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 s2. f / s. sf. sf / 2. s2. f / s. sf. sf / 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 25 ppm. 20 ppm. 45 ppm. 35 ppm. 25 ppm. 20 ppm. 45 ppm. 35 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main purpose of providing tertiary winding in a three phase transformer is to suppress harmonic and unbalance in voltage. to carry extra load. None of these to interconnect three voltage systems. to suppress harmonic and unbalance in voltage. to carry extra load. None of these to interconnect three voltage systems. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 51.5Hz 1.5Hz 48.5Hz 2.5Hz 51.5Hz 1.5Hz 48.5Hz 2.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on shaft torque. synchronous speed. core loss component. rotor speed. shaft torque. synchronous speed. core loss component. rotor speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following relation is correct? Xd > Xq. Xd = Xq. Xd < Xq. None of these Xd > Xq. Xd = Xq. Xd < Xq. None of these ANSWER DOWNLOAD EXAMIANS APP
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