we know that dc motors are more superior then three phase
induction motors in torque generation though they are not
much used in industries why?
Answer Posted / qureshi majid ahmed
The dc motors are not much used in the industrry because we
need every time the commutator to convert internally
generated AC voltage into dc voltage.For large scale
industries we can not accomodate commutator in this range.So
even having robust characteristics,they are not preffered
for large machines
| Is This Answer Correct ? | 9 Yes | 2 No |
Post New Answer View All Answers
Why is the frequency not changed during transformation of electrical energy in a transformer?
which stabilizer is better ? AVR, Servo Stabilizer, Static stabilizer etc & why explain it
hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.
i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper
Why in 6 KV XLPE cable termination kit used and why not in 380 V xlpe cable same is not used
Can anybody tell abt concrete encased earthing or grounding?
What is the purpose of stand by earth fault protection for transformer ?
How to detect voltage vector shifting in interconnection protection.
Which are resistive loads & which one are inductive loads : Refrigerator, Split air conditioner, ceiling fans, well pump, fluoresecent bulbs, T.V, CRT Monitors, Adsl Routers, C.P.U, Printers, Deep Freezers, Speakers, DVD Players, Microwave oven etc. ? Output Power for these Appliances Would be same like this : P = V * A * P.F Or would be changed ? thanks
how can you size an automatic voltage regulator?
why 15 kw motor winding resistance is low then 5 kw motor winding resistance?
how to check regenerative load in drived motor
what is doid
Compare salient pole and cylindrical rotor machines.
For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation