Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3.33% +3% -3.33% -3% +3.33% +3% -3.33% -3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The polarity of a DC generator can be reversed by reversing field electric current as well as direction of rotation. any of above. reversing the field current. increasing field current. reversing field electric current as well as direction of rotation. any of above. reversing the field current. increasing field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Reactive power generated or delivered significantly depends on excitation. frequency. load angle. both 1 and 2. excitation. frequency. load angle. both 1 and 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase power factor. starting torque. cost of operation. breaking torque. power factor. starting torque. cost of operation. breaking torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, armature reaction refers to what? None of these Effect of armature flux on the main field flux. Effect of armature flux on the load. Effect of field flux on the armature flux. None of these Effect of armature flux on the main field flux. Effect of armature flux on the load. Effect of field flux on the armature flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronising power of a synchronous motor varies All of these directly as Xs2 inversely as 1/Xs directly as synchronous reactances Xs All of these directly as Xs2 inversely as 1/Xs directly as synchronous reactances Xs ANSWER DOWNLOAD EXAMIANS APP
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