DC Generators The insulating material used between the commutator segments is normally Insulating varnish Paper Mica Graphite Insulating varnish Paper Mica Graphite ANSWER DOWNLOAD EXAMIANS APP
DC Generators Magnetic field in a D.C. generator is produced by None of these Electromagnets Both (A) and (B) Permanent magnets None of these Electromagnets Both (A) and (B) Permanent magnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators The yoke of a dc machine is made of Silicon steel Cast steel Aluminum Soft iron Silicon steel Cast steel Aluminum Soft iron ANSWER DOWNLOAD EXAMIANS APP
DC Generators Stray losses consist of Magnetic and mechanical losses Mechanical and copper losses None of the listed here Magnetic and copper losses Magnetic and mechanical losses Mechanical and copper losses None of the listed here Magnetic and copper losses ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used 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 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 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that It is expensive Terminal voltage drops considerably Shunt field circuit has high resistance Generated voltage is small It is expensive Terminal voltage drops considerably Shunt field circuit has high resistance Generated voltage is small ANSWER DOWNLOAD EXAMIANS APP
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