Electrical Machines The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence? All of these RBY BYR BRY All of these RBY BYR BRY ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 ,V 15 , kW 100 rpm shunt motor with armature resistance of 0.25 , W has a rated line current of 68 A and a rated field current of 2.2 A. The change in field flux required to obtain a speed of 1600 rpm while drawing a line current of 52.8 A and a field current of 1.8 A is 18.18% increase 36.36% increase 36.36% increase 36.36% decrease 18.18% increase 36.36% increase 36.36% increase 36.36% decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor can be reversed by transposing any two leads from supply. disconnecting any one phase. transposing any two leads from slip rings. transposing all the three leads from the supply. transposing any two leads from supply. disconnecting any one phase. transposing any two leads from slip rings. transposing all the three leads from the supply. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 4 pole IM is supplied from a 50 Hz source. Calculate rotor frequency when rotor runs 600 rpm? 20 Hz. Can be determined. 35 Hz. 30 Hz. 20 Hz. Can be determined. 35 Hz. 30 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to 45°. 30°. 75°. 0°. 45°. 30°. 75°. 0°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? Shunt. None of them. Compound. Series. Shunt. None of them. Compound. Series. ANSWER DOWNLOAD EXAMIANS APP
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