if dc motor can operate by ac supply ? if its possible
means how ?
- 2 Answers
- 6392 Views
- I also Faced
- E-Mail Answers
Answer Posted / rahul ganthade
It depends on whether the field winding of the dc motor is
connected in series or in shunt with the armature
winding.If it is connected in series,the motor will rotate
since the torque,which varies as the product of the
armature and field current is always positive.Thus,a
positive average torque causes the motor to rotate,however
the pulsating nature may cause the commutator segments and
brushes to wear out.
Thus only small sized dc motors may be used with ac supply.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions
design of IGBT firing circuit for 11KV
When distance between two pulleys is not fixed, the tension of belt is adjusted by a) driver shaft b) driven shaft c) adjustment screw d) belt
What is the instrument to check the rotating diode fuse of alternator in running conditions?
what is magnetizing and demagnetizing current in generator and motor?
what the Microsoft .NET framework is?
what is the difference between rectifier and converter and commudator?
where the lexical paramater will use in fron end?
how does a liquid starter reduce the starting currents?
what are the breakdown voltage rating of mini- curcuit'transfarmer!
How many points does a Circuit can have?
whati s the sludge current in ups
Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.
what is working process of star delta controlling circuit ?
how to calulate short circuit current for the following: 1.cable connecting 11KV of 22KV/11KV transformer to 11Kv of 11KV/415V transformer 2.what cable size should i use.
