is dc shunt moter oprate on ac? if no why? if yes how?
Answer Posted / vishwa theja c
yes, in dc motor commutator produces opposite poles and alternating magnetic field using dc. but on using ac this magnetic reversals is very high and frequent causes sparking at brushes. so it is not satisfactory and danger.
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
How to calculate size of HT breaker with the help of Amp (current)? Please provide answers with examples.
How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.
Mention the disadvantages of low power factor? How can it be improved?
As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.
what reactive how to maintain
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.
what maximum range of star & delta in hp or kw ?
How to detect voltage vector shifting in interconnection protection.
What the difference between ac and dc inductor an capacitor
what is POTT and PUTT explain?
What is George phenomena to start the synchronus machine?
A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?
State norton’s theorem?
what is the VA(Volt-amphere)? define with calculation?