Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be None of these steady and unidirectional oscillating pulsating and unidirectional None of these steady and unidirectional oscillating pulsating and unidirectional ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor, the speed will____ if the voltage increases, neglecting armature saturation. remain the same. decrease. be unpredictable. increase remain the same. decrease. be unpredictable. increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/Vt ratio of a DC motor is an indication of running torque. speed regulation. efficiency. starting torque. running torque. speed regulation. efficiency. starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3 - Φ, 4 pole, 50 Hz IM rotating at full load speed of 1440 rpm, calculate speed of rotor field with respect to rotor structure and stator structure respectively? 60, 1500. 1440, 1500. 60, 1440. 50, 1500. 60, 1500. 1440, 1500. 60, 1440. 50, 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to f V2 f2 V f V2 f2 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. ANSWER DOWNLOAD EXAMIANS APP
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