WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC
- 8 Answers
- 14183 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / sunit saini
the working principle of syn/mac. is mag. locking which is
not possible in ac
| Is This Answer Correct ? | 9 Yes | 1 No |
Post New Answer View All Answers
How to work meggar?
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
What is the armature mmf in a D.C machine?
what is the setting of locked rotor in HT motor ? (answer expecting in percentage)
Define rise time.
What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?
how to calculate the power factor when instantaneous voltage and current has harmonics in it ?
what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.
WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.
ht side line to earth voltage
What is the safety of UPS?
what is conductor constant of raccun conductor
Where servomechanism is used?
what material is used in capaciter
Which types of gate insttaled in static switch. Please give me answer.
