DC Generators While applying Fleming's right-hand rule to and the direction of induced e.m.f., the thumb points towards Direction of motion of conductor, if forefinger points along the lines of flux Direction of induced e.m.f. Direction of flux Direction of motion of the conductor if forefinger points in the direction of generated e.m.f. Direction of motion of conductor, if forefinger points along the lines of flux Direction of induced e.m.f. Direction of flux Direction of motion of the conductor if forefinger points in the direction of generated e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines To increase the series flux So that two similar machines will pass approximately equal currents to the load To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines To increase the series flux So that two similar machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a four-pole D.C. machine Two north poles follow two south poles Alternate poles are north and south All the four poles are north poles All the four poles are south poles Two north poles follow two south poles Alternate poles are north and south All the four poles are north poles All the four poles are south poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the flux per pole of dc generator is halved but its speed is doubled, its generated emf will Be doubled Be halved Be quadrupled Remain the same Be doubled Be halved Be quadrupled Remain the same ANSWER DOWNLOAD EXAMIANS APP
DC Generators The insulating material used between the commutator segments is normally Insulating varnish Paper Graphite Mica Insulating varnish Paper Graphite Mica ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature core of a D.C. generator is usually made of Copper Cast-iron Silicon steel Nonferrous material Copper Cast-iron Silicon steel Nonferrous material ANSWER DOWNLOAD EXAMIANS APP
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