Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to V V2 f f2 V V2 f f2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Shunt. Series. Compound (cummolative). none of these. Shunt. Series. Compound (cummolative). none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are all of above. high maintenance cost. poor overall efficiency. high initial cost. all of above. high maintenance cost. poor overall efficiency. high initial cost. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, the reluctance power varies as sinδ sin2δ cos2δ cosδ sinδ sin2δ cos2δ cosδ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements: To control the speed of a dc shunt motor above the base speed over a reasonably wide range, the motor must 1. have compensating winding 2. have interpole winding 3. be started using a 3-point starter 4. be started using a 4-point starter Of these statements 2 and 4 are correct 1, 2 and 3 are correct 1, 2 and 4 are correct 1 and 3 are correct 2 and 4 are correct 1, 2 and 3 are correct 1, 2 and 4 are correct 1 and 3 are correct 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
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