Electrical Machines Which of the following DC Motor requires 3 point starter? Series motor. Shunt, compound and series motor. Shunt motor as well as compound motors. Shunt motor. Series motor. Shunt, compound and series motor. Shunt motor as well as compound motors. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is zero 50 V 20 V 40 V zero 50 V 20 V 40 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When operating, two or more transformers in parallel, % impedance of these transformers should be inversely proportional to MVA rating of transformers. same. proportionate to MVA rating of transformers. such that actual impedance of all transformers would be same. inversely proportional to MVA rating of transformers. same. proportionate to MVA rating of transformers. such that actual impedance of all transformers would be same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/3 √3 1/√3 3 1/3 √3 1/√3 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? Good voltage regulation Low short circuit current None of these High voltage regulation Good voltage regulation Low short circuit current None of these High voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor, the speed will____ if the voltage increases, neglecting armature saturation. increase remain the same. be unpredictable. decrease. increase remain the same. be unpredictable. decrease. ANSWER DOWNLOAD EXAMIANS APP
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