Electrical Machines In dc motors, under leading pole tips flux density will--------? None of these either increase or decrease decrease increase None of these either increase or decrease decrease increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of squirrel cage induction motor. hysteresis motor. stepper motor. slip ring induction motor. squirrel cage induction motor. hysteresis motor. stepper motor. slip ring induction motor. 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, 2 and 3 1 and 3 2 alone 1 and 2 1, 2 and 3 1 and 3 2 alone ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3 - Φ, 4 pole, 50 Hz IM rotating at full load speed of 1440 rpm, calculate speed of rotor field with respect to rotor structure and stator structure respectively? 1440, 1500. 50, 1500. 60, 1440. 60, 1500. 1440, 1500. 50, 1500. 60, 1440. 60, 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above question, the output power delivered by generator G1 and G2 will be 6.3 kW, 9.3 kW. 9.6 kW, 12 kW. 9.3 kW, 9.3 kW. 5.7 kW, 8.7 kW. 6.3 kW, 9.3 kW. 9.6 kW, 12 kW. 9.3 kW, 9.3 kW. 5.7 kW, 8.7 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The following statements relate to compensating winding (CW) and interpole winding (IW) of a dc machine : 1. CW neutralizes the armature reaction under a pole pitch 2. IW is connected in series with armature circuit 3. IW produces mmf in the commutating zone only 4. CWmmf is directed along the brush axis 5. Mmf produced by IW is equal to armature mmf From these, the correct statements are 1, 3, 4, 5 1, 2, 3, 4 and 5 2, 3, 4 2, 3, 4, 5 1, 3, 4, 5 1, 2, 3, 4 and 5 2, 3, 4 2, 3, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
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