DC Generators The commutator of a dc generator acts as An amplifier None of the listed here A rectifier A load An amplifier None of the listed here A rectifier A load ANSWER DOWNLOAD EXAMIANS APP
DC Generators The bearings used to support the rotor shafts are generally Magnetic bearings Ball bearings Needle bearings Bush bearings Magnetic bearings Ball bearings Needle bearings Bush bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in the coil is neutralized by all of the following except Compensating winding Interpoles Shifting of axis of brushes Dummy coils Compensating winding Interpoles Shifting of axis of brushes Dummy coils ANSWER DOWNLOAD EXAMIANS APP
DC Generators The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be 580 V 640 V 600 V 620 V 580 V 640 V 600 V 620 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main factor which leads to unstable parallel operation of flat and over compounded generators is unequal series field resistances unequal speed regulation of their primemovers their rising voltage characteristics unequal number of turns in their series field windings unequal series field resistances unequal speed regulation of their primemovers their rising voltage characteristics unequal number of turns in their series field windings ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of brushes in a commutator depends on Type of winding Voltage Speed of armature Amount of current to be collected Type of winding Voltage Speed of armature Amount of current to be collected ANSWER DOWNLOAD EXAMIANS APP
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