Electrical Machines Armature reaction in dc motor results open circuit. decrease in speed. short circuit. increase in speed. open circuit. decrease in speed. short circuit. increase in speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the purpose of starting an induction motor, star/delta switch is an equivalent to auto transformer of ratio 57.7% 33.3% 66.3% 50% 57.7% 33.3% 66.3% 50% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 3 point starter All of these 2 point starter 4 point starter 3 point starter All of these 2 point starter 4 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Saving of copper in auto transformer is increased as compared to two winding transformer, when transformation ratio K approaches to two. infinity. zero. unity. two. infinity. zero. unity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking at the middle of the brush. no sparking. sparking at the leading edge of the brush. sparking the trailing edge of the brush. sparking at the middle of the brush. no sparking. sparking at the leading edge of the brush. sparking the trailing edge of the brush. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power? 1920W 2000W 1820W 1450W 1920W 2000W 1820W 1450W ANSWER DOWNLOAD EXAMIANS APP
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