Electrical Machines The 3 - Φ induction motors are, by a very considerable margin, the most widely used AC motors as they have very good speed regulation. they have maximum efficiency and maximum starting torque. they are capable of operation under range of leading and lagging pf. these are cheaper in cost, simple and rugged in construction. they have very good speed regulation. they have maximum efficiency and maximum starting torque. they are capable of operation under range of leading and lagging pf. these are cheaper in cost, simple and rugged in construction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/V ratio of a DC motor is an indication of Running Torque. Starting torque. Effiency. Speed regulation. Running Torque. Starting torque. Effiency. Speed regulation. 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 In a DC machine, the angle between the stator and rotor fields is 180o. 90o. dependent upon the load. 0o. 180o. 90o. dependent upon the load. 0o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 0.2 ohm 2 ohm. 100 ohm 10 ohm 0.2 ohm 2 ohm. 100 ohm 10 ohm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a three phase induction motor has an impedance of 0.4 + j4 ohm per phase at standstill the maximum torque occurs at a slip of _____________. 50 %. 25 %. 10 %. 15 %. 50 %. 25 %. 10 %. 15 %. ANSWER DOWNLOAD EXAMIANS APP
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