DC Generators In a D.C. machine stray loss is the sum of Total copper loss and mechanical loss Shunt field copper loss and mechanical loss Iron loss and mechanical loss Armature copper loss and iron loss Total copper loss and mechanical loss Shunt field copper loss and mechanical loss Iron loss and mechanical loss Armature copper loss and iron loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The bearings used to support the rotor shafts are generally Ball bearings Needle bearings Bush bearings Magnetic bearings Ball bearings Needle bearings Bush bearings Magnetic bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following generator provides approximately constant voltage from no load to full load? Over compounded Series Shunt Flat compounded Over compounded Series Shunt Flat compounded ANSWER DOWNLOAD EXAMIANS APP
DC Generators Magnetic field in a D.C. generator is produced by Both (A) and (B) None of these Permanent magnets Electromagnets Both (A) and (B) None of these Permanent magnets Electromagnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. generators are running in parallel an equalizer bar is used So that the two identical machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both the machines To increase the series flux To increase the generated e.m.f. So that the two identical machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both the machines To increase the series flux To increase the generated e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of brushes in a commutator depends on Amount of current to be collected Type of winding Speed of armature Voltage Amount of current to be collected Type of winding Speed of armature Voltage ANSWER DOWNLOAD EXAMIANS APP
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