Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 12 5 10 24 12 5 10 24 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of transformer. condition of bushings. condition of bushing stud. condition of transformer oil. condition of transformer. condition of bushings. condition of bushing stud. condition of transformer oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following load normally needs starting torque more than rated torque? Air compressors. Blowers. Centrifugal pumps. Conveyers. Air compressors. Blowers. Centrifugal pumps. Conveyers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will remains same. increase. Decrease.d none of these. remains same. increase. Decrease.d none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fifth harmonic component of the induced voltage in three phase AC generator can be eliminated by using a winding pitch of 2 / 3. 4 / 5. 5 / 6. 6 / 7. 2 / 3. 4 / 5. 5 / 6. 6 / 7. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in squirrel cage induction motor. dc shunt motor. synchronous motor. slip ring induction motor. squirrel cage induction motor. dc shunt motor. synchronous motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
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