DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To reduce eddy current loss To support the field coils To reduce the reluctance of the magnetic path To spread out flux for better uniformity To reduce eddy current loss To support the field coils To reduce the reluctance of the magnetic path To spread out flux for better uniformity ANSWER DOWNLOAD EXAMIANS APP
DC Motors The direction of rotation of a D.C. series motor can be changed by None of these Either of (A) and (B) above Interchanging field terminals Interchanging supply terminals None of these Either of (A) and (B) above Interchanging field terminals Interchanging supply terminals ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will continue to run The motor will stop The motor will run noisy The armature may burn The motor will continue to run The motor will stop The motor will run noisy The armature may burn ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Increase Decrease Become zero Remains same Increase Decrease Become zero Remains same ANSWER DOWNLOAD EXAMIANS APP
DC Motors At the instant of starting when a D.C. motor is put on supply, it behaves like None of these A capacitive circuit A low resistance circuit A highly resistive circuit None of these A capacitive circuit A low resistance circuit A highly resistive circuit ANSWER DOWNLOAD EXAMIANS APP
DC Motors When two dc series motor are commected in parallel, the resultant speed is Loss than the normal speed More than the normal speed Zero Normal speed Loss than the normal speed More than the normal speed Zero Normal speed ANSWER DOWNLOAD EXAMIANS APP
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