we know that dc motors are more superior then three phase
induction motors in torque generation though they are not
much used in industries why?
Answer Posted / naeem anwar
mostly, industry uses an induction motors for constant
speed as required for your jobs just like paper mills,
variation in speed cause paper broken etc.
secondly, vfd(variable frequency drive )are made mostly to
control different parameters of AC motors.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?
how many single tension hardware are required on a double circuit transmission tower?
What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.
What consists of 2 or more thermocouples to be connented series?
what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.
give some advantages and disadvantages of combiniing the session, presentation, and application layer in the osi model into one single application layer in the internet model
what is the formula of starting current of 3phase and 1 phase motor???
Can any body tell me the different types of LT cables & their application.
a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
why steady state stability limit is greater than transient stability limit ? How it can be explained ?
what types of electrical & mechanical test conducted in switchyard?
we have a 2.5hp Starite electric motor water pump,the elec motor burned out,we need to replace starting capacitor(old capacitor specs erased),what microfarad rating capacitor do we need? 110-125V
various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.
why the pf of semiconductor device is improved the electrical devices
What is meant by coupling capacitor?