Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? either GNA or MNA GNA None of these MNA either GNA or MNA GNA None of these MNA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a dc motor the ratio Eb / E is indicative of ratio of starting to running current. ratio of input to output voltage. ratio of starting to running torque. efficiency. ratio of starting to running current. ratio of input to output voltage. ratio of starting to running torque. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have more breakdown torque. leading power factor. higher efficiency. less breakdown torque. more breakdown torque. leading power factor. higher efficiency. less breakdown torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to high speed. residual flux. high field resistance. magnetic inertia. high speed. residual flux. high field resistance. magnetic inertia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC Series motor is connected across an AC supply it will burn. run at lower speed. run at normal speed. not run. burn. run at lower speed. run at normal speed. not run. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve reduced size. high efficiency. quick acceleration. low starting torque. reduced size. high efficiency. quick acceleration. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS