Electrical Machines In a single phase induction motor, the starting torque developed is proportional to 1/V supply voltage V 1/V² V² 1/V supply voltage V 1/V² V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the advantages of parallel operation of alternators? continuity supply is maintained Increase in reliability Increase efficiency under light load conditions All of these continuity supply is maintained Increase in reliability Increase efficiency under light load conditions All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at light loads only low at heavy loads only both A and B low at rated load only low at light loads only low at heavy loads only both A and B low at rated load only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following voltage regulation method is accurate ? ZPF method American standard association method Synchronous impedance method MMf method ZPF method American standard association method Synchronous impedance method MMf method ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 173 A. 240 A. 190 A. 127 A. 173 A. 240 A. 190 A. 127 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When R2 is rotor resistance, X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running condition will be R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. ANSWER DOWNLOAD EXAMIANS APP
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