Electrical Machines Open circuit test on transformer gives eddy current loss hysteresis loss copper loss both 1and 2 eddy current loss hysteresis loss copper loss both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Generators work on the principle of production of dynamically and statically induced emf. dynamically induced emf. None of these statically induced emf. dynamically and statically induced emf. dynamically induced emf. None of these statically induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when driven without any excitation, showed an open circuit voltage of 12 V. When the field winding was excited, the voltage dropped to zero. It happened because there was no residual magnetism in the field circuit there was a break in the armature circuit field winding was wrongly connected field resistance was higher than critical resistance there was no residual magnetism in the field circuit there was a break in the armature circuit field winding was wrongly connected field resistance was higher than critical resistance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shunt dc motor the direction of rotation of the motor will reversed. When none of above. only field terminals are changed. only armature terminals are reversed. either field terminals are reversed or armature terminals are reversed. none of above. only field terminals are changed. only armature terminals are reversed. either field terminals are reversed or armature terminals are reversed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will None of these slightly decrease. not change. slightly increase. None of these slightly decrease. not change. slightly increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by Ns = 120f /p × ( 1 - r). Ns = 120f / p × ( 1 - s ). None of these Nr = 120f / p × (1-s). Ns = 120f /p × ( 1 - r). Ns = 120f / p × ( 1 - s ). None of these Nr = 120f / p × (1-s). ANSWER DOWNLOAD EXAMIANS APP
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