Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 36° 30° 72° 18° 36° 30° 72° 18° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit test on transformer gives both 1and 2 eddy current loss hysteresis loss copper loss both 1and 2 eddy current loss hysteresis loss copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is the largest conversion device? Synchronous machine DC machine All of these Induction machine Synchronous machine DC machine All of these Induction machine ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding the magnetization characteristics of a dc generator : 1. It represents the variation of field flux with field current. 2. Variation of open-circuit terminal voltage with field current is independent of speed 3. It is non-linear from zero to rated field current 4. It helps to determine the critical field resistance at a given speed 5. It always starts from the origin Which of these statements are correct ? 1 and 4 3 and 5 1, 2 and 5 2, 3 and 4 1 and 4 3 and 5 1, 2 and 5 2, 3 and 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In the V curve shown in figure below for a synchronous motor, the parameter of Y and X coordinates are, respectively Armature current and torque. Torque and field current. Power factor and field current. Armature current and field current. Armature current and torque. Torque and field current. Power factor and field current. Armature current and field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Crawling in an induction motor is due to insufficient starting torque. slip ring rotor. space harmonics produced by winding currents. time harmonics in supply. insufficient starting torque. slip ring rotor. space harmonics produced by winding currents. time harmonics in supply. ANSWER DOWNLOAD EXAMIANS APP
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