DC Generators To avoid formation of grooves in the commutator of a D.C. machine All of these The brushes of same polarity should track each other The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving All of these The brushes of same polarity should track each other The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving 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 620 V 600 V 580 V 640 V 620 V 600 V ANSWER DOWNLOAD EXAMIANS APP
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 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 flux Direction of induced e.m.f. 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 flux Direction of induced e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Generators The critical resistance of the D.C. generator is the resistance of Field Armature Brushes Load Field Armature Brushes Load ANSWER DOWNLOAD EXAMIANS APP
DC Generators A shunt generator gives its greatest voltage at None of the listed here Full load Half full load No load None of the listed here Full load Half full load No load ANSWER DOWNLOAD EXAMIANS APP
DC Generators The overall efficiency of a dc generator is maximum when its variable loss is equal to Iron loss Stray loss Mechanical loss Constant loss Iron loss Stray loss Mechanical loss Constant loss ANSWER DOWNLOAD EXAMIANS APP
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