Electrical Machines In DC machine torque depends on which of the following? speed armature current (I) both A and B flux (φ) speed armature current (I) both A and B flux (φ) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. How will the machine share, if the load is 600 MW? 230.7 MW and 369.23 MW respectively generator 1 gets over load 200 MW and 400MW respectively generator 2 gets over load 230.7 MW and 369.23 MW respectively generator 1 gets over load 200 MW and 400MW respectively generator 2 gets over load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will remain unchanged. reduce by 5 %. depend on other factors. increase by 5 %. remain unchanged. reduce by 5 %. depend on other factors. increase by 5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on which of the following? Rotor speed. Shaft torque. Core loss component. Synchronous speed. Rotor speed. Shaft torque. Core loss component. Synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has total value. rms value. maximum value. average value. total value. rms value. maximum value. average value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 1 at 90°C. 0.5 at 90°C. 3 at 90°C. 2 at 90°C. 1 at 90°C. 0.5 at 90°C. 3 at 90°C. 2 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
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