Electrical Machines Current in a coil undergoing commutation is not able to get reversed completely by the end of commutation period. It is due to armature emf. None of these coil resistance. reactance voltage induced in the coil. armature emf. None of these coil resistance. reactance voltage induced in the coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC 4 pole lap wound generator is running at 1000 rpm having 1200 conductors and flux density is 10 mwb. find the generated emf? 10V 100V 20V 200V 10V 100V 20V 200V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto-transformer, power is transferred through both A and B. conduction process only. induction process only. None of these both A and B. conduction process only. induction process only. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 3-phase induction motor operating in its stable region increases with increase in the load torque. decreases with decrease in the load torque. remains constant. decreases with increase in the load torque. increases with increase in the load torque. decreases with decrease in the load torque. remains constant. decreases with increase in the load torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to demagnetize the field partially. limit the armature current. control the armature flux. control the field flux. demagnetize the field partially. limit the armature current. control the armature flux. control the field flux. 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? Cummulative compound. Shunt. Series. Differntical compound. Cummulative compound. Shunt. Series. Differntical compound. ANSWER DOWNLOAD EXAMIANS APP
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