Electrical Machines For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to 75°. 30°. 0°. 45°. 75°. 30°. 0°. 45°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following windings are necessary in case of all dc machines? lap winding open type winding wave winding closed winding lap winding open type winding wave winding closed winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has maximum value. rms value. average value. total value. maximum value. rms value. average value. total value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 220 V. 240 V. 280 V. 150 V. 220 V. 240 V. 280 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/Vt ratio of a DC motor is an indication of running torque. starting torque. speed regulation. efficiency. running torque. starting torque. speed regulation. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical load on it because otherwise it will produce sparking at brushes. develop excessive speed and damage itself. draw too much current. open fuse or circuit breaker. produce sparking at brushes. develop excessive speed and damage itself. draw too much current. open fuse or circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
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