Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them just behind the magnetic neutral axis. just ahead of magnetic neutral axis. in magnetic neutral axis. None of these just behind the magnetic neutral axis. just ahead of magnetic neutral axis. in magnetic neutral axis. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is cheaper in cost. lighter in weight. of low resistivity. easy to cast owing to its low melting point and is easily available. cheaper in cost. lighter in weight. of low resistivity. easy to cast owing to its low melting point and is easily available. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has negative speed regulation? Shunt motor Differential compound motor Cumulative compound motors Series motor Shunt motor Differential compound motor Cumulative compound motors Series motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Value of specific electric loading of Induction motor is in the range of 40 - 400 ampere conductor / metre. 5000 - 45000 ampere conductor / metre. 400 - 4000 ampere conductor / metre. 30000 - 100000 ampere conductor / metre. 40 - 400 ampere conductor / metre. 5000 - 45000 ampere conductor / metre. 400 - 4000 ampere conductor / metre. 30000 - 100000 ampere conductor / metre. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the speed of a dc motor increases with load torque, then it is a permanent magnet motor comulatively compounded motor differentially compounded motor series motor permanent magnet motor comulatively compounded motor differentially compounded motor series motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases then field flux increases. decreases. remains constant. decreases increases. decreases. remains constant. decreases ANSWER DOWNLOAD EXAMIANS APP
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