Electrical Machines Larger values of air flux density is taken while designing IM for both. none. larger output. larger bore diameter. both. none. larger output. larger bore diameter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor electromagnetic torque developed is Proportional to the armature current. Proportional to the square of armature current. None of above. Inversely proportional to the armature current. Proportional to the armature current. Proportional to the square of armature current. None of above. Inversely proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 40% 10% 5% 19% 40% 10% 5% 19% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will burn. run at very low speed. run at very high speed. start haunting. burn. run at very low speed. run at very high speed. start haunting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 25 Hz 50 Hz 100 Hz 0 Hz 25 Hz 50 Hz 100 Hz 0 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be no resistance is connected. series. parallel. any one of the connection. no resistance is connected. series. parallel. any one of the connection. ANSWER DOWNLOAD EXAMIANS APP
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