Interested to Buy Any Domain ? << Click Here >> for more details...
rotation of dc shunt motor is revers by using 2
methods,which method is best and why??
(please answer if you know correct answer)
- 3 Answers
- 44550 Views
- Professional Instruments, I also Faced
- E-Mail Answers
Answer Posted / nithi
reversing the armature terminal is better & applied in
practice.this is becoz of the following drawbacks in field
reversing method.
* high voltage build-up during reversing the field terminal
which is high enough to puncture the insulation of field
coil.
* high flash-over will occur.
* during reversal, the armature current should be limited
to the rated value,otherwise it will draw twice the time of
starting current.we can insert the external resistance to
limit the current while reversing the armature
terminal.whereas,in field reversal we cannot give any
provision to limit armature over current.
| Is This Answer Correct ? | 25 Yes | 8 No |
Post New Answer View All Answers
Rotation of dc shunt motor is revers by using 2 methods, which method is best and why?
When can one deviate from any flight rules and regulations?
Tell me about stress analysis?
What arethe advantages and disadvantages of high wing loading?
What is the main source of power in aircraft?
What are the steps required to solve the problems of aircraft flying high and at very large speed?
Without air traffic control, what is the minimum descent rate you can descend the plane?
What will be the responsibility of the spacecraft operations, dynamics and controls?
Discuss the challenges and considerations involved in designing supersonic or hypersonic aircraft.
how can u define testing and troubleshooting
You are about to take off the plane in few seconds and a catastrophic engine fails, and your captain tells you not to take off and just stay in the center line. What would you do?
How do you manage interdisciplinary collaboration with other engineering disciplines during the aircraft design process?
What are the different phases of aircraft design?
Can you explain the key principles of aerodynamics and how they are essential in aircraft design?
Discuss in brief the methodology and considerations for the selection ofpropulsion system for a fighter aircraft?
