what is a universal motor? how it works?

Answer Posted / boopathi

Its a motor is work in both DC and ACsupply.

Is This Answer Correct ?    4 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the drawback of class b amplifier?

651


A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?

1881


Is there any standard guidelines/Criteria to design NGR/NGT.?

2365


why ht motors are star connected?

1424


why the field winding in dc motor is not short circuited eventhough dc supply is applied across the winding

1410






what are the tests comes under the type test, what tests comes under routine tests.

1035


Pl. share your experience about industrial-electronics repair of machine tool.

1451


How much should be the load percentage for 15kva Inverter and Iinut & I output load with Calculations

1578


why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

1395


Is a d.c.compound motor is use as a booster? how?

1654


why and how voltage sharing in transformer, during magnetic balance test ?

1805


Explain the different methods used in the choice of rotor slots for reduction of harmonic torques in an induction motor.

1553


i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.

1455


Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

2400


Differnce between negative Pahse SequenceFunction and unbalance Function?

1300