A 50Hz,4-pole,3-phase,star-connected synchronous motor has a
synchronous reactance of 12ohmsper phase and negligible
armature resistances.the excitation is such as to give an
open-circuit voltage of 13.2kilovolt.the motor is connected
to 115kilovolt, 50hertz supplying. what maximum load can be
the motor torque,line current and power factor?
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
1.how many types of relays?
2.difference between ATS& STS?
What is partial discharge in power cable?
If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance
and battery of accumulator of open circuit emf 110V and 0.5
Ohm resistance are in parallel what is common terminal
what about SAP/MRP regarding manufacturing of electric
motors and all drives?
PLease anyone can tell me CTUM-15 specification?
what is interference
How you will determine the volume of oil in a particular Distribution transformer.
I have 150/1A Rating CT Suppose if i inject 15A in
CT " Secondary" means what will happen ??????
i have 90kw motor.so i choose connect cable .please what is
parameter checked so please give to formula
Difference between shunt, PMG and AREP excitation. Which is
the most reliable between PMG and AREP.
what is broken conductor indication
I had applied for JE in PSEB, Can you pls send me the
Question bank for related to my field
I am getting above 60 V as open delta voltage against single
phase unit ICT at tertiary delta formed and ICT getting
trippped on NDR. ICT tested and found in order. PTs provided
on tertiary are tested and in order. what may be the reason?
why ct ,cvt should be stored in a vertical position?