Electrical Machines Transformer cooling and insulating oil must be of low resistivity. low viscosity. low BDV. high viscosity. low resistivity. low viscosity. low BDV. high viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing open circuit and zero power factor tests. zero power factor and slip tests. short circuit and slip tests. open circuit and short circuit tests. open circuit and zero power factor tests. zero power factor and slip tests. short circuit and slip tests. open circuit and short circuit tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. rotor winding is highly reactive. relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. rotor winding is highly reactive. relative velocity between the stator and rotor mmf’s is zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the motor will become slow. armature will oscillate about original speed as the mean speed motor will attain dangerously high speed armature current will drop motor will become slow. armature will oscillate about original speed as the mean speed motor will attain dangerously high speed armature current will drop ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor winding for a 3-phase slip-ring induction motor having delta-connected stator must be connected in star. delta. None of these delta or star according to need. star. delta. None of these delta or star according to need. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Split phase IM. Shaded pole IM. Cage induction motor. Synchronous motors. Split phase IM. Shaded pole IM. Cage induction motor. Synchronous motors. ANSWER DOWNLOAD EXAMIANS APP
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