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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 4185I 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? ??
1844What the reson for frequant instantaneous ground over current fault in our sync. Generator... 15 triping in 24 hr...
1 3124Leading 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 2616Can anyone explain, How will get positive to ground and negative to ground reference voltage in dc system
NCC,
1 2305Post New Electrical Engineering Questions
Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
What is the difference between earth fault protection of motor feeder with CBCT and Without CBCT ?
In dc ckt. 24v or 110v, which one is more efficient and why?
what is negative and zero impedance in 3 phase induction motor ??
what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)
sir please send me previous year questions of jspl of electrical section through which i could prepare myself fpr the test.
what is the working principle of a DG Set, Alternator, & exiter
Alternator rotor earth fault relay circuit
After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.
How to calculate multiplying factor of dc energy meter
which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing
What is voltage divider rule?
Why can't we parallel the secondary circuits of two voltage transformers?
what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks
