Electrical Machines If the flux of DC motor approaches zero, its speed will approach zero. aprroach infinity. between zero and infinity. remain unchanged. approach zero. aprroach infinity. between zero and infinity. remain unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively? shaded, shaded unshaded, shaded shaded, unshaded unshaded, unshaded shaded, shaded unshaded, shaded shaded, unshaded unshaded, unshaded ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased power angle decrease and power factor increase both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease power angle decrease and power factor increase both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 40, s = 5.79 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control provides speed control above rated speed. in both direction. below rated speed. in one direction only. above rated speed. in both direction. below rated speed. in one direction only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ? 1 and 2 1 and 3 2 alone 1, 2 and 3 1 and 2 1 and 3 2 alone 1, 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
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