Electrical Machines In a loaded DC generator, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will deteriorate with rise in terminal voltage. improve with fall of terminal voltage. improve with rise in terminal voltage. deteriorate with fall of terminal voltage. deteriorate with rise in terminal voltage. improve with fall of terminal voltage. improve with rise in terminal voltage. deteriorate with fall of terminal voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field winding connection of DC shunt motor is changed It will run in same direction. motor will become slow. It will run in opposite direction. motor will not run. It will run in same direction. motor will become slow. It will run in opposite direction. motor will not run. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/√3 1/3 3 √3 1/√3 1/3 3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will not run. get damaged. continue running in the same direction as before. run in a direction opposite to previous one. not run. get damaged. continue running in the same direction as before. run in a direction opposite to previous one. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is 0.08 pu. 0.02 pu. 0.16 pu. 0.01 pu. 0.08 pu. 0.02 pu. 0.16 pu. 0.01 pu. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Crawling in an induction motor is due to slip ring rotor. insufficient starting torque. time harmonics in supply. space harmonics produced by winding currents. slip ring rotor. insufficient starting torque. time harmonics in supply. space harmonics produced by winding currents. ANSWER DOWNLOAD EXAMIANS APP
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