading then what about 0.8 lagging?
1 2617Can anyone explain, How will get positive to ground and negative to ground reference voltage in dc system
NCC,
1 2307Post New Electrical Engineering Questions
do you have some of interview Questions in power and genrator section in general whith answers
how can motor both beasrings insulation resistance can be check?
Can you explain about TEE protection scheme?
can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?
what is saturation kit?which use above 15 kw motors panel side.
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..............
What is miller crystal oscillator? Explain its operation?
what is the significance of tan&delta and how it performed in power transformer
Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com
what is the use of expulsition protective gap in 11Kv line.
During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP
Can we use shunt trip coil instead of trip coil with protection relay for protection?
Why armature rheostat is kept in maximum position?
Is there a possibility to use such a treshold voltage for the NMOS part of a CMOS circuit that during the switching it will start conducting only after the PMOS part will be already closed, by this eliminating the leakedge current? Please note, I'm not asking about the well bias in standby mode, but about the "antileakedge" measures during normal operation.
what is the purpose of using filters in a protective relaying scheme?
