Electrical Machines Wave winding is employed in DC machine of low current and low voltage rating. low current and high voltage rating. high current and low voltage rating. high current and low voltage rating. low current and low voltage rating. low current and high voltage rating. high current and low voltage rating. high current and low voltage rating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the rotating losses of machine? Hysteresis losses All of the them Friction and windage losses Eddy current losses Hysteresis losses All of the them Friction and windage losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the no-voltage release in a DC motor starter fails to operate on failure of supply, on resumption of supply the motor will get damaged. start automatically without trouble. not start automatically. develop very low starting torque. get damaged. start automatically without trouble. not start automatically. develop very low starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 5% 10% 40% 19% 5% 10% 40% 19% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators brushes are used for convert ac armature current in to dc collecting of voltage collecting of current without any sparkings reduce eddy current loss convert ac armature current in to dc collecting of voltage collecting of current without any sparkings reduce eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 1 KVA, 230 V, 50 Hz, single phase transformer has an eddy current loss of 30 watts. The eddy current loss when the transformer is excited by a dc source of same voltage will be 30 W zero watt less than 30 W more than 30 W 30 W zero watt less than 30 W more than 30 W ANSWER DOWNLOAD EXAMIANS APP
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