Electrical Machines Iron loss in a transformer mainly occurs in steel core in transformer. transformer insulating oil. winding of transformer. iron made tank of transformer. steel core in transformer. transformer insulating oil. winding of transformer. iron made tank of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T is independent of P. T ∝ P. T ∝ √P. T2 ∝ P3. T is independent of P. T ∝ P. T ∝ √P. T2 ∝ P3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For satisfactory parallel operation of two transformers which of the following conditions is most essential, percentage impedance of all transformers must be same. voltage ratio of all transformers must be same. polarities of all transformers must be same. MVA rating of all transformer inversely proportional to impedance. percentage impedance of all transformers must be same. voltage ratio of all transformers must be same. polarities of all transformers must be same. MVA rating of all transformer inversely proportional to impedance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. mechanical rotatory system. synchronizing power co efficient. restoring torque. damping torque. mechanical rotatory system. synchronizing power co efficient. restoring torque. damping torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? core loss only windage and friction loss both 1 and 2 Copper loss core loss only windage and friction loss both 1 and 2 Copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as f² V² V f f² V² V f ANSWER DOWNLOAD EXAMIANS APP
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