Electrical Machines In case of DC Shunt Motor electromagnetic torque developed is Inversely proportional to the armature current. Proportional to the square of armature current. None of above. Proportional to the armature current. Inversely proportional to the armature current. Proportional to the square of armature current. None of above. Proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed depends on voltage reactance load angle both 1and 2 voltage reactance load angle both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because 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. rotor is made up of salient poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be 16.55 Nm 15.28 Nm 15.92 Nm 15.6 Nm 16.55 Nm 15.28 Nm 15.92 Nm 15.6 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is sinusoidal rectangular flat-topped co- sinusoidal sinusoidal rectangular flat-topped co- sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because air friction will prevent it. induction motor will become synchronous motor. none of above. rotor torque will not be produced. air friction will prevent it. induction motor will become synchronous motor. none of above. rotor torque will not be produced. ANSWER DOWNLOAD EXAMIANS APP
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