Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is 44 A. 40 A. 440 A. 400 A. 44 A. 40 A. 440 A. 400 A. 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? 60, 1440. 60, 1500. 1440, 1500. 50, 1500. 60, 1440. 60, 1500. 1440, 1500. 50, 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to reactance voltage. high resistance of carbon brushes. presence of commutator. armature reaction. reactance voltage. high resistance of carbon brushes. presence of commutator. armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC motors will have percentage increase of input current for the same percentage increase in torque? Shunt. Cummulative compound. Series. Differntical compound. Shunt. Cummulative compound. Series. Differntical compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has low ratings only? Shaded pole Resistance split phase Capacitor run Capacitor start Shaded pole Resistance split phase Capacitor run Capacitor start ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Flemings right hand rule. Lenzs law. Amperes law. Flemings left hand rule. Flemings right hand rule. Lenzs law. Amperes law. Flemings left hand rule. ANSWER DOWNLOAD EXAMIANS APP
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