Electrical Machines In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then E ∝ 1/(φf) E ∝ φ/f E ∝ φf E ∝ f/φ E ∝ 1/(φf) E ∝ φ/f E ∝ φf E ∝ f/φ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchorous generator connected to an infinite bus is over excited. Considering only the reactive power from the point view of the system the machine acts as A capacitor. None of these. an inductor. A resistor. A capacitor. None of these. an inductor. A resistor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 90°. 60°. 30°. 120°. 90°. 60°. 30°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The polarity of a DC generator can be reversed by reversing field electric current as well as direction of rotation. increasing field current. any of above. reversing the field current. reversing field electric current as well as direction of rotation. increasing field current. any of above. reversing the field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a resistance split phase motor, what is the range of torque angle? 25° to 30° 70° to 85° 90° 0° 25° to 30° 70° to 85° 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator on no-load, the air gap flux distribution in space is triangular. sinusoidal. flat topped. pulsating. triangular. sinusoidal. flat topped. pulsating. ANSWER DOWNLOAD EXAMIANS APP
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