Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is (1/2)Fmax. 3Fmax. (3/2)Fmax. Fmax. (1/2)Fmax. 3Fmax. (3/2)Fmax. Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? pure resistive load pure inductive load None of these pure capacitive load pure resistive load pure inductive load None of these pure capacitive load 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 magnetic inertia. residual flux. high field resistance. high speed. magnetic inertia. residual flux. high field resistance. high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings is placed in which part of a D.C motor? On armature. On yoke in the pole faces. None of these On yoke in the inter pole gap. On armature. On yoke in the pole faces. None of these On yoke in the inter pole gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A three phase 400 V, 6 pole, 50 Hz, squirrel cage induction motor is running at a slip of 5%. The speed of stator magnetic field with respect to rotor magnetic field and speed of rotor w.r.t stator magnetic field are zero, 950 rpm. 1000 rpm, 950 rpm. zero , - 50 rpm. 1000 rpm, - 50 rpm. zero, 950 rpm. 1000 rpm, 950 rpm. zero , - 50 rpm. 1000 rpm, - 50 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tertiary winding in a transformer is mostly zig - zag delta connected. star connected. delta connected. zig - zag star connected. zig - zag delta connected. star connected. delta connected. zig - zag star connected. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS