Supose we have one 220v A.C fan.if we provide 220v D.C what
will be happen?
Answer Posted / infodoss
1phase or 3phase any motor operate only in ac.Because AC
supply only can produce RMF.But dc supply can not produce.
when ever to give the DC supply in AC motor the motor will
be heated and finnaly burn due to insulation failure.
Is This Answer Correct ? | 23 Yes | 4 No |
Post New Answer View All Answers
Why GRR starts from 60% of motor speed why not less than 60%?
How to measure power in 2 or 4 or n phase circuit? Please give me a formula.
To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating
can we install HT panel & LT panel side by side or how much clearance is required ?
-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.
what is mean by restructuring power system?
what is basic difference betmeen normal & flame proof motor??
How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?
What are the factor to be consider for CT selection in 132kV substation?
what are the different methods for the starting of a synchronous motor.
Can RCD's used to protect the VVVF drive if not why.
What are locations arc protection relay is fixed.
why u r living from presentaly working.
define superposition theorem thevnin theorem ,norton theorom?