what is the function of commutator in dc motor?

Answer Posted / kavila

It's a mechanical rectifier that converts the generated
alternating voltage to direct voltage at the terminals.

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why do power lines not short out when they fall into water?

1498


Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?

922


What is the physical significant of power factor?

1490


for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

2151


Explain the working principle of Synchronous Generator and Assynchronous generator?

1739






can anyone give an idea about dia calculation in cold rolling mill

1185


what is the synchronous timer ? and it applications.

1906


what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1604


How can we checked Killo Watts of Motor & Alternator?

1696


what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

1189


What is the difference between Droop vs Isoch Control?

1913


(1)The demand for electricity , the amount of renewable generation available, the amount of fossil fuel generation available and the cost of the fossil fuel generation are shown in table below period(hrs) demand(MW) renewable (MW) fossil- fuel(MW) cost of fossil fuel(MW) 00.00 - 01.00 2000 1800 2000 30 01.00 - 02.00 2300 2500 2000 30 02.00 - 03.00 2500 2700 2100 45 03.00 - 04.00 2900 3100 2100 50 04.00 - 05.00 2700 2600 2500 45 05.00 - 06.00 2400 2000 2700 50 06.00 - 07.00 2200 1800 2000 36 07.00 - 08.00 2100 1600 2000 36 Assuming that the renewable generation incurs zero cost, determine an optimal generation schedule(specifying the amount of renewable generation and fossil fuel generation used in each period, the cost for each period and the overall cost for 8 hours.)

1423


Testing procedure of DG alternator stability test

949


should %impedance be high or low in a power transformer? if so why?

1487


How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?

2255