what is the difference between ac and dc generator
Answer Posted / rahul
alternators are called ac generators,they are synchronous generators that runs at synchronous speed, ac&dc generators works on same principle of electromagnetic induction.in case of dc generator armature rotates and field remains stationary, where as in alternator field rotates and armature winding(stator winding) remains stationary. in case of alternator the generated voltage are taken out from the stator winding where as in dc generator the induced ac voltage is first converted to dc by using a commutator and the output is taken from the rotating commutator by using brushes. in case of alternator better insulation can provided if generated voltage are taken from stationary winding and the dc supply to field winding is provided by using brushes.
| Is This Answer Correct ? | 10 Yes | 1 No |
Post New Answer View All Answers
what is negative and zero impedance in 3 phase induction motor ??
what is the difference between the characteristics of two different phase bushing of any transformer
how to calculate the conductor size for certain KV transmission line and distribution line?
What will be in Mahagenco Trade Test Exam? I want to know the same.
Difference between ac parallel circuit and ac series circuit?
What is the relation between frequency and motor rpm?
plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?
The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?
What is the automatic voltage regulator with servomotor?
What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?
What is Tachometer used to measure?
what is difference between 5A and 100A CT constructional wise and operation?
What is meant by positive and negative feedback?
if we install two earth pits with a clear space of 5m without any interconnection,by checking the digital multimeter will it show continuity between earth pits? If so what would be the approx. value
volts=230 c=10mf a=??