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How we can calculate what type of supply we need for an example sometimes we take 11 KV and sometime 33KV from EB ?
4 6926What is a formula to decide the size of the cable of the star delta motor ( From Contactor to the motor 2 runs )
4 65521.After synchronising the alternator to the grid,how we r delivering power to the grid?if the i/p increases does the speed hence frequency increases? 2.y the power factor is changing when exitation changes?what is the relation with p.f and flux?
BSNL,
4 10868what is the voltage of insulation megger that should be used for measuring the resitance of 66kv equipments.
DEWA,
3 9491Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks
1941what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?
DEWA,
2011Post New Electrical Engineering Questions
What mean by MLTP
I Just want do EHS Certified Certification Distance Course From Govt approved,so can any body provide me details.
A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?
1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?
If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.
WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME
Describe Non I.S. Earth System and why is it used?
write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;
Why is tan-delta test and capacitor measurement done on alternator?
How to calculate Air conditioning capacity for a telecom BTS shelter?
how does ELR works? explain
The series field winding has low resistance while the shunt field winding has high resistance. Why?
What are hrc fuses and where it is used?
how to make an earthing certificate
What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker
