Electrical Machines For power factor improvement the synchronous motor is to be lightly loaded and over excited lightly loaded and underecited heavily loaded and underexcited heavily loaded and over excited lightly loaded and over excited lightly loaded and underecited heavily loaded and underexcited heavily loaded and over excited ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 270. 30. 180. 45. 270. 30. 180. 45. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as None of these a synchronous motor an induction generator an induction motor None of these a synchronous motor an induction generator an induction motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because relative velocity between stator and rotor mmf’s is not zero. rotor winding is highly reactive. rotor is made up of salient poles. relative velocity between the stator and rotor mmf’s is zero. relative velocity between stator and rotor mmf’s is not zero. rotor winding is highly reactive. rotor is made up of salient poles. relative velocity between the stator and rotor mmf’s is zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following voltage regulation method is accurate ? American standard association method MMf method Synchronous impedance method ZPF method American standard association method MMf method Synchronous impedance method ZPF method ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is of low resistivity. easy to cast owing to its low melting point and is easily available. lighter in weight. cheaper in cost. of low resistivity. easy to cast owing to its low melting point and is easily available. lighter in weight. cheaper in cost. ANSWER DOWNLOAD EXAMIANS APP
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