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each phase of a 3-phase transformer is rated 66 kv230 v 200 kva with a series reactance of 8a calculate the reactance
1 what is a transformer explain the functions it fulfils as an element of a power system2 differentiate between core
a transformer of rating 20 kva 2000200 v has the following parameterscore loss at rated voltage 95 wa calculate
two 110-v single-phase furnaces take loads of 500 kw and 800 kw respectively at a power factor of 071 lagging and are
a 4-pole 50-hz induction motor has 24 stator slots with 2-layer winding it has 16-turn coils chorded short-pitched by
a 50-hz synchronous salient pole generator is driven by a hydro-electric turbine at a speed of 125 rpm there are 576
1 a 6-pole wave-connected dc armature has 300 conductors and runs at 1200 rpm the emf generated is 600 v find the
1 a three-phase ac linear motor has armature winding wavelength of 30 cm the supply currents have a frequency of 75 hza
1 calculate the short-pitching angle to eliminate the fifth harmonic in the induced emf of a synchronous generator what
1 calculate the voltage induced in the armature of a 4-pole lap-wound dc machine having 728 conductors and running at
a 3-phase 50 hz 4-pole 400 v wound rotor induction motor has a stator winding d-connected and a rotor winding
a 50 hz induction motor runs at 576 rpm at full load determinea the synchronous speed and the number of polesb the
a p-pole machine has a sinusoidal field distribution as shown in fig p538 the armature carries a uniform current sheet
a 3-phase induction motor runs at a speed of 1485 rpm at no-load and at 1350 rpm at fullload when supplied from a 50-hz
the induction machine of prob 514 has a stator length of 28 cm and a mean air-gap diameter of 18 cm the machine air-gap
projectthis course project is intended to be an individual effort project the student is required to complete the work
1 taking the b-wave to be sinusoidal derive the expression for fluxpole2 write the expression for flux linkages of an
1 explain the process of how an induction motor develops torque when ac supply is connected to its stator why it cannot
1 list the type of losses in electric machine what is the nature of each loss2 what is the relative speed between
1 what is the significance of a winding diagram2 when do you use concentric winding3 what are the advantages of
in a 110 v compound generator the resistance of the armature shunt and series windings are 006 25 and 005 w
a 600 v dc motor drives a 60 kw load at 900 rpm the shunt field resistance is 100 w and the armature resistance is 016
a dc motor drives a 100 kw generator having an efficiency of 87a what should be the kw rating of the motorb if the
a starter is to be designed for a 10 kw 250 v shunt motor the armature resistance is 015 omega this motor is to be
a 10 kw 250 v shunt motor has an armature resistance of 05 omega and a field resistance of 200 omega at no load and