What is the possible cause for failure of lightning arrestors in outdoor substation under normal condition
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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 phase balanced voltage source at 50 hz is applied to motor it will run at a)1500rpm b)1000rpm c)750 rpm d)zero rpm
13 Answers Essar, PSPCL, PSTCL,
What are the various types of BUSBAR Schemes? explain each
what is the difference between static and dynamic induced emf?
14 Answers College School Exams Tests, MRF, Suraj Constructions,
when the flux enters into saturation mode then what will be the secondary voltage of the normal t/f?....high or low ? explain ...how?
why DOL starter is use in induction motor as it is not reduce the starting torque
i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.
what is meant by moulded case circuit breaker ?
Percentage losses in power generation?
what is the principal of transformer?
How to resolve if Diesel generator stop while running ?
How can we explain that what is the power factor?
What will happen if the d.c. Machine is operated below rated speed?
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