Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 50Hz 1 Hz 2.5Hz 2HZ 50Hz 1 Hz 2.5Hz 2HZ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor remains same. None of these increases. decreases. remains same. None of these increases. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.9 lag unity 0.2 lag 0.2 lead 0.9 lag unity 0.2 lag 0.2 lead ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 600 60 40 660 600 60 40 660 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction generator None of these a synchronous motor an induction motor an induction generator None of these a synchronous motor an induction motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, the electricity produced in armature is DC. armature is not present in DC generator. None of these AC. DC. armature is not present in DC generator. None of these AC. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS