Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.8. 0.6. 1. 0.4. 0.8. 0.6. 1. 0.4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to control the armature flux. demagnetize the field partially. control the field flux. limit the armature current. control the armature flux. demagnetize the field partially. control the field flux. limit the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature coil is short circuited by brushes when it lies in none of above positions. along field axis. along neutral axis. in any of above positions. in none of above positions. along field axis. along neutral axis. in any of above positions. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 4 V 0 V 1 V 2 V 4 V 0 V 1 V 2 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. damping torque. restoring torque. mechanical rotatory system. synchronizing power co efficient. damping torque. restoring torque. mechanical rotatory system. synchronizing power co efficient. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? Copper loss core loss only both 1 and 2 windage and friction loss Copper loss core loss only both 1 and 2 windage and friction loss ANSWER DOWNLOAD EXAMIANS APP
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