DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving The brushes of same polarity should track each other All of these The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving The brushes of same polarity should track each other All of these ANSWER DOWNLOAD EXAMIANS APP
DC Generators An 8 pole duplex lap winding will have ______ parallel paths. 8 16 32 4 8 16 32 4 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of parallel paths in a simplex lap winding is equal to 2 Number of pairs of poles None of the listed here Number of poles 2 Number of pairs of poles None of the listed here Number of poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators The efficiency of a dc generator is maximum when its variable loss is Equal to half of constant loss Equal to double the constant loss Equal to Constant loss None of the listed here Equal to half of constant loss Equal to double the constant loss Equal to Constant loss None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Open circuited armature coil of a D.C. machine is None of these Both of the listed here Identified by the scarring of the commutator segment to which open circuited coil is connected Indicated by a spark completely around the commutator None of these Both of the listed here Identified by the scarring of the commutator segment to which open circuited coil is connected Indicated by a spark completely around the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be Less than 150 V 150 V None of these Greater than 150 V Less than 150 V 150 V None of these Greater than 150 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS