Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 90°. 30°. 120°. 60°. 90°. 30°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW any of the above 66.67 MW and 33.33 MW respectively 33.33 MW and 66.67 MW respectively 50 MW and 50 MW respectively any of the above 66.67 MW and 33.33 MW respectively 33.33 MW and 66.67 MW respectively 50 MW and 50 MW respectively ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? Permanent magnets. Both B and C. None of the options. Electromagnets. Permanent magnets. Both B and C. None of the options. Electromagnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs decrease. None of these either of these. increase. decrease. None of these either of these. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The breakdown torque of a synchronous motor varies as V² applied voltage V 1/V 1/V² V² applied voltage V 1/V 1/V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are the advantages of carbon brush over the copper brush? They are self lubricating in nature In case of any sparking they will be less damaged than copper brushes They are not hard as copper brush All of these They are self lubricating in nature In case of any sparking they will be less damaged than copper brushes They are not hard as copper brush All of these ANSWER DOWNLOAD EXAMIANS APP
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