In constant power region of 3-phase IM torque-speed
characteristics, if frequency increases voltage
A does not alter B decreases
C increases D none of above
Is it possible to operate a synchronous 2-poles turbogenerator with a still-in-place faulted bar but electrically disconnected ???? If yes, should I act on the other phases as well ???
What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.
PAC and simple Ac different
what is power load and lighiting load?
what is difference between 9kv 5ka surge arrester and 9kv 10ka surge arrester.
why transformer rating in kva and motor rating in kw
what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?
WHAT IS ND RELAY AND HOW DOES IT WORK?
What is vacuum circuit breaker.define with cause and where be use it device?
excitation limit of an excitor
What is the use of iron core in a transformer?
A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03