why dc motor is called constant flux motor?1 2184
why do we use LPF wattmeter not UPF in the experiment of no load and blocked rotor test of 3phase slipring induction motor?3 11295
what are the safety in transformer,diesel generator,ups, chiller plant,h.t. , L.t. , sewage treatment plant(stp),water treatment plant(wtp), fire. plz ans. me in detail if you know any of the mention above. i urgently need2 2659
when the flux enters into saturation mode then what will be the secondary voltage of the normal t/f?....high or low ? explain ...how?1 1360
howmany electrician should maintain for a 1000 kva used plant... in kerala..1116
we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?842
Sir, Please tell me that how I will calculate the efficiency of rectifier. Because input is ac and output is dc. Is it right to put two unlike signal together.2 1356
Why we are always only used 11 kv. , 22 kv ,33kv in transmission line? Why not use 25, 55 ,65 kv ?3 3082
What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?937
In Generator How suction compression power and exhaust works ?
what is B , c & d curves in MCB characteristics i e Full Form of B , C & D . sir please give me answer
What is means by MacAdam Ellipse?1 1767
Why we not use the impedance relay in protection of short transmission line ?4 4988
what happen if generator of micro hydro running at only a small percentage of its capacity, as a comparison, if the diesel generator that runs on only a fraction of its capacity there will be a wet stacking
Define characteristics impedance?
An automatic water heater is an example of which type of control system?
How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point
What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load
When and where resistance earthing is used ? How to calculate the time constant for earth fault
HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.
We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.
why we r not earthed Control cable of C.T. terminals
Motor,transformers,capacitor tubelight etc....
List the advantages of star-delta starter with induction motor?
What is the drawback of class b amplifier? How is this minimized?
how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.
The moisture in air will condense at
why did youi choose this career?