Electrical Machines For small value armature current Ia the torque developed by a DC series motor is proportional to Ia. √Ia. Ia2. 1/Ia. Ia. √Ia. Ia2. 1/Ia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at any of the above. leading power factor. lagging power factor. unity power factor. any of the above. leading power factor. lagging power factor. unity power factor. 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? generator 2 gets over load 200 MW and 400MW respectively generator 1 gets over load 230.7 MW and 369.23 MW respectively generator 2 gets over load 200 MW and 400MW respectively generator 1 gets over load 230.7 MW and 369.23 MW respectively ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 3. 4. 12. 7. 3. 4. 12. 7. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound 4 pole dc motor has 460 conductors. Find the number of parallel paths between the conductors? 2. data provided is insufficient. 4. 6. 2. data provided is insufficient. 4. 6. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is 0.08 -0.08 -1.92 1.92 0.08 -0.08 -1.92 1.92 ANSWER DOWNLOAD EXAMIANS APP
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