DC Generators In a D.C. generator the critical resistance refers to the resistance of Load Armature Field Brushes Load Armature Field Brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators The coupling field between electrical and mechanical systems of a dc machine is ______ Magnetic field None of the listed here Electric field Both electrical and magnetic fields Magnetic field None of the listed here Electric field Both electrical and magnetic fields ANSWER DOWNLOAD EXAMIANS APP
DC Generators In case of D.C. machine winding, number of commutator segments is equal to Number of armature conductors Number of armature coils Number of armature turns Number of armature coil sides Number of armature conductors Number of armature coils Number of armature turns Number of armature coil sides ANSWER DOWNLOAD EXAMIANS APP
DC Generators If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be Small High The same as rated voltage Zero Small High The same as rated voltage Zero ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature core of a D.C. generator is usually made of Copper Silicon steel Cast-iron Nonferrous material Copper Silicon steel Cast-iron Nonferrous material ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine having 10 poles is rotating at a speed of 10 revolution per second. The number of hysteresis loops formed per second is ______ 10 150 100 50 10 150 100 50 ANSWER DOWNLOAD EXAMIANS APP
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