Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is rectangular sinusoidal co- sinusoidal flat-topped rectangular sinusoidal co- sinusoidal flat-topped ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because rotor is made up of salient poles. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. rotor is made up of salient poles. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its efficiency will improve its speed will increase its power factor will reduce its speed will reduce its efficiency will improve its speed will increase its power factor will reduce its speed will reduce ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines shape of net flux density is? peaky in nature flat tapped or trapezoidal sine wave saddle shape peaky in nature flat tapped or trapezoidal sine wave saddle shape ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following rotor requires damper winding? Salient pole rotor. None of these Cylindrical rotor. Both type rotor. Salient pole rotor. None of these Cylindrical rotor. Both type rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will Decrease.d none of these. increase. remains same. Decrease.d none of these. increase. remains same. ANSWER DOWNLOAD EXAMIANS APP
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