Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is 1.92 -1.92 0.08 -0.08 1.92 -1.92 0.08 -0.08 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A flat compound generator is obtained from compound generator by connecting a variable resistor in series with the shunt field in parallel with the series field in series with the series field in parallel with the shunt field in series with the shunt field in parallel with the series field in series with the series field in parallel with the shunt field ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 21% 10% 11% 41% 21% 10% 11% 41% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be pulsating and unidirectional steady and unidirectional None of these oscillating pulsating and unidirectional steady and unidirectional None of these oscillating ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be 6% and -4% 4.8% and -3.2% None of these 3.2% and -1.6% 6% and -4% 4.8% and -3.2% None of these 3.2% and -1.6% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines, B is bigger than A for the same current rating A is bigger than B for the same current rating both are of the same size for the same current rating A is bigger than B for the same voltage rating B is bigger than A for the same current rating A is bigger than B for the same current rating both are of the same size for the same current rating A is bigger than B for the same voltage rating ANSWER DOWNLOAD EXAMIANS APP
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