Electrical Machines Which of the following is not a necessary condition to be satisfied for synchronising an incoming alternator to an already operating alternator? same prime mover speed same voltage magnitude same phase sequence same frequency same prime mover speed same voltage magnitude same phase sequence same frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by improper design of stator laminations harmonics developed in the motor high loads low voltage supply improper design of stator laminations harmonics developed in the motor high loads low voltage supply ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Motor dc compound motor. dc shunt with armature resistance control. dc shunt motor with field weakening. dc series motor. dc compound motor. dc shunt with armature resistance control. dc shunt motor with field weakening. dc series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V-curve of synchronous motor shows the variation of power factor and supply voltage during hunting All of these supply voltage and field current at constant excitation power factor and dc excitation at constant load power factor and supply voltage during hunting All of these supply voltage and field current at constant excitation power factor and dc excitation at constant load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 48.5Hz 51.5Hz 1.5Hz 2.5Hz 48.5Hz 51.5Hz 1.5Hz 2.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt = Ea + Ia(ra + rs) Vt= Ea– Iara Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt = Ea + Ia(ra + rs) Vt= Ea– Iara ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS