without any excitation we can strt any dc or ac moter?

Answer Posted / manikanta..{munna} geethanjali

the word excitation means to build a conducter into an
elecromagnet. there fore the other subtitute is 2 use a
permanent magnets.

Is This Answer Correct ?    4 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why HT 11 KV Slipring Motors are connected in star ?

1775


Which material is used for the core of a transformer and why?

609


In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

3398


what are the application of over current relay?

4248


Can anyone tell the proper diagram of star delta starter????

1474






how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

2351


What is CVT and what is relation with wave trap?

1660


What is meant by full pitched winding?

643


300m long and 30kw inductive loade 3phase supply how many size cable required

1002


Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.

1624


What is the cut-off rate?

719


how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

1514


what happen when power factor of 2 parallely operated transformer become equle?

1715


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?

1749


What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

1385