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modern complex systems are normally constructed by interconnecting sub-unitstherefore the systems engineer is often not too concerned about the
ac motorsdc motors that have their magnetic fields produced by coils as described earlier can in principle be powered from ac as well since
i have to design a project title quotedge determining techniques for low quality images in different lighting conditions and we use matlab for images
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the french scientist ampere 1775- 1836 conducted a series of experiments on the force between current
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the reversibility principle of electrical machines states that an electrical machine can be used to operate either as a motor converting electrical
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electric current electric current is a flow of electrons each electron carries a very small amount of negative charge 16 x 10-19 coulombs a
electrical circuits and systemselectrical systems allow energy to be conveniently delivered from the point of supply to the point of application
digital circuitsin analog circuits we think something about voltages on terminals ranging over natural values this provides us
a dc generator has 300 turns in each field coil the flux per pol is 01 wb find the average value of emf inducet in field winding in the flux decays
abcd propagation of an optical ray through a system can be described by a straightforward two by two matrix in ray optics the feature of a system
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there are two practical ways of improving commutation i.e. of making current reversal in the short - circuited coil as sparkless as possible. these
q. what is meant by armature reaction. explain briefly the bad effects of armature reactions. sol. by armature reaction is meant the effect of
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currents induced in armature conductors of a d.c. generator are alternating. to make their flow unidirectional in the external circuit we need a
q. the armature of 6 -pole dc generator has a wave winding containing 664 conductors. calculate the generator emf when flux per pole is 0.06 weber
q. two shunt wound generators running in parallel supply a total load current of 4000 a. each generator has an armature resistance of 0.02? and a
q. draw the various characterstics of a dc shunt generator and explain critical resistance. sol. following are three most important
these are small poles fixed to the yoke and spaced in bw the main poles. they are wound with comparatively few heavy gauge cu wire turns and are
q. draw the developed diagram of a simplex progressive 2 layer lap winding for a 4 pole generator with 12 coils clearly indicating the position of