Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Ph will increase but Pe will decrease Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Ph will increase but Pe will decrease Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor slots are slightly skewed in squirrel cage induction motor to increase the strength of rotor bars. provide ease of fabrication. reduce the magnetic hum and locking tendency of rotor. decrease the amount of copper to be used. increase the strength of rotor bars. provide ease of fabrication. reduce the magnetic hum and locking tendency of rotor. decrease the amount of copper to be used. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Use of fractional pitch winding results in reduced leakage reactance. results in reduced axial length of the machine. make it stiffer. All of these results in reduced leakage reactance. results in reduced axial length of the machine. make it stiffer. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eddy current loss will depends on All of these Thickness Flux density Frequency All of these Thickness Flux density Frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces noise and pullout torque, but increase parasitic and starting torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic torque, starting torque and pull out torque. noise, parasitic and starting torque, but increase pull out torque. noise and pullout torque, but increase parasitic and starting torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic torque, starting torque and pull out torque. noise, parasitic and starting torque, but increase pull out torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has the highest power factor at full load? Capacitor start Resistance split phase Capacitor run Shaded pole Capacitor start Resistance split phase Capacitor run Shaded pole ANSWER DOWNLOAD EXAMIANS APP
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