Electrical Machines A shunt generator has a critical field resistance of 300 Ω at a speed of 800 rpm if the speed is raised to 1000 rpm the critical field resistance is 145 Ω. 375 Ω. 150 Ω. 225 Ω. 145 Ω. 375 Ω. 150 Ω. 225 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? both 1 and 2 power factor of load magnitude of load current None of these both 1 and 2 power factor of load magnitude of load current None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 3 point starter 2 point starter 4 point starter All of these 3 point starter 2 point starter 4 point starter All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor requires 3 point starter? Shunt, compound and series motor. Shunt motor. Shunt motor as well as compound motors. Series motor. Shunt, compound and series motor. Shunt motor. Shunt motor as well as compound motors. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determined by Ampere's law. Fleming's left hand rule. Lenz's law. Fleming's right hand rule. Ampere's law. Fleming's left hand rule. Lenz's law. Fleming's right hand rule. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have higher efficiency. more breakdown torque. leading power factor. less breakdown torque. higher efficiency. more breakdown torque. leading power factor. less breakdown torque. ANSWER DOWNLOAD EXAMIANS APP
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