In a salient pole synchronous motor, the developed reluctance torque attains the maximum value when the load angle in electrical degrees is

A three-phase, 50Hz salient-pole synchronous motor has a per-phase direct-axis reactance  of 0.8pu and a per-phase quadrature-axis reactance of 0.6pu. Resistance of the machine is negligible. It is drawing full-load current at 0.8pf (leading). When the terminal voltage is 1 pu, per-phase induced voltage, in pu, is_______________.

A three-phase, salient pole synchronous motor is connected to an infinite bus. It is operated at no load at normal excitation. The field excitation of the motor is first reduced to zero and then increased in the reverse direction gradually. Then the armature current

The direct axis and quadrature axis reactance of a salient pole alternator are 1.2p.u. and 1.0 p.u. respectively.  The armature resistance is negligible. If this alternator is delivering rated kVA at upf and at rated voltage then its power angle is