Electrical Machines The wound rotor type IM is used for____________ speed operation. variable. constant. minimum. maximum. variable. constant. minimum. maximum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects voltage but not the torque neither the voltage nor the torque torque but not the voltage both the torque and voltage voltage but not the torque neither the voltage nor the torque torque but not the voltage both the torque and voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. restoring torque. synchronizing power co efficient. mechanical rotatory system. damping torque. restoring torque. synchronizing power co efficient. mechanical rotatory system. damping torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3-phase, 4 pole, 50 Hz synchronous motor the frequency, pole number and the frequency are halved. The motor speed will be 75 rpm 375 rpm 1500 rpm 3000 rpm 75 rpm 375 rpm 1500 rpm 3000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at lagging power factor. unity power factor. any of the above. leading power factor. lagging power factor. unity power factor. any of the above. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the middle of hv side at the phase end of lv side at the neutral side end of hv side at the phase end of hv side at the middle of hv side at the phase end of lv side at the neutral side end of hv side at the phase end of hv side ANSWER DOWNLOAD EXAMIANS APP
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