Electrical Machines In a synchronous motor torque or load angle δ ------------- with increase in load increases decreases remains unaffected None of these increases decreases remains unaffected None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine current and emf at the terminals are alternating. current and emf in armature are unidirectional current and emf in armature are alternating. emf in armature conductors and at the terminals is alternating. current and emf at the terminals are alternating. current and emf in armature are unidirectional current and emf in armature are alternating. emf in armature conductors and at the terminals is alternating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a DC series motor is Proportional to the square of the armature current. Inversely proportional to the armature current. Proportional to field current. Proportional to the armature current. Proportional to the square of the armature current. Inversely proportional to the armature current. Proportional to field current. Proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Essential conditions for two DC generators are connecting for parallel operation is/are terminal voltage should be same. rating of generators should be same. polarities should be same. both A and B. terminal voltage should be same. rating of generators should be same. polarities should be same. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is 1 : 1. none. N12 : N22. N1 : N2. 1 : 1. none. N12 : N22. N1 : N2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronising power of a synchronous motor varies All of these directly as Xs2 inversely as 1/Xs directly as synchronous reactances Xs All of these directly as Xs2 inversely as 1/Xs directly as synchronous reactances Xs ANSWER DOWNLOAD EXAMIANS APP
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