Electrical Machines A motor operates in stable region at which of the following slip? high slip region both 1 and 2 low slip region unity slip high slip region both 1 and 2 low slip region unity slip ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing short circuit and slip tests. open circuit and zero power factor tests. zero power factor and slip tests. open circuit and short circuit tests. short circuit and slip tests. open circuit and zero power factor tests. zero power factor and slip tests. open circuit and short circuit tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor should be hollow. stiff. any of these. flexible. hollow. stiff. any of these. flexible. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the armature current of 5 Amp is flowing through the dc motor the torque produced is 47 Nm. Keeping the speed constant if the armature current is increased to 7 amp, calculate the new torque. Assume losses to be constant. 38.5 Nm. 65.8 Nm. 74 Nm. 27.73 Nm . 38.5 Nm. 65.8 Nm. 74 Nm. 27.73 Nm . ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when induced voltage is high. rate of change of flux is maximum. shaft rotation is high. rate of change of flux is minimum. induced voltage is high. rate of change of flux is maximum. shaft rotation is high. rate of change of flux is minimum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator runs at 750 rpm and generate an emf of 240 V. The armature is wave wound and has 792 conductors. If the total flux from each pole is 0.0145 Wb. What is the leakage co-efficient? 1.4. 1.5. 1.8. 1.2. 1.4. 1.5. 1.8. 1.2. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS