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when we gave dc supply to 220v dc motor its rpm is 1200. then we gave 180v. how many rpm of its motor. gave answer with calculation at my ID.... ravizak@ymail.com
2413Why is it preferred to use a wattmeter(s) to measure power in three phase systems rather than using a combination of other instruments e.g. voltmeters, ammeters etc?
2 6459in power station what is the electrical circuit length of spacing between power transformer and lightning arrestors,for the voltage system of 230kv,110kv,33kv,22kv,11kv?
1 4047can you use 400 volt 3 phase and neutral and earth equipment on 440 3 phase and earth supply safely and if so how?
2 8244iam working as a electrical engineer. i want to know about any license or certificates regarding my field. for my carrier and ti improve the knoweledge.,,, how we get that..and what procedures......... pls help me
1 4264how to testing the AC 3 phase motor? and what is the test procedure & kits required for testing?
3 8373what is the working principle of contactor and conditions of normal open and normal close on it?
EEE,
3 30032if any house we instaled a 1.5 ton ac and its phase cable of wiring is installed but netrual cable of wiring not instaed. my question is that is neutual of house(for other wiring is capable for ac load or a sepeart neutrual wiring required
25471 no. 22 kV feeder is taken from state electricity board. 350 MVA is the S.C. MVA. now i am feeding this feeder to HT Panel having 2 outgoings which further supply to 2 Transformers. Can you please suggest me the type & rating of cables are 3 of these cables same? or they are different? please help...............
TCE,
2 6748Post New Electrical Engineering Questions
what is meant by k-rating in isolation transformer?what is k9, k14 stands for?
What aturn on methods of scr?
a battery is having capacity 100AH and 25% charging .if a load taking 10A & connected 6 hour .what is the final condition of the battery.
what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer
A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram
what is feeder bay?
neutral earth resistance testing is it possible for transformer while in load condition
why starting current is high and resistance is almost 0 during the starting of motor dc motor...?
How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.
who many types of fire explane with exmple
what do you mean by class PS CT and what are technical details needed for calculating it?
Efficient electrical earthing in hard rock area
is all the servo motors having brake?please specify which servo motors having brake for stop on position and which are not.
Why we find the sensitivity for the CT's to check?
what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?
