Electrical Machines If s is the slip and f is the supply frequency of an induction motor, the frequency of rotor current is given by sf / 2. sf. s2. f / s. sf / 2. sf. s2. f / s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a stepper motor the detente torque means maximum of the static torque with the phase winding unexcited. minimum of the static torque with the phase winding excited. maximum of the static torque with the phase winding excited. minimum of the static torque with the phase winding unexcited. maximum of the static torque with the phase winding unexcited. minimum of the static torque with the phase winding excited. maximum of the static torque with the phase winding excited. minimum of the static torque with the phase winding unexcited. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, the angle between the stator and rotor fields is 0o. 90o. dependent upon the load. 180o. 0o. 90o. dependent upon the load. 180o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors is/are widely used? None of these slip ring induction motor squirrel cage induction motor either of these None of these slip ring induction motor squirrel cage induction motor either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 1.1. 0.05. 0.905. 20. 1.1. 0.05. 0.905. 20. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 10% 21% 41% 11% 10% 21% 41% 11% ANSWER DOWNLOAD EXAMIANS APP
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