Electrical Machines Commutation in a DC machine may be explained as a process by which electric current in a coil is reversed. in which magnetic field is set up. by virtue of which emf is induced in the armature conductors. how alternate flux affects the main field flux. by which electric current in a coil is reversed. in which magnetic field is set up. by virtue of which emf is induced in the armature conductors. how alternate flux affects the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Thin laminations are used in a machine in order to reduce Hysteresis losses Both 1 and 2 Copper losses Eddy current losses Hysteresis losses Both 1 and 2 Copper losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a resistance split phase motor, what is the range of torque angle? 90° 70° to 85° 0° 25° to 30° 90° 70° to 85° 0° 25° to 30° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be zero. about 2 V. about 50 V. 220 V. zero. about 2 V. about 50 V. 220 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Effiency. Running Torque. Starting torque. Speed regulation. Effiency. Running Torque. Starting torque. Speed regulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise hysteresis loss mechanical loss temperature rise eddy-current loss hysteresis loss mechanical loss temperature rise eddy-current loss ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS