Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 420 V. 400 V. 480 V. 350 V. 420 V. 400 V. 480 V. 350 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power flow of a dc motor, with respect to a DC generator is modified. increased. none of these. reversed. modified. increased. none of these. reversed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Star - delta Delta - delta Star - star Delta - star Star - delta Delta - delta Star - star Delta - star ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of low resistivity. low viscosity. low BDV. high viscosity. low resistivity. low viscosity. low BDV. high viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/Vt ratio of a DC motor is an indication of speed regulation. starting torque. running torque. efficiency. speed regulation. starting torque. running torque. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In alternator, the rotary part is none of these. magnetic field poles. armature. core. none of these. magnetic field poles. armature. core. ANSWER DOWNLOAD EXAMIANS APP
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