112.
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

113.
The open circuit voltage of a compound generator is 250 V. At full load the terminal voltage

114.
While applying Fleming's right-hand rule to and the direction of induced e.m.f., the thumb points towards

118.
In D.C. generators the polarity of the interpoles

119.
Inter-pole flux should be sufficient to

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