Electrical Machines Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces noise, parasitic torque, starting torque and pull out torque. noise and parasitic torque, but increase starting and pull-out torque. noise and pullout torque, but increase parasitic and starting torque. noise, parasitic and starting torque, but increase pull out torque. noise, parasitic torque, starting torque and pull out torque. noise and parasitic torque, but increase starting and pull-out torque. noise and pullout torque, but increase parasitic and starting torque. noise, parasitic and starting torque, but increase pull out torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of rotor resistance. Change of supply frequency. Change of supply voltage. Change of number of pole. Change of rotor resistance. Change of supply frequency. Change of supply voltage. Change of number of pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cross magnetization effects which of the following? reduces the terminal voltage commutation both 2 and 3 reduction in main field flux reduces the terminal voltage commutation both 2 and 3 reduction in main field flux ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Total core loss is also called as -------------? Magnetic loss Copper loss Eddy current loss Hysteresis loss Magnetic loss Copper loss Eddy current loss Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine will have maximum efficiency? Electrical power transformer. DC motor. Induction motor. Electrical power generator. Electrical power transformer. DC motor. Induction motor. Electrical power generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Torque angle of a synchorous machine operating from a constant voltage bus is usually defined as the space angle between Rotor mmf wave and resultant flux density wave. Rotor mmf wave and stator mmf wave. Stator mmf wave and resultant mmf wave. Stator mmf wave and resultant flux density. Rotor mmf wave and resultant flux density wave. Rotor mmf wave and stator mmf wave. Stator mmf wave and resultant mmf wave. Stator mmf wave and resultant flux density. ANSWER DOWNLOAD EXAMIANS APP
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