what is working of communitator in a dc generator?

Answer Posted / koushik

when working as a motor it collects the current from brush and gives to armature slots.when working as a generator it works as a rectifier.it collects the current from armature and gives to brush in one direction.i.e.current flow is in ine direction.

Is This Answer Correct ?    6 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

763


A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

1338


How to calculate the Efficiency of Chiller

2848


explain remenance . differentiate high remenance type ct & low remenance type ct

1616


How wire size can define in electrical wiring? What is the ratio?

1791






What is Servo Ventilated Motor?

1596


What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?

1740


What are the necessary components of the feedback control system?

721


What is load boxes ?

1584


what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

1550


what are the problems that generally occur in power flows??

2536


how to select rating of HT Panel

922


difference between ac series and parallel circuit

1462


how to compute kvar in substation feeder to improve power factor and sending voltage

1635


Why mostly the HV side of transformer has Delta?

2747