A dc motor running on dc drive whose input is 3ph AC what
will happen if we change the phase sequence of dc drive for
e.g (R Y B) is connect as R B Y, will the motor run as same
as previously running before changing phase without any effect
Answer Posted / dinesh lokhande
Basically DC drive consists of Thyristor controlled
rectifier circuit which converts AC to DC and provides
supply to motor armature. As per arrangement of thyristor
circuit DC polarity always remains constant inspite of
change in AC supply phase sequence.
Thus there will not be any change in motor performance.
Note:
My answer may be wrong....
If anybody knows the firm answer can correct me...
Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
plz send me Bhel, Mahagenco, sbi previous exam paper for electrical engineer on my email-id kambali_smita@yahoo.co.in
what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?
explain comutator action in detail.thanks
is there any lightning by passer is arranged in ship like buildings?
I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz
What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.
What are PLC leader logic program method
Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????
I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?
what is method for testing CT
can you plz send l&t aptitude questions if available its urgent plz plz plz
why are installed water leakage detection system data centers & server rooms
how to deside the capacity of chock for drive?
What does bode plots shows?
There are a trformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?