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,

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What are the various types of BUSBAR Schemes? explain each

1 Answers   NTPC,

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what is the difference between static and dynamic induced emf?

14 Answers   College School Exams Tests, MRF, Suraj Constructions,

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when the flux enters into saturation mode then what will be the secondary voltage of the normal t/f?....high or low ? explain ...how?

1 Answers  

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why DOL starter is use in induction motor as it is not reduce the starting torque

2 Answers   Maruti Suzuki,

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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.

0 Answers   SCM,

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what is meant by moulded case circuit breaker ?

0 Answers   ABB,

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Percentage losses in power generation?

0 Answers   Nespak, Trimax,

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what is the principal of transformer?

2 Answers  

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How to resolve if Diesel generator stop while running ?

0 Answers   Toyota,

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How can we explain that what is the power factor?

5 Answers  

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What will happen if the d.c. Machine is operated below rated speed?

0 Answers  

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