Electrical Machines For the purpose of starting an induction motor, star/delta switch is an equivalent to auto transformer of ratio 66.3% 33.3% 50% 57.7% 66.3% 33.3% 50% 57.7% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will decrease either increase or decrease increase None of these decrease either increase or decrease increase None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Width of a carbon brush should be equal to the width more than 3 commutator segment. the width of the 2 to 3 commutator segment. less than the width of commutator segment. the width of the 1 to 2 commutator segment. the width more than 3 commutator segment. the width of the 2 to 3 commutator segment. less than the width of commutator segment. the width of the 1 to 2 commutator segment. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine is invariably provided with forced ventilation? 50 MW generator in a power plant. Fractional horse power high speed motor. Hermetically sealed motor of refrigerator. Fractional horse power slow speed motor. 50 MW generator in a power plant. Fractional horse power high speed motor. Hermetically sealed motor of refrigerator. Fractional horse power slow speed motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Kh is hysteresis constant, f is supply frequency, Bm maximum flux density in core of transformer, the expression of hysteresis loss in transformer, is given by Khf2Bm1.6. KhfBm1.6. KhfBm. KhfBm3. Khf2Bm1.6. KhfBm1.6. KhfBm. KhfBm3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a high reluctance motor. It is a variable speed motor. It is a constant speed motor. It is a step angled motor. It is a high reluctance motor. It is a variable speed motor. It is a constant speed motor. It is a step angled motor. ANSWER DOWNLOAD EXAMIANS APP
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