Electrical Machines Hopkinson test is conducted under which of the following condition? full load no load half load any of the above full load no load half load any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC compound motor can be reversed by interchanging armature connections. armature or field connections. series field connections. shunt field connections. armature connections. armature or field connections. series field connections. shunt field connections. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is minimum zero All of these maximum minimum zero All of these maximum ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 2 V 1 V 0 V 4 V 2 V 1 V 0 V 4 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Short circuiting is caused in the armature winding due to failure of insulation between two turns of coil. any of above. failure of insulation between two commutator bars. grounding of two or more turns of the same coil. failure of insulation between two turns of coil. any of above. failure of insulation between two commutator bars. grounding of two or more turns of the same coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss remains constant. None of these increase. decrease. remains constant. None of these increase. decrease. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS