Electrical Machines For very sensitive and wide speed control, the preferable control method is Ward-Leonard control. Armature control. Field control. Multiple voltage control. Ward-Leonard control. Armature control. Field control. Multiple voltage control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be proportional to square of rotor speed. constant independent of speed. proportional to rotor speed. zero. proportional to square of rotor speed. constant independent of speed. proportional to rotor speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motor operation depends on either of these. rotating magnetic field. stationary magnetic field. None of these either of these. rotating magnetic field. stationary magnetic field. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to transformer with short-circuited secondary. capacitor run IM. repulsion motor type starting. synchronous motor. transformer with short-circuited secondary. capacitor run IM. repulsion motor type starting. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is critical, the power factor of the alternator is leading power factor. unity power factor. None of these lagging power factor. leading power factor. unity power factor. None of these lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept depends on the material of stator and the rotor. air gap does not matter. as wide as possible. as small as possible. depends on the material of stator and the rotor. air gap does not matter. as wide as possible. as small as possible. ANSWER DOWNLOAD EXAMIANS APP
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