Electrical Machines The slip of an induction motor during DC rheostatic braking is 2 - s. 2 + s. 1 - s. s. 2 - s. 2 + s. 1 - s. s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected either of these depending on the design of the motor through inductive coupling in series in parallel either of these depending on the design of the motor through inductive coupling in series in parallel ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 59.2%. 57.1%. 88.8%. 48.0%. 59.2%. 57.1%. 88.8%. 48.0%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve power level. Improve power factor. Improve current level. Improve voltage level. Improve power level. Improve power factor. Improve current level. Improve voltage level. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are high maintenance cost. high initial cost. all of above. poor overall efficiency. high maintenance cost. high initial cost. all of above. poor overall efficiency. 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 = 50, s = 4.43 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 50, s = 4.43 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. ANSWER DOWNLOAD EXAMIANS APP
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