Electrical Machines Flashing the field of DC generator means creating residual magnetism by a DC source. making the magnetic losses forces parallel. neutralising residual magnetism. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. making the magnetic losses forces parallel. neutralising residual magnetism. increasing flux density by adding extra turns of winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging and crawling are phenomena associated with the former at a fraction of its rate speed and the latter during starting. the former during starting and the latter at a fraction of its rated speed. cage induction machines and they are essentially the same. any of the above. the former at a fraction of its rate speed and the latter during starting. the former during starting and the latter at a fraction of its rated speed. cage induction machines and they are essentially the same. any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The inertia constant H of a synchronous condenser is greater than that of hydro generator. none of these. greater than that of turbo alternator. equal to that of the effective length of the line. greater than that of hydro generator. none of these. greater than that of turbo alternator. equal to that of the effective length of the line. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of an induction motor operating at no load will have a value around unity 0.9 lag 0.2 lag 0.2 lead unity 0.9 lag 0.2 lag 0.2 lead ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When an electric train is moving down a hill, the DC motor will operate as DC series motor. DC series generator. DC shunt motor. DC shunt generator. DC series motor. DC series generator. DC shunt motor. DC shunt generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In alternator, the rotary part is magnetic field poles. core. armature. none of these. magnetic field poles. core. armature. none of these. ANSWER DOWNLOAD EXAMIANS APP
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