How will you Physically differentiate A.C and D.C motor?
Answer Posted / arun
D.C motor can be differentiated by means of its rotor part.
Because of rotating magnetic field A.C motors will have
mostly squirrel cage rotors.
Where as all D.C motors will have slip ring brush
arrangements in its rotor.
Is This Answer Correct ? | 14 Yes | 12 No |
Post New Answer View All Answers
what are the stresses in circuit breakers ?
why did youi choose this career?
how many load we can take for lighting
why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.
In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?
Why GRR starts from 60% of motor speed why not less than 60%?
what is meant by twilight switches 7 where its applicable ?
explain safety measures in alternator?
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
how a flip flop can be used as a latch?
in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformer
why the carbon brushes are broken in srim while the motor runningtime
Name two low frequency oscillators?
who many types of fire explane with exmple
If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.